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Flour is a powder made of cereal grains or roots. It is the main ingredient of bread, which is a staple food for many civilizations, making the availability of adequate supplies of flour a major economic and political issue at various times throughout history. Wheat flour is one of the most important foods in European and North American culture, and is the defining ingredient in most European styles of breads and pastries. Maize flour has been important in Mesoamerican cuisine since ancient times, and remains a staple in much of Latin American cuisine.



Flour contains a high proportion of starches, which are complex carbohydrates also known as polysaccharides. Leavening agents are used with some flours, especially those with significant gluten content, to produce lighter and softer baked products by embedding small gas bubbles.



The production of flour has also historically driven technological development, as attempts to make gristmills more productive and less labor-intensive led to the watermill and windmill, terms now applied more broadly to uses of water and wind power for purposes other than milling.

If barley is wetted in a container or on a special floor and stirred to keep oxygen levels high it will germinate. This produces high levels of alpha amylase which converts the starch to sugar. This process is called malting and the product is malt. This is an ancient process for producing a sugary solution for making cheap beverages such as whisky and beers. After malting barley can be used in two ways. It can be dried and sold as dried malt. Often with a high temperature treatment that caramelises some of the sugar to give a pleasant-tasting flavouring also known as 'malt'. This may be extracted with water to give a 'malt extract'. Dark beers are made from malt which has been heated so much it has almost burned black, hence the dark colour. After malting the grains do not just contain sugar. Before heating they also contain a lot of alpha amylase. This enzyme can convert still more starch to sugar

Vitamin B3



Also called Nicotinic Acid, Niacinamide, Nicotinic.



Acts as a co-enzyme in the release of energy from carbohydrates. Also needed to help breakdown fats and proteins. Aids in formation of red blood cells.

Since the 1950's doctors have used nicotinic acid to treat high cholesterol. Niacin is the only drug available that both substantially lowers the "bad" lipids (LDL), and increases the "good"(HDL) cholesterol. The reason this vitamin is not in the forefront of cholesterol therapy is because many people treated with high doses of niacin experience bothersome side effects such as; facial flushing, nausea, stomach pain, diarrhea and much more serious, liver damage.



Milk, eggs, meats (especially liver), chicken, fish, and most other protein-rich foods contain a significant amout of niacin. Also in smaller amounts in coffee and tea.



Dificiency is very rare in modern countries. Symptoms include: Pellagra (diarrhea, dermatitis, and dementia) Less severe symptoms of deficiency include irritability, loss of appetite, weekness and swollen tongue.

iron, iron sulfate, Used in the food industry as a carrier for iron.



Iron in the body works with proteins that release energy in metabolism such as hemoglobin, which carries oxygen in the blood stream. Also involved in the making of ammino acids, hormones, and neurotransmitters.

Iron can be found in meats, poultry, and fish and many fortified foods. Fruits, vegetables and juices also provide some iron.

Iron deficiency symptoms include; anemia, inability to concentrate, weakness, fatigue, pallor, being out of breath after small exertion, cold hands and feet. Some people may develop a smooth round tongue, and have difficulty swallowing.



Symptoms of overload include: nausea, vomiting, diarrhea, rapid heartbeat, dizziness, shock and even death.



***Parents should be warned that iron supplements and multivitamins containing iron are the second most common cause of poisoning in young children in the U.S. (Aspirin is the first) The lethal dose of ferrous sulfate for a 2-year-old is only 3g.***



Source: Harvard Medical School - Health Publications Group, Vitamins and Minerals

Vitamin B-1, Perfectly safe, despite adding minuscule amounts of nitrate to our food.

Vitamin B2, or riboflavin, is required to complete several reactions in the energy cycle. Reddening of the lips with cracks at the corners of the mouth, inflammation of the tongue, and a greasy, scaly inflammation of the skin are common symptoms of deficiency.Riboflavin (B2)- Classic riboflavin deficiency involves the lips, tongue, eyes, skin and nervous system. Vision changes, cheliosis (tiny lesions in the mouth or cracks in the corners of the mouth) tongue inflammation and discomfort eating or swallowing.



Riboflavin?s role in the body involves the metabolism of fats and proteins. Enzymes influenced by riboflavin are absolutely necessary to transport oxygen to the cells. A decrease in this vitamin can result in fatigue. New research indicates that migraine headache sufferers may benefit by riboflavin. 400mgs.day have been shown to lessen the incidence of migraines.



