Production of Polyester Blend of Poly(3-hydroxyutyrate-co-4-hydroxybutyrate) and Poly(3hydroxyalkanoate) with Saturated and Unsaturated Monomers from 4-Hydroxybutyric Acid by Chromobacterium sp.

Chromobacterium sp. isolated from a river soil produced a polyester blend of poly(3-hydroxybutyrate-co-4-hydroxybutyrate)(P(3HB-co-4HB)) and poly(3-hydroxyalkanoate) (P(3HA)) consisting of both saturated 3-hydroxyalkanoic acid(3HA) units of even carbon number from C4 to C14 and unsaturated 3HA units of carbon number C12 and C14, when 4hydroxybutyric acid(4HBA) was fed as the sole carbon sources.