Marbles

Marbles made in such a way are difficult to classify and generally grouped as "semi-machine-made". [12] Introduction to Dairy Science,Guelph. Early mechanical methods were similar to modern ones, but used as assistance in manual production rather than automated mass production. This has the effect that the milk is transformed into a relatively stable foam, which occupies a much larger volume than the original liquid. Colour can be added by dropping dyes onto the marbles while they are still liquid. Casein, together with other components, thereby forms a tough film which surrounds the water vapour bubbles of boiling milk, preventing them from breaking. As the screws rotate, the marble travels along them, gradually being shaped into a sphere as it cools. On heating, this subtle architecture is destroyed: milk reaches a temperature (below boiling point of water) in which protein molecules are irreversibly changed in their spatial arrangement (denatured).

One mechanical technique is dropping globules of molten glass into a groove made by two interlocking parallel screws. At and below room temperature, droplets are arranged in a way that protects them from coalescing. Glass marbles can be fashioned through the production of glass rods which are stacked together to form the desired pattern, cutting the rod into marble-sized pieces using marble scissors. Proteins have the ability of coating bubbles and stabilizing foams; milk is an emulsion of very small fat droplets coated by casein. Clay, pottery, ceramic, or porcelain marbles can be made by rolling the material into a ball, and then letting dry, or firing, and then can be left natural, painted, or glazed. The reason behind the quick expansion of milk on heating is due to its chemical composition. Stone or ivory marbles can be fashioned by grinding. Milk does not actually reach boiling point faster than water.

Marbles were originally made by hand. The most durable form of milk is milk powder which is produced from milk by removing almost all water. They can be categorized into three general types: hand-made, machine-made, and semi-machine made. Condensed milk, made by removing most of the water, can be stored for many months, unrefrigerated. Marbles are made using many techniques. Sterilized milk, which is heated for a much longer period of time, will last even longer, but also lose more nutrients and assume a still different taste. Additionally, many glass artisans produce marbles for the collectors' market only, with some selling for hundreds of dollars. The spoilage of milk can be forestalled by using ultra-high temperature (UHT) treatment; milk so treated can be stored unrefrigerated for several months until opened.

Due to a large market, there are many related side businesses that have sprung up such as numerous books and guides, web sites dedicated to live auctions of marbles only, and collector conventions. Most milk is pasteurized by heating briefly and then refrigerated to allow transport from factory farms to local markets. This trend is typical of toy collecting and has been seen with baseball cards, postage stamps, metal toys, and dolls. In order to prevent spoilage, milk can be kept refrigerated and stored between 1 and 4 degrees Celsius. Thus, it may be predicted that the value of today's marbles will soon reach a peak, then decline as vast amounts of similar marbles enter the market (as the collectors' estates are broken up) and then slowly increase again over time. Through pasteurization, however, these lactic acid bacteria are mostly destroyed, which means that other germs can grow unfettered and thus cause decomposition. As with any collectible toy, the value seems to first peak when the collectors with the fondest memories enjoy recalling their childhoods through their acquisitions. The ensuing acidity in turn prevents other germs from growing, or slows their growth significantly.

Very ugly but rare marbles may be valued as much as those of very fine quality. The naturally-occurring lactic acid bacteria in raw milk, under suitable conditions, quickly produce large amounts of lactic acid. Each of these ratings is used to calculate the marble's worth, with the final dollar value influenced by overall demand. Pasteurized cow's milk, on the other hand, spoils in a way that makes it unsuitable for consumption, causing it to assume an unpleasant odor and pose a high danger of food poisoning if ingested. Every marble can be completely categorized by many factors including its condition, size, type, manufacturer/artisan, age, style, materials, scarcity, and the existence of original packaging (which is further rated in terms of condition). There are four noted periods of milk decay:. As with any collecting hobby, the hyper-specialization that takes place can seem astounding to the uninformed. This fermentation process is exploited in the production of various dairy products such as cheese and yogurt.

Marble collecting is a hobby enjoyed by thousands of people around the world. This is the result of fermentation: lactic acid bacteria turning the milk sugar into lactic acid. Glass marbles, too, became the most popular variety, and have remained so to this day. When raw milk is left standing for a while, it turns sour. Glass marbles entered mass production in the early 20th century, when WWI cut off the importation of glass marbles from Europe, causing American innovation to be applied to the task, producing a mechanized method of glass marble production which became the most common system in the world. [11]. Ceramic marbles entered actual mass production in the 1870s, the first truly cheap mass-production of marbles for the masses. Donkey and horse milk have the lowest fat content, while the milk of seals contains more than 50% fat.

