Appearance: | Powder |
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Transport Package: | by Sea |
Specification: | 25KG/CTN 50KG/BAG |
Trademark: | YH |
Origin: | China |
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Polyglutamic acid (y-PGA) |
Polyglutamic acid (y-PGA), also known as natto bacteria gum, polyglutamic acid, is a water-soluble, biodegradable, non-toxic, biopolymer obtained by microbial fermentation. y-PGA polyglutamic acid is a special anionic natural polymer, which is a homotype formed by amide linkage between a-amino and y-carboxyl groups. The molecular weight of homo-polyamide y-PGA varies from 50,000 to 2 million Daltons. Its moisturizing and locking effect is 500 times that of hyaluronic acid. Mainly used for moisturizing, whitening, antibacterial and promoting skin health. Polyglutamic acid was first found to exist in the highly viscous drawing of Japanese natto food (fermented small soybeans), and it is referred to as y-PGA in China. Biopolymerization through liquid fermentation produces decomposable high-molecular amino acid polymers. HO&1онNH2
ITEM | SPECIFICATION |
Appearance | White to off-white powder |
Assay (Na+-PGA) | ≥2.5% |
Intrinsic viscosity, [η]/(dL/g) | 0.1~5.0 |
LD(Loss on Drying) | 10% max |
pH (1% solution) | 5.0~7.5 |
Clarity, OD400 (4% aq. sol'n,400nm) | 0.13 max |
Heavy metals (total as Pb, mg/kg) | 20 ppm max |
TPC (cfu/g) | 100 max |
E.coli | Negative in 25g |
Salmonella | Negative in 25g |