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Quick Details

  • CAS No.: 25513-46-6
  • Other Names: gamma PGA
  • MF: (C5H9NO4)x
  • EINECS No.: NA
  • FEMA No.: NA
  • Place of Origin: Jiangsu, China (Mainland)
  • Type: Stabilizers
  • Brand Name: Lubon
  • Model Number: 92%

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Packaging Details as requirements
Delivery Time 21 DAY


Gamma polyglutamic acid Gamma PGA
Molecular formula:(C5H9NO4)x
Molecular weight:147.129
White/off-white powd

Gamma polyglutamic acid  Gamma PGA
CAS No: 25513-46-6
Molecular formula: (C5H9NO4)x
Molecular weight: 147.129




Gamma-poly-glutamic acid (gamma-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 100~1000 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.



 gamma-PGA and its derivatives can be widely used in the food industry, cosmetics, health care, 
water treatment, hygienic products, medical and other fields.

Applications of gamma-PGA

Application field

Product type

Biochemical functionality

Food industry


Viscosity enhancement for liquid products

Texture enhancer

Texture improvement for bakery products and noodles

Animal feed supplement

Facilitating minerals absorption, improving bone growth, egg-shell strength, and albumin firmness, decreasing body fat


Nutrition supplement

Facilitating calcium absorption, improving osteoporosis conditions

Medical treatment

Controlled release drug carrier, medical bondage

Biocompatible carrier for cancer drug, gene therapy



Improving skin-care quality, reducing skin wrinkle conditions

Water treatment

Heavy metal absorbent

Removal of heavy metals and radionuclide

Wastewater treatment

Biopolymer flocculants

Substitute for polyacrylamide or PAC


Increase the quality and quantity of plants, Soil improvement, Seed coating

Inhibitor, anti-pathogen,

High water absorbent

  • Suggested usage: 0.05% ~ 1.00%, or as required

  • We offer technical research team to test the efficacy and use of PGA in cosmetic products and agriculture, and assist clients in application development trials.



Product Specification



SPECIFICATION (Food/ Cosmetic grade)

Physical Appearance

White to off-white, free-flow powders

Purity (gamma-PGA)

92% (by HPLC)

Molecular Weight

700 kD (by GPC/HPLC)

LD(Loss on Drying)

10% max., by automatic infrared analyzer



Clarity, OD400

(4% aq. sol’n)

0.13 max. (Cosmetic Grade: 0.07 max.)

Heavy metals

Total as Pb: 20 ppm max.


3,000 max. (Cosmetic Grade 500 max.)





Particle size

100% thru 100 mesh

Packaging and storage,

  • gamma-PGA pure powder for Medicine, Food, or Cosmetic.
  • gamma-PGA broth powder for Agriculture.
  • 100g,1kg,10L, or or packed to customer’s requirement.
  • Keeping in cool place with no direct sunshine exposure and the temperature is below 20°C, the validity period is two years.

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