Polyglutamic Acid is an anionic polypeptide polymer, a viscous substance. It has good water solubility and biodegradability. This product is mainly produced by microbial fermentation process.
ITEMS | STANDARD | RESULTS | |||||
Physical Appearance | White to off white granular or powder, no agglomeration | Complies | |||||
ASSAY | ≥25% | 25.3% | |||||
Molecular Weight | 980k-1200kDa | ≈1000kDa | |||||
Loss on drying | ≤10% | 4.03% | |||||
Heavy metals (Pb) | ≤10 mg/kg | Complies | |||||
Transmittance (5g/L,AQ,400nm) | ≥95% | 99.2% | |||||
pH (10g/L,AQ, 25℃) | 5.0-7.5 | 6.72 | |||||
Total plate count | ≤100 CFU/g | 60 | |||||
Yeast Mold | ≤100cfu/g | Conforms | |||||
Salmonella | Negative | Negative | |||||
E.Coli | Negative | Negative | |||||
Conclusion | Conform to the specification of the requirement. | ||||||
Storage | Store in a cool and dry place, keep away from direct strong and heat. |
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