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Polyglutamic acid (γ-PGA), also known as nattokinase gel or polyglutamic acid, is a water-soluble, biodegradable, non-toxic biopolymer produced through microbial fermentation. It is primarily used for moisturizing, brightening, antibacterial effects, and promoting skin health.
Polyglutamic acid has a wide molecular weight distribution (2 kDa–10,000 kDa) and is classified into different grades based on application: agricultural grade (<20,000), cosmetic/food grade (500,000–700,000), pharmaceutical grade (800,000–1,000,000), and water treatment grade (1,200,000–1,500,000). Its core characteristics include water solubility, biocompatibility, biodegradability, and non-toxicity. The molecular chains contain a large number of free carboxyl groups, endowing it with excellent water absorption, metal chelation capacity, and pH responsiveness.
| Item | Specification |
| Melting Point | N/A |
| Boiling Point | N/A |
| Thermal stability | Begins to decompose at temperatures above 120°C; non-volatile; |
| PH | 5.0–8.0 (1% aqueous solution) |
| Flash point | N/A |
| Solubility | Highly soluble in water, forming a clear, viscous solution; insoluble in organic solvents. |
| Properties | Anionic polyelectrolyte; can be cross-linked to form hydrogels; biodegradable. |
Cosmetics: As a highly effective moisturizer, it is used in creams, serums, masks, lotions, and other products to lock in skin moisture, improve dryness, and enhance product texture and stability.
Food: polyglutamic acid is used as a thickener, stabilizer, and moisturizer in beverages, dairy products, and pastries to improve texture, extend shelf life, and as a dietary fiber supplement.
Agriculture: γ-PGA is used as a water-retaining agent in crop cultivation to improve soil water and fertilizer retention, promote crop growth, and reduce water waste.
Pharmaceuticals: polyglutamic acid powder is used as a drug carrier to encapsulate drugs, improving solubility and bioavailability. It can also be used in wound dressings and tissue engineering materials.
Water Treatment: γ-PGA is used as a flocculant in industrial wastewater and drinking water treatment to adsorb impurities, improve water quality, and prevent secondary pollution.
Jinan Jinbang Chemical Co., Ltd., strategically located within the New Materials Industrial Park in Tianqiao District, Jinan City, Shandong Province, stands as a prominent chemical innovator since its establishment in 2015. Operating from a modern, expansive 37,500 m² manufacturing facility, we are dedicated to the research & development, production, and global distribution of high-performance chemical solutions.
We are always committed to delivering optimal chemical solutions for all application scenarios.