In 1846 a German glass blower invented "marble scissors", allowing the first large scale production of marbles. In Russia and Sweden, small moose dairies also exist. They were commonly made of stone, metal, or glass until the 18th century, when ceramic marbles become more common. In addition to cows, the following animals provide milk for dairy products:. They are mentioned prolifically in Roman literature, and examples exist of marbles previously in ancient Egypt. Whole milk is recommended to provide sufficient fat for developing toddlers who have graduated from breast milk or infant formula. Originally marbles were constructed from clay or marble, hence their name. The best-selling variety of milk is semi-skimmed; in some countries full-cream (whole) milk is generally seen as less healthy and skimmed milk is often thought to lack taste.

You can either have quitsies (able to quit) or no quitsies (unable to quit). For skimmed or semi-skimmed milk, all of the fat content is removed and then some (in the case of semi-skimmed milk) is returned. Quitsies: A term decided before the game which will allow any opponent to stop the game without consequence. Full cream, or whole milk, has the full milk fat content (about 3-4% if Friesian- or Holstein-breed are the source). . In the United States, skim milk is also known as "fat free" milk, due to USDA regulations stating that any food with less than 1/2 gram of fat per serving can be labeled "fat free". While adults rarely play marbles themselves, many engage in marble collecting, both for nostalgia and for the aesthetic appeal of the brightly colored little spheres, or art marbles which excell in art glass quality. In Britain, it is possible to get Channel Island milk, which is 5.5% fat.

However, other players get a chance to hit the Gai taker's boulder and, if successful, then the marbels change ownership. Modern commercial dairy processing techniques involve first removing all of the butterfat, and then adding back the appropriate amount depending on which product is being produced on that particular line. But if a player can take the Gai out then he gets all the marbels. Generally all store-bought milk in Canada has been homogenized, yet the term is also used as a name to describe butterfat content for a specific variety of milk. It is not easy when there are marbels in the periphery. "Homogenized" milk (or "Homo milk" in short) refers to milk which is 3.25% butterfat. The major move is to hit the central Gai marble and take it out of the rectangle. Note: In Canada "whole" milk refers to unhomogenized milk.

If they are hit but stays within the rectangle, then the player plays one more marble as a fine that is placed in the rectangle. and Canada is sold as:. The marbels hit bt the matris must go out of the rectangle. Milk in the U.S. The players take turn to hit the marbles on the rectangle with a bigger marble (often called Boulder or Matris). In some countries these are:. These marbels are placed on the periphery of a rectangle and one special marble (the Gai) is placed in the center. Cow's milk is generally available in several varieties.

In Gaipar, each player contributes 4 marbles. Condensed milk is distributed in metal cans, 250 and 125 ml paper containers and 100 and 200 ml squeeze tubes, and powdered milk (skim and whole) is distributed in boxes or bags. It is immensely popular in Bengal. Milk comes in a variety of containers with local variants:. One such specialized rule of game for Marble is named Gaipar. Many people feel that such "UV protected" milk tastes better. As with many children's games, new rules are invented all the time, and each group is likely to have its own version of the game, often customised to the particular environment they play in. Ultraviolet light from fluorescent lighting can destroy some of the proteins in milk so many companies that once distributed milk in transparent or highly translucent containers are now using thicker materials that block the harmful rays.

In this game, a useful strategy is to throw a marble such that it lands in a protected or difficult-to-reach location, should it miss. Most people purchase milk in plastic jugs or bags or in waxed-paper cartons. A larger-scale game of marbles might involve taking turns to try and hit the opponent's marble to win. Glass milk containers are rare these days. Other versions consist of shooting marbles at other target marbles or holes in the ground. Milk preserved in this fashion does not need to be refrigerated before opening and has a longer shelf life than milk in ordinary packaging. One version consists of drawing a circle in the sand with a stick, and adhering to informally agreed upon rules, players will take turns at knocking marbles out of the circle with their own marbles. Milk preserved by the UHT process is sold in boxes often called a "brick" that lack the peak of the traditional milk carton.

Some art glass marbles are even being made today in a huge size (greater than 12") for display purposes only. In the US, pictures of missing children were printed on the larger milk cartons as a public service until it was determined that this was disturbing to children. Marbles is a class of children's games played with glass, clay, or agate orbs generally approximately half an inch (1cm) across, but can range from a very small size of less than 1/4 inch, to a very large size of over 3". The half-pint milk carton is the traditional unit as a component of school lunches. Marbles named according to their colour. Recently milk has been sold in smaller resealable bottles made to fit in automobile cup holders. Queenie? Any marble larger than the majority of the marbles in a given context may be termed a boulder. First the gallon and half-gallon sizes were sold in plastic jugs while the smaller sizes were sold in milk cartons.

