title: The preparation and ethanol fermentation of high-concentration sugars from steam-explosion corn stover.
abstract: In the field of biofuel ethanol, high-concentration- reducing sugars made from cellulosic materials lay the foundation for high-concentration ethanol fermentation. In this study, corn stover was pre-treated in a process combining chemical methods and steam explosion; the cellulosic hydrolyzed sugars obtained by fed-batch saccharification were then used as the carbon source for high-concentration ethanol fermentation. Saccharomyces cerevisiae 1308, Angel yeast, and Issatchenkia orientalis were shake-cultured with Pachysolen tannophilus P-01 for fermentation. Results implied that the ethanol yields from the three types of mixed strains were 4.85 g/100 mL, 4.57 g/100 mL, and 5.02 g/100 mL (separately) at yield rates of 91.6, 89.3, and 92.2%, respectively. Therefore, it was inferred that shock-fermentation using mixed strains achieved a higher ethanol yield at a greater rate in a shorter fermentation period. This study provided a theoretical basis and technical guidance for the fermentation of industrial high-concentrated cellulosic ethanol.
authors: Key Laboratory of Enzyme Engineering of Agricultural Microbiology, Ministry of Agriculture, College of Life Science, Henan Agricultural University, Nongye Road No. 63, Zhengzhou, 450002, China.
authors: Hui
authors: H
authors: Xie
authors: Fengqin
authors: F
authors: Wang
authors: Shuangyao
authors: S
authors: Yin
authors: Tianbao
authors: T
authors: Ren
authors: Andong
authors: A
authors: Song
mesh_terms: D002482:Cellulose / Q000737:chemistry* / Q000378:metabolism*; D000431:Ethanol / Q000378:metabolism*; D012441:Saccharomyces cerevisiae / Q000254:growth & development*; D013227:Steam; D003313:Zea mays / Q000737:chemistry*
chemical_list: D013227:Steam; D000431:Ethanol; D002482:Cellulose