文献类型：期刊文献

英文题名：Bioethanol production using genetically modified and mutant wheat and barley straws

作者：Li, Zhimin[1,4];Liu, Yan[3];Liao, Wei[3];Chen, Shulin[1];Zemetra, Robert S.[2]

机构：[1]Washington State Univ, Dept Biol Syst Engn, Pullman, WA 99163 USA;[2]Univ Idaho, Moscow, ID 83844 USA;[3]Michigan State Univ, E Lansing, MI 48824 USA;[4]E China Univ Sci & Technol, State Key Lab Bioreactor Engn, Shanghai 200237, Peoples R China

年份：2011

卷号：35

期号：1

起止页码：542

外文期刊名：BIOMASS & BIOENERGY

收录：;EI(收录号：20105213531892);WOS:【SCI-EXPANDED(收录号:WOS:000286905300060)】；

基金：This project was financially supported by United State Department of Agriculture through contract number 67-3A75-5-22.

语种：英文

外文关键词：Transgenic straw; Triticum aestivum; Hordeum vulgare; Ethanol; Hydrolysis; SSF

摘要：To improve the performance of wheat and barley straws as feedstocks for ethanol biorefining, the genetic modifications of down regulating Cinnamoyl-CoA reductase and low phytic acid mutation have been introduced into wheat and barley respectively. In this study, total 252 straw samples with different genetic background and location were collected from the field experiment based on a randomized complete block design. The fiber analysis (neutral detergent fiber, acid detergent fiber, and acid detergent lignin) indicated that there were no significant differences between modified and wild type straw lines in terms of straw compositions. However, the difference did exist among straw lines on fiber utilization. 16 straw samples were further selected to conduct diluted acid pretreatment, enzymatic hydrolysis and fermentation. The data indicated that the phytic acid mutant and transgenic straws have changed the fiber structure, which significantly influences their hydrolysibility. These results may lead to a possible solution of mutant or genetic modified plant species that is capable to increase the hydrolysibility of biomass without changing their compositions and sacrificing their agronomy performance. (C) 2010 Elsevier Ltd. All rights reserved.