Marbles named according to their size, e.g. Now milk is increasingly sold in plastic bottles. A "marble" is the small hard sphere used for playing the game and for decoration and collection, usually made of glass, clay, stone, or plastic. In the United States bottles were replaced with milk cartons, tall boxes with a square cross-section and a peaked top that can folded outward upon opening to form a spout. "Keepsies" (or "for keeps") is a variation of any game, where players win the marbles used in the game by their opponent. In New Zealand, milk is no longer distributed in glass bottles. In the UK, milk can be delivered daily by a milkman who travels his local milk round (route) using a battery-powered milk float, although this is becoming less popular as a result of supermarkets selling milk at cheaper prices.

Prior to the widespread use of plastics, milk was often distributed to consumers in glass bottles, and before that in bulk that was ladled into the customer's container. People buy it chilled at grocery or convenience stores or similar retail outlets. In many countries milk used to be delivered to households daily, but economic pressure has made milk delivery much less popular, and in many areas daily delivery is no longer avialable. Because of the perishable nature of milk, expeditious distribution is desirable.

http://www.notmilk.com/kradjian.html. This article, published by PETA, highlights some of the debate. Also there has been some controversy over whether or not humans, or any other mammals, are designed to consume milk after infancy. The following studies are used to support this position:.

Overconsumption of Cow's milk is argued to be unhealthy primarily due to its fat and cholesterol content. [2]. Overweight individuals who drink milk may benefit from decreased risk of insulin resistance and type 2 diabetes. Studies show possible links between low-fat milk consumption and reduced risk of arterial hypertension, coronary heart disease, and obesity.

A serving (1 cup or 250 ml) of 2%-fat milk contains 285 mg of calcium, which represents 22% to 29% of the daily recommended intake (DRI) of calcium for an adult, depending on the age, 8 grams of protein, and a number of other nutrients (either naturally or through fortification):. Raw Milk Versus Pasteurized Milk. The resulting pasteurized product is said to contribute to its own indigestability, be less nutritious, and turn rancid (as opposed to sour) with age. Those preferring raw milk argue that the pasteurization process also kills beneficial microorganisms and important nutritional constituents.

South Australia has the highest consumption of flavoured milk per person, where Farmers Union Iced Coffee outsells Coca-Cola, a success shared only by Inca Kola in Peru and Irn-Bru in Scotland. Chocolate-flavored milk has been sold for many years, followed recently by other flavors of milk and cream. Milk often has flavoring added to it for better taste or as a means of improving sales. Milk, sold commercially in countries where the cattle (and often the people) live indoors, commonly has vitamin D added to it to make up for lack of exposure to UVB radiation.

This mechanically reduces the size of the fat globules, so that they will not separate out into a cream layer. A complementary process for commercial milk is homogenization. In many countries it is illegal to sell milk that is not pasteurized. Dairies print expiration dates on each container, after which stores will remove any unsold milk from their shelves.

Pasteurized milk is still perishable and must be stored cold by both suppliers and consumers. Pasteurization kills many harmful microorganisms by heating the milk for a short time and then cooling it for storage and transportation. Milk produced for commercial consumption usually undergoes several processes. Half-and-half is used for creaming coffee and similar uses.

In the United States, a blended mixture of half cream and half milk is often sold in smaller quantities and is called half-and-half. The cream is often sold as a separate product with its own uses. Upon standing, fresh milk has a tendency to separate into a high-fat cream layer on top of a larger, skim-milk layer. Most dairies are local companies, as opposed to large or nationwide companies found in the southern hemisphere.

In North America a dairy facility processes milk and products obtained from milk (dairy products), such as cream, butter, and cheese. Dairy farming has become such a large business that in many countries the process is highly automated, with farmers using machines that attach directly to the teats of the cow's udder to speed milking, and breeds of cattle, such as Holstein, specially bred for increased milk production. It is the most commonly consumed form of milk. In the Western world, cow's milk is extracted on an industrial scale for human consumption and industrial uses.

Some human populations (most notably Europeans) retain the ability to digest lactose into adulthood. In humans, production of lactase can decline in adulthood, leading to an inability to digest milk; this is known as lactose intolerance. Lactose in milk is digested with the help of the enzyme lactase. Factors such as the type of protein; the proportion of protein, fat, and sugar; the levels of various vitamins and minerals; and the size of the butterfat globules and the strength of the curd are among those than can vary.[1] For example:.

The composition of milk differs widely between species. . It can reduce the risk of many diseases in both mother and baby. The early lactation milk is known as colostrum, and carries the mother's antibodies to the baby.

Human milk is fed to infants through breastfeeding, either directly or by the female expressing her milk to be saved and fed later. It can also be used to mean:. It is also processed into dairy products such as cream, butter, yoghurt, ice-cream, gelato, cheese, casein, whey protein, lactose, condensed milk, powdered milk, and many other food-additive and industrial products. The female ability to produce milk is one of the defining characteristics of mammals and provides the primary source of nutrition for newborns before they are able to digest more diverse foods.