Required for red blood cell formation, antibody production, cell respiration and growth. Important for good muscle tone. Involved in metabolism of protein, protein fats, and carbohydrates. Necessary for good vision, skin, hair and nails.

Folic acid is the synthetic form of the B vitamin folate. Folic acid is necessary for the synthesis of nucleic acids and the formation of red blood cells. Folic-acid deficiency most commonly causes folic-acid-deficiency anemia. Symptoms include gastrointestinal problems, such as sore tongue, cracks at the corners of the mouth, diarrhea, and ulceration of the stomach and intestines. Large doses of folic acid can cause convulsions and other nervous-system problems.

The Food and Drug Administration (FDA) regulations require enriched grain products to contain this essential vitamin.



Current studies have discovered a link between folic acid and brain function in older people. The study divided 818 people ages 50 to 75 to take either a vitamin containing 800 micrograms of folic acid a day, or a dummy pill, for three years.



On memory tests, the supplement users had scores comparable to people 5.5 years younger, Durga said. On tests of cognitive speed, the folic acid helped users perform as well as people 1.9 years younger.

Wheat (Triticum spp.)is a grass that is cultivated worldwide. Globally, it is the most important human food grain and ranks second in total production as a cereal crop behind maize; the third being rice.Wheat grain is a staple food used to make flour for leavened, flat and steamed breads; cookies, cakes, pasta, noodles and couscous;and for fermentation to make beer, alcohol, vodka] or biofuel. Wheat is planted to a limited extent as a forage crop for livestock and the straw can be used as fodder for livestock or as a construction material for roofing thatch.



Source:http://en.wikipedia.org/wiki/Wheat



Severe allergic reactions (e.g. anaphylactic reaction) occur when the body's immune system strongly reacts to a particular allergen protein or irritant. These reactions may be caused by food, insect stings and medications. the nine priority food allergens are peanuts, tree nuts, sesame seeds, milk, eggs, fish (including crustaceans and shellfish), soy, wheat and sulphites.



Wheat quality begins with its constituent parts. The hard spring wheat kernel, on average, contains about 68% starch, 18% protein, 2% fats, 2% ash, and 2% cellulose. The proportion of these components varies. The starch, protein, and fats comprise the nutritive components. Cellulose is not digested so its nutritive value is zero



Six Basic Classes



The many varieties of winter and spring wheat are grouped into six official classes. The class a variety fits into is determined by its hardness, the color of its kernels and by its planting time. Each class of wheat has its own relatively uniform characteristics related to milling, baking or other food use.



Hard Red Winter (HRW) is an important bread wheat which accounts for almost forty percent of the U.S. wheat crop and wheat exports. This fall-seeded wheat is produced in the Great Plains, which extend from the Mississippi River west to the Rocky Mountains and from the Dakotas and Montana south to Texas. Significant quantities are also produced in California. HRW has a moderately high protein content, usually averaging 11-12%, and good milling and baking characteristics. There are no subclasses of this class.



Hard Red Spring (HRS), another important bread wheat, maintains the highest protein content, usually 13-14%, in addition to good milling and baking characteristics. This spring-seeded wheat is primarily grown in the north central United States--North Dakota, South Dakota, Minnesota and Montana. HRS comprises just over twenty percent of U.S. wheat exports. Subclasses based upon the dark, hard and vitreous kernel content (DHV), include

dark northern spring, northern spring and red spring.



Hard White (HW) is the newest class of wheat to be grown in the United States. It is used for noodles, yeast breads and flat breads and is grown in California, Idaho, Kansas and Montana. There are no subclasses. Currently, HW is used primarily in domestic markets with limited quantities being exported. It is anticipated that exports of this class will increase.



Soft White (SW) is a preferred wheat for flat breads, cakes, pastries, crackers and noodles and is grown primarily in the Pacific Northwest. Soft white is a low protein wheat, usually about 10%. SW represents just over twenty percent of total U.S. exports, primarily to Asia and the Middle East. Subclasses are soft white, white club and western white.



Soft Red Winter (SRW) is grown in the eastern third of the United States. SRW is a high yielding wheat, but relatively low in protein, usually about 10%. SRW is used for cakes, pastries, flat breads, crackers and snack foods. This fall-seeded wheat comprises about fourteen percent of U.S. wheat exports. There are no subclasses of this class.



