GMP standard Natural Casein

Product Description
Casein is a family of related phosphoproteins. These proteins are commonly found in mammalian milk, comprising c. 80% of the proteins in cow's milk and between 20% and 45% of the proteins in human milk. Casein has a wide variety of uses, from being a major componet of cheese, to use as a food additive. The most common form of casein is sodium caseinate. As a food source, casein supplies amino acids, carbohydrates, and two essential elements, calcium and phosphorus.
Casein contains a high number of proline residues, which do not interact. There are also no disulfide bridges. As a result, it has relatively little tertiary structure. It is relatively hydrophobic, making it poorly soluble in water. It is found in milk as a suspension of particles, called casein micelles, which show only limited resemblance with surfactant-type micelles in a sense that the hydrophilic parts reside at the surface and they are spherical. However, in sharp contract to surfactant micelles, the interior of a casein micelle is highly hydrated. The caseins in the micelles are held together by calcium ions and hydrophobic interactions. Any of several molecular models could account for the special conformatioon of casein in the micelles. One of them proposes the micellar nucleus is formed by several submicelles, the periphery consisting of microvellosities of K-casein. Another model sugggests the nucleus is formed by casein-interlinked fibrils. Finally, the most recent model proposes a double link among the caseins for gelling to take place. All three models consider micelles as colloidal particles formed by casein aggregates wrapped up in soluble K-casein molecules.
Product: Casein
Appearance: Creamy White Fine Powder
Protein:>90%
Casein:>98%
Fat: <2%
Moisture:<12%
Ash:<2%
Viscosity:700-2000mpa.s
As:<2mg/kg
Pb:<1mg/kg
Three cyanamide:Not detected
Total Plate Count: <10000cfu/g
Yeast&Mold: <10cfu/g
E.Coli: Not detected
Salmonella: Not detected
Functions
Paint;Glue;Cheesemarking;Plastics and fiber;Protein supplements;Medical and dental uses.
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