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Soybean

Binomial name
Glycine max
(L.) Merr.

Soybean(s) (U.S.) or Soya bean (UK) Glycine max is a species of legume, native to eastern Asia. It is an annual plant, which may vary in growth habit and height. It may grow prostrate, not growing above 20 cm (7.8 inches); up to stiffly erect plants growing to 2 meters (6.5 feet). The pods, stems, and leaves are covered with fine brown or gray pubescence. The leaves are trifoliate (sometimes with 5 leaflets), the leaflets 6-15 cm (2-6 inches) long and 2-7 cm (1-3 inches) broad; they fall before the seeds are mature. The small, inconspicuous, self-fertile flowers are borne in the axil of the leaf and are either white or purple; The fruit is a hairy pod that grow in clusters of 3-5, with each pod 3-8 cm (1-3 inches) long and usually containing 2-4 (rarely more) seeds 5-11 mm in diameter.

Like corn and some other crops of long domestication, the relationship of the modern soybean to wild-growing species can no longer be traced with any degree of certainty. It is a cultural variety (a cultigen) with a very large number of cultivars. However, it is known that the progenitor of the modern soybean was a vine-like plant, that grew prone on the ground.

Beans are classed as pulses whereas soybeans are classed as oilseeds. The word soy is derived from the Japanese word shoyu (soy sauce/soya sauce).

Physical characteristics

Soybeans occur in various sizes, and in several hull or seed coat colors, including black, brown, blue, yellow, and mottled. The hull of the mature bean is hard, water resistant, and protects the cotyledon and hypocotyl (or "germ") from damage. The scar, visible on the seed coat, is called the hilum (colors include black, brown, buff, gray and yellow) and at one end of the hilum is the micropyle, or small opening in the seed coat which can allow the absorption of water.

Cultivation

Soybeans are an important global crop, with political ramifications. It is grown for its oil and protein. The bulk of the crop is solvent extracted for vegetable oil and the defatted soy meal is used for animal feed. A very small proportion of the crop is consumed directly for food by humans.

Soybeans were used as food in eastern Asia long before written records, and it is still a major crop in China, Japan and Korea. They were first introduced to Europe in the early 1700s and the United States in 1765, where it was first grown for hay. Benjamin Franklin wrote a letter in 1770 mentioning sending soybeans home from England. Soybeans did not become an important crop outside of Asia until about 1910.

Cultivation is successful in climates with hot summers, with optimum growing conditions in mean temperatures of 20 °C to 30 °C; temperatures of below 20 °C and over 40 °C retard growth significantly. They can grow in a wide range of soils, with optimum growth in moist alluvial soils with a good organic content. Soybeans, like most legumes perform nitrogen fixation by establishing a symbiotic relationship with the bacterium Bradyrhizobium japonicum (syn. Rhizobium japonicum; Jordan 1982). However, for best results an inoculum of the correct strain of bacteria should be mixed with the soybean(or any legume) seed before planting. Modern crop cultivars generally reach a height of 1 m or more, and take between 80-120 days from sowing to harvesting.

Varieties of soybeans are used for many purposes.

Soybeans are native to southeast Asia, but 45 percent of the world's soybean area, and 55 percent of production, is in the United States. The U.S. produced 75 million metric tons of soybeans in 2000, of which more than one-third was exported. Other leading producers are Brazil, Argentina, China, Japan, and India.

Environmental groups, such as Greenpeace and the WWF, have reported that soybean cultivation and the threat to increase soybean cultivation in Brazil is destroying huge areas of Amazon rainforest and encouraging deforestation.

The first research on soybeans in the United States was conducted by George Washington Carver at Tuskeegee, Alabama, but he decided it was too exotic a crop for the poor black farmers of the South so he turned his attention to peanuts. He also encouraged farmers to use crop rotation. Peanuts, soybeans, sweet potatoes or other plants that would replenish the soil with nitrogen and minerals were planted for two years and then cotton on the third year.

Uses

Soybeans can be broadly classified as "vegetable" (garden) or field (oil) types. Vegetable types cook more easily, have a mild nutty flavor, better texture, are larger in size, higher in protein, and lower in oil than field types. Tofu and soymilk producers prefer the higher protein cultivars bred from vegetable soybeans originally brought to the United States in the late 1930s. The "garden" cultivars are generally not suitable for mechanical combine harvesting because they have a tendency for the pods to shatter on reaching maturity.

Among the legumes, the soybean, also classed as an oilseed, is pre-eminent for its high (38-45%) protein content as well as its high (20%) oil content. Soybeans are the most important cash crop in the United States and the leading agricultural export. The bulk of the soybean crop is grown for oil production, with the high-protein defatted and "toasted" soy meal used as livestock feed. A smaller percentage of soybeans are used directly for human consumption, particularly in Asia.

Soybeans may be boiled whole in their green pod and served with salt, under the Japanese name edamame. Soybeans prepared this way are a popular local snack in Hawai'i, where, as in Japan, China, and Korea, the bean and products made from the bean (miso, natto, tofu, douchi, doenjang, ganjang and others) are a significant part of the diet.