Durum, the hardest of all U.S. wheats, provides semolina for spaghetti, macaroni and other pasta products. This spring-seeded wheat is grown primarily in the same northern areas as hard red spring, while smaller winter-sown quantities are grown in Arizona and California. Durum comprises nearly five percent of total U.S. wheat exports. Subclasses are hard amber durum, amber durum and durum.

Water is the most abundant nutrient in our body and plays an important transmission function in every body cell and tissue. Sixty percent of our body weight is water. The fact that you can live without food for a long period of time, even months, but live only for a few days without water is true. Under normal conditions, the body releases about one quart of water daily. Therefore, replacement to equal the losses is very important for survival.

Dehydration is the most common problem of water imbalance due to water losses and deprivation. The effects of dehydration on nutrition can adversely affect ones health. Dehydration is the major cause of ones diminished ability to perform during endurance activities. Body water is lost through the stomach, respiration, sweat, and the kidneys. It is recomended that 24oz of water a day should be taken. This amount can double or even triple with endurance type exercise.



A note about water: More and more evidence shows the benifit of being well hydrated.

Studies show that 75% of Americans are chronically dehydrated (likely applies to half the world's population), leading to possible health problems such as fatigue. In 37% of Americans, the thirst mechanism is so weak that it is often mistaken for hunger, leading to over-eating. Even MILD dehydration will slow down one's metabolism as much as 3%.



Bottled Water: Some types of bottled water are not subject to the same regulations as tap water. These are regulated as food products, and their regulations are largely related to sanitary food handling and processing practices. Bottled water manufacturers will provide a detailed report on the quality of their product to consumers who call to request it.

Corn Syrup High Fructose

Corn syrup is glucose produced from corn starch in a process called wet milling. Wet milling isolates the components of the corn through chemical or biochemical separation. The sugars are further separated by the use of enzymes. Since fructose is sweeter but not naturally found in corn, scientists have ways to convert the glucose into fructose. High fructose corn syrup (HFCS), also known as corn sugar, is a combination of glucose and fructose. Depending on the level of sweetness, the glucose to fructose ratio is adjusted. For example HFCS 55 is 55% fructose and is usually used in soft drinks. HFCS 42 is 42% fructose and used in foods that require only a little sweetening. The chemical composition of high fructose corn syrup is similar to that of sucrose, or table sugar. Still, the Food and Drug Administration (FDA) declared that under the formal definition of “natural,” HFCS does not meet the requirements. The enzymes that are used to separate the sugars are synthetic, deeming HFCS unnatural. Also, there has been controversial evidence showing that the consumption of HFCS is associated with obesity.

Gutierrez, David. "FDA Says High Fructose Corn Syrup Cannot Be Considered "Natural"" Independent News on Natural Health, Nutrition and

More. 12 Jan. 2009. Web. 16 May 2011. .

Hofstrand, Don. "Specialty Grain Terms A3-50 December 2006." Iowa State University Extension. Dec. 2006. Web. 16 May 2011.

.

Wilson, J. Justin. "Op-Ed." Center for Consumer Freedom. 15 June 2009. Web. 16 May 2011.

.

Yeast is a living, microscopic, single-cell organism that, as it grows, converts its food (through a process known as fermentation) into alcohol and carbon dioxide. This trait is what endears yeast to winemakers, brewmasters and breadbakers. In the making of wine and BEER, the yeast's manufacture of alcohol is desired and necessary for the final product; and carbon dioxide is what makes BEER and CHAMPAGNE effervescent. The art of breadmaking needs the carbon dioxide produced by yeast in order for certain doughs to rise. To multiply and grow, all yeast needs is the right environment, which includes moisture, food (in the form of sugar or starch) and a warm, nurturing temperature (70° to 85°F is best).

Salt is one of the most ubiquitous food ingredients around. Those who think of salt only as something used to perk up flavor might wonder what could possibly give this ingredient the level of importance it has gained through the ages. In reality, there is much more to this crystalline cube than first meets the eye.



Besides enhancing taste, salt has several other functions in food products. It acts as an antimicrobial or microbiological control agent. It contributes to certain chemical reactions that create a wide variety of food characteristics.



