Dye-free poly-hydroxy-alkanoate prodn. - comprises drying moist bacterial biomass and heating followed by extn. with acetic acid

摘要

Dye-free polyhydroxyalkanoates are obtd. from bacterial biomass pref. from microorganism culture MB126 by drying the moist biomass, extracting the dried biomass and precipitating the polyhydroxyalkanoates. The dried bacterial biomass is obtd. using a residence time of 10 to 120 minutes at a temp. between 80 deg.C and under the m.pt. of the polyhydroxyalkanoates followed by extracting using an agent comprising acetic acid. ADVANTAGE - Less solvent is used and an optically pure prod. with greater chain length.