Journal of Environmental Health Science & Engineering33PRODUCTION AND RECOVERY OF POLY-Β-HYDROXYBUTYRATE FROM WHEY DEGRADATION BY AZOTOBACTER193198A. KhanafariA. Akhavan SepaheiM. Mogharab20151209Three strains of Azotobacter chroococcum were studied to produce poly-β hydroxybutyrate as a inclusion body by whey degradation. Optimum degradation whey results were obtained when using whey broth as a fermentation medium without extra salt, temperature at 35 °C and pH 7 (Phttps://ijehse.tums.ac.ir/index.php/jehse/article/view/89https://ijehse.tums.ac.ir/index.php/jehse/article/download/89/88