Soy protein

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Soybeans also contain biologically active or metabolic proteins such as enzymes, trypsin inhibitors, hemagglutinins, and cysteine proteases very similar to papain. The soy cotyledon storage proteins, important for human nutrition, can be extracted most efficiently by water, water plus dilute alkali (pH 79), or aqueous solutions of sodium chloride (0.52 M) from dehulled and defatted soybeans that have undergone only a minimal heat treatment so that the protein is close to being native or undenatured. Soybeans are processed into three kinds of modern protein-rich products: soy flour, soy concentrate, and soy isolate.Contents1 History 2 Food uses 3 Functional uses 4 Production methods 5 Product types 5.1 Isolates 5.2 Concentrates 5.3 Flours 6 Nutrition 6.1 Biological value of soy protein 7 Health 8 Uses 8.1 Textured Soy Protein 9 References 10 External links 11 See also // HistorySoy protein {90%protein (N x 6.25) on a moisture-free basis} has been available since 1936 for its functional properties. In 1936, American organic chemist Percy Lavon Julian designed the world's first plant for the isolation of industrial-grade soy protein. The largest use of industrial grade protein was and still is for paper coatings, in which it serves as a pigment binder. However, Dr. Julian's plant must have also been the source of the "soy protein isolate" which Ford's Robert Boyer and Frank Calvert spun into an artificial silk that was then tailored into that now famous "silk is soy" suit that Henry Ford wore on special occasions. The plant's eventual daily output of forty tons of soy protein isolate made the Soya Products Division into Glidden's most profitable division.During WWII, the fire-extinguishing soy protein foam, "Aero-Foam," the U.S. Navy's fire-fighting "bean soup," was the brainchild of Percy Lavon Julian. When a hydrolyzate of isolated soy protein was fed into a water stream, the mixture was converted into a foam by means of an aerating nozzle. The soy protein foam was used to smother oil and gasoline fires aboard ships and was particularly useful on aircraft carriers. It saved the lives of thousands of sailors.[citation needed]In 1958, Central Soya of Fort Wayne, Indiana acquired Julian's Soy Products Division (Chemurgy) of the Glidden Paint Company, Chicago. Recently, Central Soya's (Bunge) Protein Division, in January,2003, joined/merged with DuPont's soy protein (Solae) business, which in 1997 had acquired Ralston Purina's soy division, Protein Technologies International (PTI) in St. Louis. Eighth Continent, an "ersatz" soy milk, is a combined "venture" product of DuPont's and General Mills.Food-grade soy protein isolate first became available on October 2, 1959 with the dedication of Central Soya's edible soy isolate, Promine D, production facility on the Glidden Company industrial site in Chicago. An edible soy isolate and edible spun soy fiber has also been available since 1960 from the Ralston Purina Company in St. Louis, who had hired Boyer and Calvert. In 1987, PTI became the world's leading maker of isolated soy protein.Food usesSoy protein is used in a variety of foods such as salad dressings, soups, imitation meats, beverage powders, cheeses, non-dairy creamer, frozen desserts, whipped topping, infant formulas, breads, breakfast cereals, pastas, and pet foods.Functional usesSoy protein is used for emulsification and texturizing. Specific applications include adhesives, asphalts, resins, cleaning materials, cosmetics, inks, pleather, paints, paper coatings, pesticides/fungicides, plastics, polyesters, and textile fibres.Production methodsEdible soy protein "isolate" is derived from defatted soy flour with a high solubility in water (high NSI). The aqueous extraction is carried out at a pH below 9. The extract is clarified to remove the insoluble material and the "supernatant" is acidified to a pH range of 4-5. The precipitated protein-curd is collected and separated from the whey by centrifuge. The curd is usually neutralized with alkali to form the sodium proteinate salt before dryingSoy protein concentrate is produced by immobilizing the soy globulin proteins while allowing the soluble...(and so on) To get More information , you can visit some products about limestone impact crusher, womens casual denim, . The T8 Fluorescent Lighting With Diffuser 58W,70W products should be show more here!