Sometimes the terms "salt" and "sodium" are used interchangeably, but technically this is not correct. "Salt" is sodium chloride. By weight, it is 40 percent sodium and 60 percent chloride.

Most foods and tap water contain sodium and chloride. Sodium is an essential nutrient, a mineral that the body cannot manufacture itself.

Because of sodium's importance to your body, the excretory and nervous systems guard against under-consumption of salt, which is a threat to your body's nerves and muscles. Other ions such as calcium, magnesium, and potassium are also very important. Concentrations of these ions are held in narrow ranges by the kidney.



The association between eating salt and the risk of blood pressure increasing is difficult to quantify. Some people are sensitive to changes in salt intake whereas others can adjust so that blood pressure does not rise at all.



Americans typically consume 4,000-8,000 mg each day, well above their daily needs. A goal for moderation for all adults, (including pregnancy and lactation) is approximately 2,400 mg of sodium per day.

This finely ground flour is made from soybeans and, unlike many flours, is very high in protein (twice that of wheat flour) and low in carbohydrates. Soy flour is ordinarily mixed with other flours rather than being used alone. It has a wide variety of uses such as for baking and to bind sauces. In Japan, it's very popular for making confections. Soy flour is sold in health-food stores--sometimes under the name kinako--and in some supermarkets.



Although soyfoods are widely recognized for their nutritional qualities, interest in soyfoods has risen recently because scientists have discovered that a soy component called isoflavones appears to reduce the risk of cancer. More research needs to be done to determine exactly how isoflavones work, but it appears that as little as one serving of soyfoods a day may be enough to obtain the benefits of this anticancer phytochemical.



Traditional soy products such as tofu, tempeh, and soy milk are very high in protein. Tempeh has the highest percentage of protein of the traditional soy products providing approximately 22 grams of protein for each 4 ounce (113 gram) serving. Tofu provides approximately 9 grams of protein for a similar small serving size. The Recommended Dietary Allowance of protein for adult males (aged 25-50) is appoximately 63 grams and 50 grams for adult females (aged 25-50). Soy products can provide a significant portion of one's daily protein needs.



It is important to keep in mind, however, that the balance of amino acids (protein building blocks) in soy is not the same as meat. Because soy foods does not have an ideal balance of amino acids, some experts recommend taking in a little extra soy foods and/or combining soy products or legumes with a whole grain dish at meals where other protein (e.g., eggs, fish) is not eaten. The amino acids in whole grains combine well with amino acids in soy and legumes to make a more ideal balance of amino acids. If a person's diet is reasonably-balanced, however, there is usually no need to be concerned about getting enough protein.

Source:http://www.soyinfo.com/



Vegetarians and health enthusiasts have known for years that foods rich in soy protein offer a good alternative to meat, poultry, and other animal-based products. As consumers have pursued healthier lifestyles in recent years, consumption of soy foods has risen steadily, bolstered by scientific studies showing health benefits from these products. Last October, the Food and Drug Administration gave food manufacturers permission to put labels on products high in soy protein indicating that these foods may help lower heart disease risk.



As with health claims for oat bran and other foods before it, this health claim provides consumers with solid scientific information about the benefits of soy protein and helps them make informed choices to create a "heart healthy" diet. Health claims encourage food manufacturers to make more healthful products. With soy, food manufacturers have responded with a cornucopia of soy-based wares. (See "The Soy Health Claim.")



No sooner had FDA proposed the health claim regulation, however, than concerns arose about certain components in soy products, particularly isoflavones. Resulting questions have engulfed the regulation in controversy.



This came as no surprise to Elizabeth A. Yetley, Ph.D., lead scientist for nutrition at FDA's Center for Food Safety and Applied Nutrition . "Every dietary health claim that has ever been published has had controversy," she says, "even the relationship of saturated fat to a healthy diet."



While the controversy may seem confusing to the consumer giving it casual consideration, a careful review of the science behind the rule reveals a strict divide between what FDA allows as a health claim based on solid scientific research and related issues that go well beyond the approved statements about health benefits of soy protein.

Source:http://www.fda.gov/fdac/features/2000/300_soy.html

(Emulsifier) Makes bread softer and prevents staling, improves the stability of margarine, makes caramels less sticky, and prevents the oil in peanut butter from separating out. Mono- and diglycerides are safe, though most foods they are used in are high in refined flour, sugar, or fat.