The beans can be processed in a variety of ways. Common forms of soy (or soya) include soy meal ( used as animal feed), soy flour, "soy milk", tofu, textured vegetable protein (TVP, which is made into a wide variety of vegetarian foods, some of them intended to imitate meat), tempeh, soy lecithin and soybean oil (aka "vegetable oil" in the USA). Soybeans are also the primary ingredient involved in the production of soy sauce (or shoyu).

Soybeans grow throughout Asia and North and South America.

Oil

In processing soybeans for oil extraction and subsequent soy flour production, selection of high quality, sound, clean, dehulled yellow soybeans is very important. Soybeans having a dark colored seed coat, or even beans with a dark hilum will inadvertently leave dark specks in the flour, an undesirable factor when used in food products. All commercial soybeans in the United States are yellow or yellow brown.

Soybean oil makes up 80% of the edible oil consumption in the United States. Soybean oil extraction is performed on a large scale in the U.S. The soybeans are cracked, adjusted for moisture content, rolled into flakes and solvent extracted with commercial hexane. The oils are blended for their applications, and sometimes hydrogenated. The oils are exported abroad, sold as vegetable oil, or end up in a wide variety of processed foods. New processes increasingly prepare protein isolates for use as food additives or health supplements. The remaining soybean husks are used mainly as animal feed.

Meal

Soybean meal, the material remaining after solvent extraction of soybean flakes, with a 50% soy protein content, toasted (a misnomer because the heat treatment is with moist steam), and ground, in a hammer mill, provided the energy for the American revolution, beginning in the 1930s, of growing farm animals such as poultry and swine on an industrial scale; and more recently the aquaculture of catfish.

Flour

Soy flour refers to defatted soybeans where special care was taken during desolventizing (not toasted) in order to minimize denaturation of the protein to retain a high Nitrogen Solubility Index (NSI), for uses such as extruder texturizing (TVP). It is the starting material for production of soy concentrate and soy protein isolate.

Infant formula

Infant formulas based on soy are used by lactose-intolerant babies; and for babies that are allergic to human milk proteins and cow milk proteins. The formulas are sold in powdered, ready to feed, or concentrated liquid forms.

Substitute for existing products

Many traditional dairy products have been imitated using processed soybeans, and imitation products such as soy milk, "soy yogurt" and "soy cream cheese" are readily available in most supermarkets. These imitation products are derived from extensive processing to produce a texture and appearance similar to the real dairy-based ones. Soy milk does not contain significant amounts of calcium, since the high calcium content of soybeans is bound to the insoluble constituents and remains in the pulp. Many manufacturers of soy milk now sell calcium-enriched products as well. Tofu often contains high amounts of this important mineral since calcium salts are used to coagulate the protein in soy milk when creating tofu. Additionally, soy protein has been found to reduce renal excretion of calcium, an effect that is reinforced by the high potassium content of soy products.

Other products

Soybeans are also used in industrial products including oils, soap, cosmetics, resins, plastics, inks, crayons, solvents, and biodiesel. Soybeans are also used as fermenting stock to make a brand of vodka.

Genetic modification

Soybeans are one of the "Biotech Food" crops that are being genetically modified, and GMO soybeans are being used in an increasing number of products. Monsanto is the world's leader in genetically modified soy for the commercial market. In 1995, Monsanto introduced "Roundup Ready" (RR) soybeans that have had a complete copy of a gene (plasmid) from the bacteria, Agrobacterium sp. strain CP4, inserted, by means of a gene gun, into its genome that allows the transgenic plant to survive being sprayed by this non-selective, glyphosate-based herbicide. Roundup kills conventional soybeans. RR soybeans allow a farmer to reduce tillage or even to sow the seed directly into an unplowed field, known as 'No Plow' tillage.

Currently, 80% of all soybeans cultivated for the commercial market are genetically modified. As with other "Roundup Ready" crops, concern is expressed over damage to biodiversity through the loss of wildflowers removed by the roundup treatment, and consequent loss of insects and birds that depend on them. Concern is also for the high amounts of residual toxin since the herbicide is sprayed on the soya crop repeatedly during growth.

Nutrition

Protein

Soybeans are a source of complete protein. A complete protein is one that contains significant amounts of all the essential amino acids that must be provided to the human body because of the body's inability to synthesize them. For this reason, soy is important to many vegetarians and vegans. Soy protein is similar to that of other legume seeds, but has the highest yield per square meter of growing area, and is the least expensive source of dietary protein. The only non-legume to have an almost identical protein profile to soy is the cereal oat (Avena sativa), and perhaps quinoa.

Vitamins and Minerals

Toasted soybeans

Of any studied legume, whole soybeans have the highest levels of phytic acid, an organic acid and mineral chelator present in many plant tissues, especially bran and seeds, which binds to certain ingested minerals: calcium, magnesium, iron, and especially zinc—in the intestinal tract, and reduces the amount the body assimilates. For people with a particularly low intake of essential minerals, especially young children and those in developing countries, this effect can be undesirable. However, dietary mineral chelators help prevent over-mineralization of joints, blood vessels, and other parts of the body, which is most common in older persons. The Journal of Environmental Nutrition (April 2004 volume 27 issue 4) has also stated phytic acid may be considered a phytonutrient, providing an antioxidant effect. Scientific research [1] also indicates that it may reduce the risk of colon cancer. In spite of the chelating effects of phytic acid, soybeans remain a good source of magnesium, potassium, phosphorus, calcium, and manganese. They are also high in fiber and vitamin C.

