AN IMPROVED NON SOLVENT BASED PROCESS FOR EXTRACTION AND RECOVERY OF POLY-B-HYDROXYBUTYRATE (PHB)

摘要

the microbial cell biomass after PHB accumulation phase was harvested by centrifugation and thermally treated in the presence of aqueous ammonia. After ammonolysis, the suspension was centrifuged and the pellet was washed with sodium hypochlorite to obtain a white precipitate which, on drying, gave a white powder which was of 92 - 94% purity.