These additives strengthen bread dough so it can be used in bread-making machinery and help produce a more uniform grain and greater volume. They act as whipping agents in dried, liquid, or frozen egg whites and artificial whipped cream. SODIUM STEAROYL FUMARATE serves the same function



Ref: Center for science in the public intrest

Tough, dry, stale, leathery, tasteless...

These are words that describe baked goods without emulsifiers. The processing, distribution and storage of these products necessitates the use of food additives to maintain the quality and freshness that consumers expect.



Emulsifiers, a subset of surfactants, are commonly used in many food products. An emulsion is a dispersion of small droplets of one immiscible liquid within another. Emulsifiers keep the droplets from coalescing. Although these food additives may offer some degree of emulsification, they perform more important functions in baked goods, such as starch complexing, protein strengthening and aeration.







Emulsifiers that condition the dough by strengthening the gluten protein network for better gas retention, improved texture, and increased volume are sodium- and calcium stearoyl lactylate (SSL and CSL), ethoxylated mono- and diglycerides (EMG), polysorbates (PS), succinylated monoglycerides (SMG), and diacetyl tartaric acid esters of monoglycerides (DATEM).

The scientific name for vitamin C, ascorbic acid helps maintain the red color of cured meat and prevents the formation of nitrosamines, which promote cancer (see SODIUM NITRITE). It helps prevent loss of color and flavor by reacting with unwanted oxygen. It is used as a nutrient additive in drinks and breakfast cereals. Sodium ascorbate is a more soluble form of ascorbic acid. ERYTHORBIC ACID is very similar to ascorbic acid, but has no value as a vitamin. Large amounts of ascorbic acid may reduce the severity of colds and offer other health benefits.

Natural food enzymes that, when taken with gassy foods, help reduce flatulence-sometimes even stopping it before it begins. Gas-producing foods like beans, broccoli, cabbage, cauliflower, grains and onions cause trouble because they contain hard- or impossible-to-digest complex sugars (see CARBOHYDRATE) that ferment in the large intestine. Digestive enzymes help break down these complex sugars into simple sugars that are more easily digestible.



Proteins produced by the cells that are crucial in chemical reactions and in building up or synthesizing most compounds in the body. Each enzyme has a specific function. The two classes of enzymes are metabolic and digestive. Metabolic enzymes catalyze the many chemical reactions in the body. Digestive enzymes are responsible for breaking down food into smaller absorbable units. There are specific enzymes that break down protein, fat and carbohydrate; these are protease, amylase and lipase respectively.

Soy lecithin is a mixture of fatty substances that are derived from the processing of soybeans. Lecithin is separated from soybean oil by the addition of water and centrifugation (rapid spinning) and purified for use as a food additive. Its chemical name is phosphatidylcholine, which identifies its major components of choline, phosphoric acid, glycerin, and fatty acids. Lecithin is used widely in foods as an emulsifier, stabilizer, and antioxidant.



Studies show most soy-allergic individual can safely eat products containing soy lecithin without experiencing any allergic reactions.



Although soyfoods are widely recognized for their nutritional qualities, interest in soyfoods has risen recently because scientists have discovered that a soy component called isoflavones appears to reduce the risk of cancer. More research needs to be done to determine exactly how isoflavones work, but it appears that as little as one serving of soyfoods a day may be enough to obtain the benefits of this anticancer phytochemical.



Traditional soy products such as tofu, tempeh, and soy milk are very high in protein. Tempeh has the highest percentage of protein of the traditional soy products providing approximately 22 grams of protein for each 4 ounce (113 gram) serving. Tofu provides approximately 9 grams of protein for a similar small serving size. The Recommended Dietary Allowance of protein for adult males (aged 25-50) is appoximately 63 grams and 50 grams for adult females (aged 25-50). Soy products can provide a significant portion of one's daily protein needs.



It is important to keep in mind, however, that the balance of amino acids (protein building blocks) in soy is not the same as meat. Because soy foods does not have an ideal balance of amino acids, some experts recommend taking in a little extra soy foods and/or combining soy products or legumes with a whole grain dish at meals where other protein (e.g., eggs, fish) is not eaten. The amino acids in whole grains combine well with amino acids in soy and legumes to make a more ideal balance of amino acids. If a person's diet is reasonably-balanced, however, there is usually no need to be concerned about getting enough protein.

