Gamma Poly-glutamic acid (γ-PGA) is a natural occurring, multi-functional, and biodegradable biopolymer. It is produced through fermentation by Bacillus subtilis using glutamic acid. PGA is consists of glutamic acid monomers crosslinked between α-amino and γ-carboxyl groups, and the molecular weight of PGA is usually between 500~5,000 kDa. It is water-soluble, edible and non-toxictowards human, and is environment friendly. It has broad applications in the fields of medicine, food, cosmetics, and water treatment.
|Appearance||White or off-white powder|
|pH (1% in water)||5.0-7.5|
|Heavy metals||20 ppm max.|
|Loss on Drying||10.0%|
|Particle size||100% through 100 mesh|