Authors: Mateus Schreiner Garcez Lopes José Gregório Cabrera Gomez Marilda Keico Taciro Thatiane Teixeira Mendonça Luiziana Ferreira Silva
Publish Date: 2014/07/25
Volume: 41, Issue: 9, Pages: 1353-1363
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 poly3hydroxybutyrate P3HB Using nondetoxified hydrolysate Burkholderia sp F24 reached a cell dry weight CDW of 68 g L−1 containing 48 of P3HB and exhibited a volumetric productivity PP3HB of 010 g L−1 h−1 Poly3hydroxybutyrateco3hydroxyvalerate copolymers P3HBco3HV 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 10 to 50 g L−1 In high cell density cultivation using concentrated hemicellulosic hydrolysate F24 reached 2504 g L−1 of CDW containing 49 of P3HB and PP3HB of 028 g L−1 h−1 Based on these findings secondgeneration ethanol and bioplastics from sugarcane bagasse is proposed
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