Source:http://www.soyinfo.com/



Vegetarians and health enthusiasts have known for years that foods rich in soy protein offer a good alternative to meat, poultry, and other animal-based products. As consumers have pursued healthier lifestyles in recent years, consumption of soy foods has risen steadily, bolstered by scientific studies showing health benefits from these products. Last October, the Food and Drug Administration gave food manufacturers permission to put labels on products high in soy protein indicating that these foods may help lower heart disease risk.



As with health claims for oat bran and other foods before it, this health claim provides consumers with solid scientific information about the benefits of soy protein and helps them make informed choices to create a "heart healthy" diet. Health claims encourage food manufacturers to make more healthful products. With soy, food manufacturers have responded with a cornucopia of soy-based wares. (See "The Soy Health Claim.")



No sooner had FDA proposed the health claim regulation, however, than concerns arose about certain components in soy products, particularly isoflavones. Resulting questions have engulfed the regulation in controversy.



This came as no surprise to Elizabeth A. Yetley, Ph.D., lead scientist for nutrition at FDA's Center for Food Safety and Applied Nutrition . "Every dietary health claim that has ever been published has had controversy," she says, "even the relationship of saturated fat to a healthy diet."



While the controversy may seem confusing to the consumer giving it casual consideration, a careful review of the science behind the rule reveals a strict divide between what FDA allows as a health claim based on solid scientific research and related issues that go well beyond the approved statements about health benefits of soy protein.

Source:http://www.fda.gov/fdac/features/2000/300_soy.html

Azodicarbonamide occurs as a yellow to

orange red, odourless, crystalline

powder.



Uses As a strengthening agent for flour Azodicarbonamide is most commonly used for making "foamed" plastics (i.e. various rubbers, such as gym mats, etc.). Sounds yummy, doesn't it? This "food additive", if you even want to call it that, is not only banned in Australia and Europe, but is also ILLEGAL in Singapore, incurring up to a whopping 15 years in prison and a fine of $450,000 if you're caught using it in food.



Azodicarbonamide is also linked to "possibly" causing asthma According to www.pesticideinfo.org, azodicarbonamide is listed as "...toxicity to humans, including carcinogenicity, reproductive and developmental toxicity, neurotoxicity, and acute toxicity". A

Commercial bread bakers often use additives, such as dough conditioners, to improve the texture, appearance, and shelf-life of their bread. Dough conditioners strengthen the gluten (protein portion of wheat) and starch (complex carbohydrate) in the dough. This prevents overmixing of the bread dough, which can easily happen when large quantities of dough are made at one time. Overmixed dough rises irregularly, and thus produces funny shaped, dense loaves. The addition of dough conditioners helps to ensure rounded, well shaped, light loaves.



The most common dough conditioners are sodium stearoyl 2 lactylate, calcium stearoyl lactate, barley malt, ethoxylated and succinylated monoglycerides, and polysorbate 60.

AMMONIUM SULFATE is light-colored extended crystals, received as a result of production of caprolactam, in by-product-coking and acrylate industry.Ammonium sulfate's nitrogen can be very assimilated, besides nitrogen it contains sulfur, which is very important for nutrition of agriculture crops too.

Based on its histroy of use no food safety problems have been shown to occur with this chemical at the levels commonly used in foods. It is used in bread, rolls, and buns, artifically sweetened fruit jelly, canned potatoes, canned sweet peppers, canned tomatoes and as a jelling agent. In the canned products it provides calcium which has been shown to maintain the firmness of friuts and vegetables during the canning process.It also provides a source of calcium which aids in the jelling of artifically sweetened friut jellies. It acts as a dough conditioner in bakery products.

Yeast must have certain important nutrients or it gets stressed and produces a lot of unwanted by-products--or it gets stuck and ferments too slowly, etc. Without sufficent Micro nutrients you cannot optimize fermentation speed.



If you have sporadic fermentation problems, Micro nutrients will act as insurance. When needed, they are there and provide the yeast with the minerals/vitamins/trace minerals that are missing in that particular mash. Or they provide the extra nutrients when the yeast would have been stressed by other factors.

Sym: Orthophosphoric acid

Phosphoric acid is a corrosive acid that can form three different classes of salts, namely primary phosphates, dibasic phosphates and tribasic phosphates. Phosphoric acid is soluble in water. It is incompatible with strong caustics and it is corrosive to ferrous metals and alloys. It readily reacts with metals to form flammable hydrogen gas.