Health

Isoflavones

Soybeans also contain isoflavones, forms of phytoestrogen that are considered by some nutritionists and physicians to be useful in the prevention of cancer, though very controversial and also blamed for some thyroid and reproductive health problems. Isoflavones are polyphenol compounds, produced primarily by beans and other legumes, including peanuts and chickpeas.

Reduce cholesterol

In 1995, the New England Journal of Medicine (Vol. 333, No. 5) published a report from the University of Kentucky entitled, "Meta-Analysis of the Effects of Soy Protein Intake on Serum Lipids." It was financed by the PTI division of DuPont,"The Solae Co."[2] St. Louis. This meta-analysis concluded that soy protein is correlated with significant decreases in serum cholesterol, Low Density Lipoprotein LDL (bad cholesterol) and triglyceride concentrations. However, High Density Lipoprotein HDL(good cholesterol) did not increase. Soy phytoestrogens (isoflavones: genistein and daidzein) adsorbed onto the soy protein were suggested as the agent reducing serum cholesterol levels. On the basis of this research PTI, in 1998, filed a petition with FDA for a health claim that soy protein may reduce cholesterol and the risk of heart disease.

The FDA granted this health claim for soy: "25 grams of soy protein a day, as part of a diet low in saturated fat and cholesterol, may reduce the risk of heart disease." One serving, (1 cup or 240 mL) of soy milk, for instance, contains 6 or 7 grams of soy protein.

In January , 2006 an American Heart Association review (in the journal Circulation) of a decade long study of soy protein benefits casts doubt on the FDA allowed "Heart Healthy" claim for soy protein. The panel also found that soy isoflavones do not reduce post menopause "hot flashes" in women nor do isoflavones help prevent cancers of the breast, uterus or prostate. [3]

The original paper in the journal Circulation: January 17,2006[4]

Cancer

A 1985 animal study showed that young rats fed large amounts of soy products as their primary food source showed an increased risk of pancreatic cancer. This is probably because rats are extremely sensitive to dietary protease inhibitors like those found in soybeans, which can disrupt the action of digestive enzymes needed to break down protein. This condition has not been found in many other animals, and is not known to occur in humans.


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This condition has not been found in many other animals, and is not known to occur in humans. This, however, did not prevent the many Bionicle users from continuing to use the disputed words, resulting in the popular Bionicle website BZPower coming under a denial-of-service attack for four days by an attacker using the name Kotiate [1]. This is probably because rats are extremely sensitive to dietary protease inhibitors like those found in soybeans, which can disrupt the action of digestive enzymes needed to break down protein. Initially LEGO refused to withdraw the game, saying the names it used were drawn from many cultures, but later agreed that it had taken the names from Māori and agreed to change certain names or spellings to help set the toy line apart from the Māori legends. A 1985 animal study showed that young rats fed large amounts of soy products as their primary food source showed an increased risk of pancreatic cancer. The dispute was settled amicably. The original paper in the journal Circulation: January 17,2006[4]. The product line used many words that were an appropriation of Māori language, imagery and folklore.

[3]. In 2001 a dispute arose between Danish toymaker LEGO and several Māori tribal groups fronted by lawyer Maui Solomon, and also several members of an online discussion forum Aotearoa Cafe, over the popular LEGO toy line Bionicle. The panel also found that soy isoflavones do not reduce post menopause "hot flashes" in women nor do isoflavones help prevent cancers of the breast, uterus or prostate. Despite significant social and economic advances during the 20th century, Māori still perform negatively in most health and education statistics, labour participation as well as being over-represented in criminal and corrections statistics. In January , 2006 an American Heart Association review (in the journal Circulation) of a decade long study of soy protein benefits casts doubt on the FDA allowed "Heart Healthy" claim for soy protein. Māori politicians have seven designated Māori seats in the New Zealand parliament (and may stand in the General seats), and consideration and consultation with Māori are routine requirements for many New Zealand councils and government organisations. The FDA granted this health claim for soy: "25 grams of soy protein a day, as part of a diet low in saturated fat and cholesterol, may reduce the risk of heart disease." One serving, (1 cup or 240 mL) of soy milk, for instance, contains 6 or 7 grams of soy protein. Māori language has the equivalent status to English in government and law.

On the basis of this research PTI, in 1998, filed a petition with FDA for a health claim that soy protein may reduce cholesterol and the risk of heart disease. Māori Television, a government-funded TV station committed to broadcasting primarily in te reo, began broadcasting on March 28, 2004. Soy phytoestrogens (isoflavones: genistein and daidzein) adsorbed onto the soy protein were suggested as the agent reducing serum cholesterol levels. Māori culture and language is taught in most New Zealand schools, and pre-school kohanga reo or language nests, teach tamariki or young children exclusively in Māori. However, High Density Lipoprotein HDL(good cholesterol) did not increase. Generous state funding is assisting with the revival attempt. This meta-analysis concluded that soy protein is correlated with significant decreases in serum cholesterol, Low Density Lipoprotein LDL (bad cholesterol) and triglyceride concentrations. In many areas of New Zealand, Māori language ceased to be used as a living community language (by significant numbers of people) in the post-war years.

