Poly-B-hyroxybutyrate Productio from Waste Oils by Burkholderiar cepacia

Abstract

Burkholderia cepacia grew on defined medium containing petroleum (diesel oil) or vegetable oil (soybean oil) as sole carbon source and accumulated polyhydroxybutyrate(PHB) in cytoplasmic region. PHB productivity by B. cepacia in the defined medium with petroleum and vegetable was higher than that in glucose and acetate. The electrochemical reducing power activated the PHB production but oxidizing power did not inhibit the PHB production. From these results, we found a possibility that waste petroleum and used vegetable oil may be a proper carbon source for PHB production instead of glucose, and electrochemical energy can be applied to the PHB production.