To increase the production of poly-γ-glutamic acid(PGA),the orthogonal design was used to test and investigate the formula of medium components:sodium glutamate,urea,trisodium citrate and starch.

Degradability of poly-γ-glutamic acid (γ-PGA) in water environment and soil environment was studied by measuring the variety of poly -γ -glutamic acid and glutamic acid with high performance liquid chromatography.

For the first time,the Bacillus strain B6-1,isolated from the rhizosphere of crops, co-produced the antifungal substances and poly-γ-glutamic acid,and was identified as Bacillus subtilis.

Optimization of γ-polyglutamic acid fermentatiom medium by response surface methdology;

Study on fermentation kinetics of γ-polyglutamic acid production by Bacillus subtilis;

Optimization on fermentation conditions ofγ-polyglutamic acid and preliminary analysis on its characters;

Influence effects and performance of γ-PGA degradability;

The Synthesis of Bioflocculant γ-PGA and Study on Its Flocculating Performance and Application;

Applications of γ-PGA in Water Treatment

Product condition analyse of poly-γ-glutamic acid condition;

The ability of poly-γ-glutamic acid(γ-PGA)to retard calcium phosphate depositing was investigated in the study.

As a multifunctional biological product, poly-γ-glutamic acid has been widely used in the fields of medicine, food processing and cosmetics industries, and has very extensive exploitation value and great application foreground.

Viscometric properties of bioorigin poly(γ-glutamic acid) dilute aqueous solutions;