Louis. As a result of the compensation paid, Māori now have significant interests in the fishing and forestry industries. 5) published a report from the University of Kentucky entitled, "Meta-Analysis of the Effects of Soy Protein Intake on Serum Lipids." It was financed by the PTI division of DuPont,"The Solae Co."[2] St. A special court, the Waitangi Tribunal, was established to investigate and make recommendations on such issues. 333, No. Sympathetic governments and political activism have led to compensation for certain historic instances of unjust confiscation of land and the violation of other property rights. In 1995, the New England Journal of Medicine (Vol. Others seek to develop a New Zealand identity that incorporates strands of Māori identity.

Isoflavones are polyphenol compounds, produced primarily by beans and other legumes, including peanuts and chickpeas. Some commentators express frustration with the "theme-parkisation" of Māori identity with tourist-driven performances and gift shop "art". Soybeans also contain isoflavones, forms of phytoestrogen that are considered by some nutritionists and physicians to be useful in the prevention of cancer, though very controversial and also blamed for some thyroid and reproductive health problems. No Māori live a traditional pre-European contact lifestyle today. They are also high in fiber and vitamin C. Despite a high degree of intermingling between the Māori and European populations, Māori were able to retain their cultural identity and in the 1960s and 1970s, Māoridom underwent a cultural revival. In spite of the chelating effects of phytic acid, soybeans remain a good source of magnesium, potassium, phosphorus, calcium, and manganese. The predicted decline did not occur, and population levels recovered.

Scientific research [1] also indicates that it may reduce the risk of colon cancer. With the loss of much of their land, Māori went into a period of decline, and by the late 19th century it was believed that the Māori population would cease to exist as a separate race and be assimilated into the European population. The Journal of Environmental Nutrition (April 2004 volume 27 issue 4) has also stated phytic acid may be considered a phytonutrient, providing an antioxidant effect. Settlements such as Parihaka in Taranaki are remembered as sites of violent conflict that took place there during that period. However, dietary mineral chelators help prevent over-mineralization of joints, blood vessels, and other parts of the body, which is most common in older persons. Although these resulted in relatively few deaths, large tracts of tribal land were confiscated by the colonial government. For people with a particularly low intake of essential minerals, especially young children and those in developing countries, this effect can be undesirable. In the 1860s, disputes over questionable land purchases and the attempts of Māori in the Waikato to establish a rival British-style system of royalty led to the New Zealand wars.

Of any studied legume, whole soybeans have the highest levels of phytic acid, an organic acid and mineral chelator present in many plant tissues, especially bran and seeds, which binds to certain ingested minerals: calcium, magnesium, iron, and especially zinc—in the intestinal tract, and reduces the amount the body assimilates. The treaty made the Māori British subjects in return for a guarantee of property rights and tribal autonomy. The only non-legume to have an almost identical protein profile to soy is the cereal oat (Avena sativa), and perhaps quinoa. This treaty was subsequently signed by many other Māori chiefs, though by no means all. Soy protein is similar to that of other legume seeds, but has the highest yield per square meter of growing area, and is the least expensive source of dietary protein. On arrival in February, Hobson negotiated the Treaty of Waitangi with the surrounding northern chiefs. For this reason, soy is important to many vegetarians and vegans. Before he arrived, Queen Victoria annexed new Zealand by royal proclamation in January 1840.

A complete protein is one that contains significant amounts of all the essential amino acids that must be provided to the human body because of the body's inability to synthesize them. Ultimately this led to William Hobson being dispatched with instructions to take possession of New Zealand. Soybeans are a source of complete protein. With increasing European missionary activity and settlement in the 1830s as well as perceived European lawlessness, the British Crown, as a predominant world power, came under pressure to intervene. Concern is also for the high amounts of residual toxin since the herbicide is sprayed on the soya crop repeatedly during growth. Estimates vary between ten and fifty percent. As with other "Roundup Ready" crops, concern is expressed over damage to biodiversity through the loss of wildflowers removed by the roundup treatment, and consequent loss of insects and birds that depend on them. European diseases also killed a large but unknown number of Māori during this period.

Currently, 80% of all soybeans cultivated for the commercial market are genetically modified. During this period the acquisition of muskets by those tribes in close contact with European visitors destabilised the existing balance of power between Māori tribes, and there was a period of bloody inter-tribal warfare, known as the Musket Wars, during which several tribes were effectively exterminated and others were driven from their traditional territory. RR soybeans allow a farmer to reduce tillage or even to sow the seed directly into an unplowed field, known as 'No Plow' tillage. Frederick Edward Maning, an early settler, wrote two colourful contemporaneous accounts of life at that time which have become classics of New Zealand literature: Old New Zealand and History of the War in the North of New Zealand against the Chief Heke. Governor George Grey learned the language and recorded much of the mythology. Roundup kills conventional soybeans. When Pomare led a war party against Titore in 1838, among his warriors were 132 Pakeha mercenaries. strain CP4, inserted, by means of a gene gun, into its genome that allows the transgenic plant to survive being sprayed by this non-selective, glyphosate-based herbicide. These Europeans were known as Pakeha Māori.

