期刊
BIORESOURCE TECHNOLOGY
卷 200, 期 -, 页码 1085-1088出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2015.11.036
关键词
Sugarcane straw; Hemicellulosic hydrolyzate; Xylitol; Co-substrates; Candida guilliermondii
资金
- FAPESP (Fundacao do amparo a pesquisa do estado de Sao Paulo, Brazil) [2013/27142-0]
- CNPq (Conselho Nacional de Desenvolvimento Cientifico e Tecnologico, Brazil)
Biotechnological production of xylitol is an attractive route to add value to a sugarcane biorefinery, through utilization of the hemicellulosic fraction of sugarcane straw, whose availability is increasing in Brazil. Herein, supplementation of the sugarcane straw hemicellulosic hydrolyzate (xylose 57 g L-1) with maltose, sucrose, cellobiose or glycerol was proposed, and their effect as co-substrates on xylitol production by Candida guilliermondii FTI 20037 was studied. Sucrose (10 g L-1) and glycerol (0.7 g L-1) supplementation led to significant increase of 8.88% and 6.86% on xylose uptake rate (1.11 g L-1 h(-1) and 1.09 g L-1), respectively, but only with sucrose, significant increments of 12.88% and 8.69% on final xylitol concentration (36.11 g L-1) and volumetric productivity (0.75 g L-1 h(-1)), respectively, were achieved. Based on these results, utilization of complex sources of sucrose, derived from agro-industries, as nutritional supplementation for xylitol production can be proposed as a strategy for improving the yeast performance and reducing the cost of this bioprocess by replacing more expensive nutrients. (C) 2015 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据