Milk most often means the nutrient fluid produced by the mammary glands of female mammals. The milk has dehydrated and become hard and chalky). Dry (beyond use. A period of aromatic decay sets in accompanied by mould).

Coagulation (beyond use. Curdling (separation of curd and whey will occur but may still be consumable). Milk is still consumable at this stage). Rancid (also called "on the turn".

Reindeer. Water buffalo. Yaks. Camels (including the South American camelids).

Donkeys. Horses. Goats. Sheep.

Skim (no fat). 1/2 % (very low fat). 1 % (low fat). 2 % (reduced fat).

Whole varieties. Skimmed (about 0.1% fat). Semi-skimmed ("reduced fat" or "low fat", about 1.5-1.8% fat). Full cream (or "whole" in North America, about 3.25% fat).

The bag is then placed in a plastic jug and the corner cut off before the milk is poured. South Africa: Commonly sold in 1 litre bags. Most UHT-milk is packed in 1 litre paper containers with a sealed plastic spout. Australia and New Zealand: Distributed in a variety of sizes, most commonly in Tetra Paks for up to 1 litres, and plastic screw-top bottles beyond that.

United Kingdom: Most stores stock the equivalents of old Imperial sizes: 568 ml (1 pint), 1.136 l (2 pints), 2.273 l (4 pints) or, rarely, a combination including both metric and imperial sizes). Parts of Europe: Sizes of 500 millilitres, 1 litre (the most common), 2 litres and 3 litres are commonplace. 4 litre plastic jugs are also available. Canada: A 1 1/3 litre plastic bag (sold as 4 litres in 3 bags) is the most common, while 2 litre, 1 litre, 500 millilitre, and 250 millilitre cartons are also available.

The US single-serving size is usually the half-pint (about 240 ml). customary units) of rigid plastic or, occasionally for sizes less than a gallon, waxed cardboard. United States: Commonly sold in gallon, half-gallon and quart containers (U.S. A review published by the World Cancer Research Fund and the American Institute for Cancer Research states that at least 11 human population studies have linked dairy product consumption and prostate cancer.

There is no evidence that any such problem is specific to milk. A study suggests a correlation between high calcium intake and prostate cancer.[10]. [8][9]. Two studies show a correlation between high galactose consumption, and high rates of ovarian cancer.

A February 2005 study found a positive association between acne and the consumption of whole milk, skim milk, and other dairy products in high-school-age women.[7]. Researchers were surprised by their conclusion that weight gain was associated with dietary calcium and low-fat or skim milk, but not dairy fat.[6]. A study published in June 2005 suggests that consumption of milk by 9- to 14-year-old children is associated with weight gain, although the researchers identify that excessive calorie intake is the cause rather than dairy specific factors. Critics of milk claim that plant-based sources of calcium are preferable, on the grounds that animal proteins in milk causes leaching or excretion of calcium from bones.[5] Such critics refute the claim that milk prevents osteoporosis and make the counterclaim that milk, in fact, contributes to that disease.

Studies have failed to associate high calcium intakes with lower risk of hip and forearm fractures in men[3] or women[4]. Critics dispute the claim that drinking large amounts of milk can reduce the risk of bone fractures, especially in the elderly. Certain ethnic groups may be more susceptible to these effects. For those individuals, milk may induce symptoms such as cramping, bloating, gas, and diarrhoea.

Up to 70% of humans have an incomplete ability to digest milk, lactose intolerance. Low-fat and non-fat forms of milk may mitigate any such risk. Some milk is rich in saturated fat, which studies have linked to increased risk of atherosclerosis and coronary heart disease. Conjugated linoleic acid - beneficial fatty acid that inhibits several types of cancer in mice, has been shown to kill human skin cancer, colorectal cancer and breast cancer cells in in vitro studies, and may help lower cholesterol and prevent atherosclerosis; only available in milk from grass-fed cows.

Thiamine - B-vitamin important for cognitive function, especially memory. Selenium - cancer-preventive trace mineral. Potassium and Magnesium - for cardiovascular health. Vitamin A - critical for immune function.

Biotin and Pantothenic Acid - B vitamins important for energy production. Vitamin B12 and Riboflavin - necessary for cardiovascular health and energy production. Iodine - a mineral essential for thyroid function. Vitamins D and K - essential for bone health.

Cow's milk contains, on average, 3.4% protein, 3.6% fat, and 4.6% lactose, and supplies 66 kcal of energy per 100 grams. Human milk contains, on average, 1.1% protein, 4.2% fat, 7.0% lactose (a sugar), and supplies 72 kcal of energy per 100 grams. Crop milk, the regurgitated substance pigeons feed their young. A non-animal substitute such as soy milk, rice milk, and almond milk.

The white juice and the processed meat of the coconut in more-or-less liquid form, used especially in Thai, Indian (Kerala), and Polynesian cuisine.