In 1995, Monsanto introduced "Roundup Ready" (RR) soybeans that have had a complete copy of a gene (plasmid) from the bacteria, Agrobacterium sp. Pakeha were valued for their ability to describe European skills and culture and their ability to obtain European items in trade, particularly weaponry. Monsanto is the world's leader in genetically modified soy for the commercial market. By 1830 it was estimated that there were as many as 2,000 Pakeha living among the Māori, status varying from slaves through to high ranking advisors, from prisoners to those who abandoned European culture and identified themselves as Māori. Soybeans are one of the "Biotech Food" crops that are being genetically modified, and GMO soybeans are being used in an increasing number of products. There was also a continuous trickle of escaped convicts from Australia and deserters from visiting ships. Soybeans are also used as fermenting stock to make a brand of vodka. From as early as the 1780s Māori had encounters with European sealers and whalers; some even crewed on their ships.

Soybeans are also used in industrial products including oils, soap, cosmetics, resins, plastics, inks, crayons, solvents, and biodiesel. Inter-tribal warfare was a way of life, with the conquered being enslaved or in some cases eaten. Additionally, soy protein has been found to reduce renal excretion of calcium, an effect that is reinforced by the high potassium content of soy products. These early reports described the Māori as a fierce and proud warrior race. Tofu often contains high amounts of this important mineral since calcium salts are used to coagulate the protein in soy milk when creating tofu. The early European explorers, including Abel Tasman and James Cook, reported encounters with Māori. Many manufacturers of soy milk now sell calcium-enriched products as well. European colonisation of New Zealand occurred relatively recently, causing the late New Zealand historian Michael King to state in his book, The Penguin History Of New Zealand, that Māori were "the last major human community on earth untouched and unaffected by the wider world.".

Soy milk does not contain significant amounts of calcium, since the high calcium content of soybeans is bound to the insoluble constituents and remains in the pulp. In recent years, there has been a resurgence in the practice of tattooing for both men and women, as a sign of cultural identity and a reflection of the general revival of the language and culture; members of kapa haka (concert parties) often apply temporary markings to their faces to give an approximation of a tattooed appearance. These imitation products are derived from extensive processing to produce a texture and appearance similar to the real dairy-based ones. Simmons also mentions that the use of the painful traditional tattooing implements began to be abandoned in favour of grouped metal needles starting from about 1910 (ibid). Many traditional dairy products have been imitated using processed soybeans, and imitation products such as soy milk, "soy yogurt" and "soy cream cheese" are readily available in most supermarkets. Women were not as extensively tattooed: with some exceptions, only their lips and chin were decorated. The formulas are sold in powdered, ready to feed, or concentrated liquid forms. It was an extremely long and painful process, and often leaves from the karaka tree were placed over the swollen incisions to hasten the healing process.

Infant formulas based on soy are used by lactose-intolerant babies; and for babies that are allergic to human milk proteins and cow milk proteins. Next, the chisel was dipped into a sooty pigment such as burnt kauri gum which was then smeared into the skin. It is the starting material for production of soy concentrate and soy protein isolate. The first stage of the tattoo started with the carving of deep grooves into the skin (see Simmons 1997:19). Soy flour refers to defatted soybeans where special care was taken during desolventizing (not toasted) in order to minimize denaturation of the protein to retain a high Nitrogen Solubility Index (NSI), for uses such as extruder texturizing (TVP). The instrument used to tattoo in former times (up to 1925) was a bone chisel with an extremely sharp edge. Soybean meal, the material remaining after solvent extraction of soybean flakes, with a 50% soy protein content, toasted (a misnomer because the heat treatment is with moist steam), and ground, in a hammer mill, provided the energy for the American revolution, beginning in the 1930s, of growing farm animals such as poultry and swine on an industrial scale; and more recently the aquaculture of catfish. Apart from signalling status and rank, another reason for the practice in traditional times was to make a person more attractive to the opposite sex.

The remaining soybean husks are used mainly as animal feed. According to Simmons, in both men and women, the patterns used were highly significant of a person's rank, skills, knowledge, personal life history, tribal affilations and genealogy; in contrast Buck (1974:298) thought that because tā moko experts travelled widely to carry out their art the designs would have related more to the tribal affiliations of the tattooist rather than those of the tattooed. New processes increasingly prepare protein isolates for use as food additives or health supplements. The receiving of tattoos constituted an important milestone on a person's journey to maturity and was accompanied by many rites and rituals. The oils are exported abroad, sold as vegetable oil, or end up in a wide variety of processed foods. It is thought that in traditional society many or most high-ranking persons were tattooed, and those who went without tattoos were seen as persons of lower social status; although Simmons (1997), cited below, contains references throughout to servants who were tattooed with patterns that signalled that they were the slave of a high ranking chief. The oils are blended for their applications, and sometimes hydrogenated. As a cultural practice tattooing (tā moko) was brought by the Māori from their Eastern Polynesian homeland, and the implements and methods employed were similar to those used in other parts of Polynesia (see Buck 1974:296, cited in References below).

The soybeans are cracked, adjusted for moisture content, rolled into flakes and solvent extracted with commercial hexane. These trends have contributed towards a worldwide interest in traditional Māori culture and arts. Soybean oil extraction is performed on a large scale in the U.S. Several actors who have recently appeared in high-profile movies filmed in New Zealand have come back wearing such jewellery, including Viggo Mortensen of The Lord of the Rings fame, took to wearing a hei matau around his neck. Soybean oil makes up 80% of the edible oil consumption in the United States. These collectives have begun creating and exporting jewellery (such as bone carved hei matau pendants and greenstone jewellery) and other artistic items (such as wood carvings and textiles). All commercial soybeans in the United States are yellow or yellow brown. Several artistic collectives have been established by Māori tribal groups.