It is used as an anti-oxidant in food, as a flavour additive for sharp taste in food (jellies, preserves) and soft drinks, as a tang (Food Additive 338) and for the manufacture of yeasts and gelatine.

Propionic acid (systematically named propanoic acid) is a naturally-occurring carboxylic acid with chemical formula CH3CH2COOH. It is a clear liquid with a pungent odor. The anion CH3CH2COO- as well as the salts and esters of propionic acid are known as propionates (or propanoates).



Propionic acid has physical properties intermediate between those of the smaller carboxylic acids, formic and acetic acid, and the larger fatty acids. It is miscible with water, but can be removed from water by adding salt. As with acetic and formic acids, it consists of hydrogen bonded pairs of molecules both as the liquid and vapor.



Propionic acid displays the general properties of carboxylic acids: it can form amide, ester, anhydride, and chloride derivatives. It can undergo alpha-halogenation with bromine in the presence of PBr3 as catalyst (the HVZ reaction) to form CH3CHBrCOOH.

Acetic acid is formed when common airborne bacteria interact with the alcohol present in fermented solutions such as WINE, BEER or CIDER. Acetic acid is the constituent that makes vinegar sour. Acetic acid has been produced and used by humans since before the dawn of recorded history. Vinegar is formed from dilute solutions of alcohol, such as wine, by the action of certain bacteria in the presence of oxygen. These bacteria require oxygen, and the overall chemical change is the reaction of ethanol with oxygen to form acetic acid and water. Acetic acid is a clear, colorless liquid with a sharp, irritating odor of vinegar. The chemical compound acetic acid (from Latin acetum, meaning "vinegar"), or more properly ethanoic acid, is the acid that gives vinegar its sour taste. Acetic Acid is often used as a drying agent in packaged foods to extend shelf life.

Acetic acid is used as a food additive, as a photographic chemical, in the manufacture of plastics the primary use of acetic acid is used in the manufacture of cellulose acetate for films and plastic goods; about 75 percent of the acetic anhydride produced annually in the United States is used for this purpose. Approximately 1.5 percent of the annual acetic anhydride production is used in the synthesis of aspirin. Other uses include the manufacture of industrial chemicals, pharmaceuticals, perfumes, plastics, synthetic fibers, explosives, and weed killers. Because acetic anhydride reacts with water, it is sometimes used as a dehydrating agent in reaction mixtures where removal of water is necessary.

Lactic acid is primarily found in sour milk products, such as: koumiss, leban, yogurt, kefir, and some cottage cheeses. The casein in fermented milk is coagulated (curdled) by lactic acid.



Although it can be fermented from lactose (milk sugar), most commercially used lactic acid is derived by using bacteria such as Streptococcus thermophilus, Lactobacillus acidophilus, or Lactobacillus delbrueckii subsp. bulgaricus (formerly known as Lactobacillus bulgaricus) to ferment carbohydrates from nondairy sources such as cornstarch, potatoes, and molasses. Thus, although it is commonly known as "milk acid", vegan products can contain lactic acid as an ingredient.



Lactic acid may also be found in various processed foods, usually either as a pH-adjusting ingredient, or as a preservative (either as antioxidant or for control of pathogenic micro-organisms). It may also be used as a fermentation booster in rye and sourdough breads.



Potassium lactate, sodium lactate, and calcium lactate are the neutralized salts of lactic acid. Potassium lactate is used in many fresh and cooked meat products for shelf life control, color preservation, and reduction of sodium content. Sodium lactate has a mild saline taste and is therefore suitable for flavor enhancement in meat products as well. Sodium lactate is being produced in solution as well as dry. Calcium lactate is popular for fortification and improved texture in emulsified meat products like frankfurters. Ready-to-eat meat and poultry products commonly contain sodium or potassium lactate to control Listeria monocytogenes.



Lactic acid is also present in wheat beers, especially lambic, due to the activity of Pediococcus damnosus.



Lactic acid is widely used for reducing the number of pathogenic bacteria like E.coli, Salmonella, Campylobacter, and Listeria on animal carcasses like beef, pork, and poultry during the slaughtering process.



source:

http://en.wikipedia.org/wiki/Lactic_acid