Polyhydroxyalkanoate biosynthesis and simultaneous remotion of organic inhibitors from sugarcane bagasse hydrolysate by Burkholderia sp

J Ind Microbiol Biotechnol. 2014 Sep;41(9):1353-63. doi: 10.1007/s10295-014-1485-5. Epub 2014 Jul 25.

Abstract

Burkholderia sp. F24, originally isolated from soil, was capable of growth on xylose and removed organic inhibitors present in a hemicellulosic hydrolysate and simultaneously produced poly-3-hydroxybutyrate (P3HB). Using non-detoxified hydrolysate, Burkholderia sp. F24 reached a cell dry weight (CDW) of 6.8 g L(-1), containing 48 % of P3HB and exhibited a volumetric productivity (PP3HB) of 0.10 g L(-1) h(-1). Poly-3-hydroxybutyrate-co-3-hydroxyvalerate copolymers (P3HB-co-3HV) were produced using xylose and levulinic acid (LA) as carbon sources. In shake flask cultures, the 3HV content in the copolymer increased from 9 to 43 mol% by adding LA from 1.0 to 5.0 g L(-1). In high cell density cultivation using concentrated hemicellulosic hydrolysate F24 reached 25.04 g L(-1) of CDW containing 49 % of P3HB and PP3HB of 0.28 g L(-1 )h(-1). Based on these findings, second-generation ethanol and bioplastics from sugarcane bagasse is proposed.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Burkholderia / growth & development
  • Burkholderia / isolation & purification
  • Burkholderia / metabolism*
  • Cellulose / chemistry
  • Cellulose / metabolism*
  • Industrial Microbiology
  • Molecular Sequence Data
  • Phylogeny
  • Polyhydroxyalkanoates / biosynthesis*
  • Saccharum / chemistry
  • Saccharum / metabolism*
  • Saccharum / microbiology
  • Soil Microbiology
  • Xylose / metabolism

Substances

  • Polyhydroxyalkanoates
  • Cellulose
  • bagasse
  • Xylose