Soybeans having a dark colored seed coat, or even beans with a dark hilum will inadvertently leave dark specks in the flour, an undesirable factor when used in food products. For many Māori the wearing of such items relates to cultural identity; however, they are also popular with young New Zealanders of all races. In processing soybeans for oil extraction and subsequent soy flour production, selection of high quality, sound, clean, dehulled yellow soybeans is very important. Other taonga (treasured possessions) used as items of personal adornment include bone carvings in the form of neck ornaments, earrings or necklaces. Soybeans are also the primary ingredient involved in the production of soy sauce (or shoyu). After laborious and lengthy polishing, the completed pendant is suspended by a plaited cord and secured by a loop and toggle. Common forms of soy (or soya) include soy meal ( used as animal feed), soy flour, "soy milk", tofu, textured vegetable protein (TVP, which is made into a wide variety of vegetarian foods, some of them intended to imitate meat), tempeh, soy lecithin and soybean oil (aka "vegetable oil" in the USA). Creating a hei-tiki with traditional methods is a long, arduous process during which the stone is smoothed by abrasive rubbing; finally, using sticks and water, it is slowly shaped and the holes bored out.

The beans can be processed in a variety of ways. The tilted head of the pitau variety of hei-tiki derives from the properties of the stone - its hardness and great value make it important to minimise the amount of the stone that has to be removed. Soybeans prepared this way are a popular local snack in Hawai'i, where, as in Japan, China, and Korea, the bean and products made from the bean (miso, natto, tofu, douchi, doenjang, ganjang and others) are a significant part of the diet. From the size and style of traditional examples of hei-tiki it is likely that the stone was first cut in the form of a small adze. Soybeans may be boiled whole in their green pod and served with salt, under the Japanese name edamame. Named varieties include translucent green kahurangi, whitish inanga, semi-transparent kawakawa, and tangiwai or bowenite. A smaller percentage of soybeans are used directly for human consumption, particularly in Asia. Pounamu is esteemed highly by Māori for its beauty, toughness and great hardness; it is used not only for ornaments such as hei-tiki and ear pendants, but also for carving tools, adzes, and weapons.

The bulk of the soybean crop is grown for oil production, with the high-protein defatted and "toasted" soy meal used as livestock feed. New Zealand greenstone consists of either nephrite (a type of jade, in Māori: pounamu) or bowenite (Māori: tangiwai). Soybeans are the most important cash crop in the United States and the leading agricultural export. The most valuable hei-tiki are carved from greenstone or pounamu. Among the legumes, the soybean, also classed as an oilseed, is pre-eminent for its high (38-45%) protein content as well as its high (20%) oil content. Another less romantic theory holds that it served merely for personal adornment. The "garden" cultivars are generally not suitable for mechanical combine harvesting because they have a tendency for the pods to shatter on reaching maturity. One theory of the origin of the hei-tiki suggests a connection with Tiki, the god who created human life, in which case the hei-tiki is a symbol of fertility.

Tofu and soymilk producers prefer the higher protein cultivars bred from vegetable soybeans originally brought to the United States in the late 1930s. The hei-tiki, a small ornamental pendant usually made of pounamu and worn around the neck, is often incorrectly referred to as a tiki, a term that actually refers to large human figures carved in wood, and, also, the small wooden carvings used to mark sacred places. Vegetable types cook more easily, have a mild nutty flavor, better texture, are larger in size, higher in protein, and lower in oil than field types. The New Zealand national rugby team, the All Blacks, perform a haka before international matches not only as a reflection of the importance of the game that is about to be played but also to motivate themselves and their supporters to greater efforts; indirectly then, as in days of old on the Māori battlefield, they are paying a compliment to the perceived skills of their opponents. Soybeans can be broadly classified as "vegetable" (garden) or field (oil) types. In today's environment however, haka are often performed as a mark of respect for distinguished visitors, or to express a sense of the importance of an occasion. Peanuts, soybeans, sweet potatoes or other plants that would replenish the soil with nitrogen and minerals were planted for two years and then cotton on the third year. The aim of the warriors was to kill all the members of the enemy war party, so that no survivors would remain to undertake revenge.

He also encouraged farmers to use crop rotation. Often, warriors went naked into battle, apart from a plaited flax belt around the waist. The first research on soybeans in the United States was conducted by George Washington Carver at Tuskeegee, Alabama, but he decided it was too exotic a crop for the poor black farmers of the South so he turned his attention to peanuts. If the haka was not performed in total unison, this was regarded as an bad omen for the battle. Environmental groups, such as Greenpeace and the WWF, have reported that soybean cultivation and the threat to increase soybean cultivation in Brazil is destroying huge areas of Amazon rainforest and encouraging deforestation. It involved fierce facial expressions and grimaces, poking out of the tongue, eye bulging, grunts and cries, and the waving of weapons. Other leading producers are Brazil, Argentina, China, Japan, and India. Its purpose was to invoke the god of war and to warn enemies of the fate awaiting them.

produced 75 million metric tons of soybeans in 2000, of which more than one-third was exported. In former times, the peruperu was performed before a battle. The U.S. There are various types of war haka - one performed without weapons, usually to express public or private feelings, is known as the "haka taparahi"; another, the peruperu, is performed with weapons. Soybeans are native to southeast Asia, but 45 percent of the world's soybean area, and 55 percent of production, is in the United States. There are haka of song and joy, and warlike haka. Modern crop cultivars generally reach a height of 1 m or more, and take between 80-120 days from sowing to harvesting. A number of different types of haka are performed depending on the occasion.

