NOVEL COPOLYMER OF POLY(3-HYDROXYBUTYRATE-CO-4-HYDROXYBUTYRATE-CO-LACTATE) AND METHOD FOR PREPARING THE SAME

摘要

A 3-hydroxybutyrate-4-hydroxybutyrate-lactate terpolymer is provided to be a biodegradable polymer and to replace the conventional synthetic plastics. A 3-hydroxybutyrate-4-hydroxybutyrate-lactate terpolymer contains lactate, 4-hydroxybutyrate, and 3-hydroxybutyrate as repeating units. A method for preparing the 3-hydroxybutyrate-4-hydroxybutyrate-lactate terpolymer includes a step of culturing or cultivating cells or plants having a gene of an enzyme, a phosphotransbutylase gene, a butyrate kinase gene, and a polyhydroxyalkanoate synthase gene. The enzyme coverts lactate into lactyl-CoA and converts 3-hydroxyalkanoate into 3-hydroxyalkanoyl-CoA.