预处理玉米秸秆中抑制物对酵母发酵影响研究  

Effect of Inhibitors in Pretreated Corn Stalk on Ethanol Fermentation by Saccharomyces Cerevisiae

作　　者：韩伟[1,2] 张全[2] 唐开宇[2] 佟明友[2] 姚秀清[1] 

机构地区：[1]辽宁石油化工大学环境与生物工程学院 [2]抚顺石油化工研究院生物化工部,抚顺113001

出　　处：《科学技术与工程》2013年第30期9099-9101,9113,共4页Science Technology and Engineering

摘　　要：玉米秸秆在预处理过程中会生成酵母抑制物,不利于发酵产乙醇。考察了七种模型抑制物对酵母菌发酵乙醇的影响,并考察了高干固浓度预处理玉米秸秆(PCS)酶解液对酵母发酵乙醇的抑制作用。得到:对酿酒酵母FE-B抑制作用由强到弱为苯系化合物>呋喃衍生物>弱酸类;干固浓度(TS)高于29.4%时,其中抑制物对酵母抑制非常严重。Inhibitors are produced during pretreatment of corn stalk,which is limited to ethanol product.The effect of seven model inhibitors on ethanol production using cerevisiae was researched.The inhibition on saccharomyces cerevisiae fermentation using enzymatic hydrolysate of pretreated corn stalk with high total solids content was also studied.Benzene hydrocarbons inhibit saccharomyces cerevisiae more seriously than furan derivatives and weak acids respectively.Saccharomyces cerevisiae was seriously inhibited when total solids content was higher than 29.4％.

关 键 词：预处理 纤维乙醇 糖化发酵 抑制物 

分 类 号：TQ920.4[轻工技术与工程—发酵工程] Q815[生物学—生物工程]