However, for best results an inoculum of the correct strain of bacteria should be mixed with the soybean(or any legume) seed before planting. The haka is just one of many kinds of group dance or performance. Rhizobium japonicum; Jordan 1982). Today, tapu is still observed in matters relating to sickness, death, and burial. Soybeans, like most legumes perform nitrogen fixation by establishing a symbiotic relationship with the bacterium Bradyrhizobium japonicum (syn. In pre-contact society, tapu was one of the strongest forces in Māori life; however in the early 1800s, Māori enthusiastically embraced Christianity and its concepts and adapted them to their culture. They can grow in a wide range of soils, with optimum growth in moist alluvial soils with a good organic content. Burial grounds and places of death were always tapu, and these areas were often surrounded by a protective fence.

Cultivation is successful in climates with hot summers, with optimum growing conditions in mean temperatures of 20 °C to 30 °C; temperatures of below 20 °C and over 40 °C retard growth significantly. Not only were the houses of people of high rank perceived to be tapu, but also their possessions including their clothing. Soybeans did not become an important crop outside of Asia until about 1910. A chief's house was tapu, and even the chief could not eat food in the interior of his house. Benjamin Franklin wrote a letter in 1770 mentioning sending soybeans home from England. In earlier times food cooked for a person of high rank was tapu, and could not be eaten by an inferior. They were first introduced to Europe in the early 1700s and the United States in 1765, where it was first grown for hay. A violation of tapu could have dire consequences, including the death of the offender through sickness or at the hands of someone affected by the offence.

Soybeans were used as food in eastern Asia long before written records, and it is still a major crop in China, Japan and Korea. Death was the penalty. A very small proportion of the crop is consumed directly for food by humans. This was considered "pollution" and persons of a lower rank could not touch the belongings of a highborn person. The bulk of the crop is solvent extracted for vegetable oil and the defatted soy meal is used for animal feed. In earlier times, tribal members of a higher rank would not touch objects which belonged to members of a lower rank. It is grown for its oil and protein. A person, object or a place could be made sacred by tapu for a certain time.

Soybeans are an important global crop, with political ramifications. A person, an object or a place, which is tapu, may not be touched by human contact, in some cases, not even approached. The scar, visible on the seed coat, is called the hilum (colors include black, brown, buff, gray and yellow) and at one end of the hilum is the micropyle, or small opening in the seed coat which can allow the absorption of water. There are two kinds of tapu, the private (relating to individuals) and the public tapu (relating to communities). The hull of the mature bean is hard, water resistant, and protects the cotyledon and hypocotyl (or "germ") from damage. Tapu can be interpreted as "sacred", as "spiritual restriction" or "implied prohibition"; it involves rules and prohibitions. Soybeans occur in various sizes, and in several hull or seed coat colors, including black, brown, blue, yellow, and mottled. According to some, the supreme god of the Māori is Io; however this idea is controversial.

. Tane is the god of the forest and the origin of all birds, and Rongo is the god of peaceful activities and agriculture. The word soy is derived from the Japanese word shoyu (soy sauce/soya sauce). In accordance with the Polynesian tradition, Tangaroa is god of the ocean and the origin of all fish. Beans are classed as pulses whereas soybeans are classed as oilseeds. Certain people and objects contain mana - spiritual power or essence. However, it is known that the progenitor of the modern soybean was a vine-like plant, that grew prone on the ground. Māori religion is closely related to nature and to the ancestors, and all things are conceived of as possessing a life force or mauri, since all living things are connected by a common descent through whakapapa or genealogy.

It is a cultural variety (a cultigen) with a very large number of cultivars. Oratory, the making of speeches, is especially important in the rituals of encounter, and it is regarded as important for a speaker to include allusions to traditional narrative and to a complex system of proverbial sayings, called whakataukī. Like corn and some other crops of long domestication, the relationship of the modern soybean to wild-growing species can no longer be traced with any degree of certainty. The history of individual tribal groups is kept by means of narratives, songs and chants, hence the importance of music, story and poetry. The small, inconspicuous, self-fertile flowers are borne in the axil of the leaf and are either white or purple; The fruit is a hairy pod that grow in clusters of 3-5, with each pod 3-8 cm (1-3 inches) long and usually containing 2-4 (rarely more) seeds 5-11 mm in diameter. Finally, soil is heaped over the hāngi to keep the heat in. The leaves are trifoliate (sometimes with 5 leaflets), the leaflets 6-15 cm (2-6 inches) long and 2-7 cm (1-3 inches) broad; they fall before the seeds are mature. The hāngi is then covered with leaves or mats woven out of flax (or wet sacks) and left to cook.

The pods, stems, and leaves are covered with fine brown or gray pubescence. The food is placed on top of the stones, the meat first, with the vegetables, such as kumara and potatoes, on top of it. It may grow prostrate, not growing above 20 cm (7.8 inches); up to stiffly erect plants growing to 2 meters (6.5 feet). When the stones are hot the hāngi is prepared for cooking by leaving the hot stones and some of the coals at the bottom of the hole. It is an annual plant, which may vary in growth habit and height. A fire is prepared in the hole and stones are placed on the top of it. Soybean(s) (U.S.) or Soya bean (UK) Glycine max is a species of legume, native to eastern Asia. The hāngi consists of a shallow hole dug in the ground.

The lecithin content varies up to 15%. Although marae have modern cooking facilities, the hāngi, a traditional way of cooking food in Polynesia, is still used to provide meals for large groups because the food it produces is considered flavourful. Lecithinated soy flour, is made by adding soybean lecithin to defatted, low fat or high fat soy flours to increase their dispersibility and impart emulsifying properties. When Māori refer to themselves as tāngata whenua this is not done solely to emphasise their indigenous status, as is often assumed, because the connotation in Māori of the phrase is one not of separation but rather of welcome and inclusion. High fat soy flour, is produced by adding back soybean oil to defatted flour, at the level of 15%. Should other groups of manuhiri arrive, the manuhiri who arrived previously - regardless of their race - are considered tāngata whenua for the purposes of formally welcoming the new group. The lipid content varies according to specifications, usually between 4.5% and 9%. Should a group of people come to stay on a marae, they are considered manuhiri (guests) while the owners of the marae are known as tāngata whenua.

Low fat soy flour, is made by adding back some oil to defatted soy flour. This is when the phrase tāngata whenua (people of the land) comes into play. Due to its high oil content a specialized Alpine Fine Impact Mill must be used for grinding rather than the more common hammermill. Locals and visitors have to respect certain rules, especially during the rituals of encounter. Full-fat soy flour, is made from unextracted, dehulled beans, and contains about 18% to 20% oil. The older people have the authority on the marae, and they impart to the young people traditions and cultural practices including legends, songs or the arts of weaving or carving. Defatted soy flour, is obtained from solvent extracted flakes, and contains less than 1% oil. On the marae official functions take place including formal welcomes, celebrations, weddings, christenings, tribal reunions, and tangihanga (funerals).

The marae symbolises group unity and generally consists of an open grassed area in front of a large carved meeting house, along with a dining hall and other facilities necessary to provide a comfortable stay for visiting groups. The marae is a communal ceremonial centre where meetings and ceremonies take place in accordance with traditional protocols. The people also wore highly decorative personal ornaments, and people of rank were often extensively tattooed. Art was and is a prominent part of the culture as seen in the carving of houses, canoes, weapons, and other items.

Main tasks were separated for men and women, but there were also a lot of group activities involving food gathering & food cultivation, and warfare. Seasonal activities included gardening, fishing and the hunting of birds. The harakeke (flax plant) served as a replacement for coconut fronds and hibiscus fibre in the manufacture of mats, baskets, rope, fishing nets and clothing. Great ingenuity was required to grow the tropical plants they had brought with them from Polynesia, including taro, kumara, gourds, and yams; this was especially difficult in the chillier southern parts of the country.

After arriving in New Zealand, Māori had to rapidly adapt their material culture and agricultural practices to suit the climate of their new land, cold and harsh in comparison to tropical island Polynesia. The East Polynesian ancestors of the Māori were hunters, fishermen and gardeners. There is no credible evidence of human settlement in New Zealand prior to the Māori voyagers; on the other hand, compelling evidence from archaeology, linguistics and physical anthropology indicates that the first settlers were East Polynesians who became the Māori. Migration accounts vary among Māori tribes or iwi, whose members can identify with the different waka in their genealogies or whakapapa.

In fact nowhere in the authentic voyaging traditions is there an account of several canoes all arriving together at one place and time. The spurious fleet scenario was then accepted by some Māori including Te Rangi Hiroa (Sir Peter Buck), and won general acceptance until it was debunked in the 1960s by the research of David Simmons and others. More recent research has revealed that this concept originated with European researchers including Percy Smith who attempted to cobble together various unrelated Māori legends. During the 19th and early 20th centuries, the idea arose that Māori had voyaged to New Zealand in the so-called 'Great Fleet of 1350AD' which claims that seven canoes arrived simultaneously.

Māori oral history describes their arrival from Hawaiki (a mythical homeland in tropical Polynesia) by large ocean–going canoes (waka). Archaeological and linguistic evidence (see Sutton 1994 cited in References section below) suggests there were probably several waves of migration from Eastern Polynesia to New Zealand between 800 and 1300. Māori origins therefore cannot be separated from those of their Polynesian ancestors (for more information see Polynesian culture). Polynesian voyagers are believed to have migrated to what is now New Zealand from eastern Polynesia in the latter part of the 1st millennium.

New Zealand was one of the last areas of the planet to be reached by humans. . It is also the name of the people and language of the Cook Islands, referred to as Cook Islands Māori. "Māori" has cognates in some other Polynesian languages such as Hawaiian in which the word maoli means native, indigenous, real or actual.

The word māori means "normal" or "ordinary" in the Māori language and denotes mortal beings as distinct from the gods. Māori is the name of the indigenous people of New Zealand, and their language.