THE EFFECTS OF PHOSPHORIC-ACID PRETREATMENT ON CONVERSION OF CELLULOSE TO ETHANOL AT 45-DEGREES-C USING THE THERMOTOLERANT YEAST KLUYVEROMYCES-MARXIANUS IMB3

被引：13

作者：

NILSSON, U ^{[1
]}

BARRON, N ^{[1
]}

MCHALE, L ^{[1
]}

MCHALE, AP ^{[1
]}

机构：

[1] UNIV ULSTER,SCH APPL BIOL & CHEM SCI,BIOTECHNOL RES GRP,COLERAINE BT52 1SA,LONDONDERRY,NORTH IRELAND

来源：

BIOTECHNOLOGY LETTERS | 1995年 / 17卷 / 09期

关键词：

D O I：

10.1007/BF00127439

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

Here we report on the effects of phosphoric acid pretreated cellulose as a substrate for ethanol production by K. marxianus IMB3 using simultaneous saccharification and fermentation systems at 45 degrees C. With untreated, milled filter paper as substrate the maximum amount of ethanol produced was 25% of the maximum theoretical yield. After pre-treatment with 100% phosphoric acid, the yield increased to 42% of the maximum theoretical yield. When untreated microcrystalline cellulose was used as the fermentation substrate, yields of ethanol as 45 degrees C amounted to 16% of the maximum theoretical yield whereas pretreatment of the substrate with phosphoric acid resulted in an increase in ethanol production to 69% of the maximum theoretical yield. This suggests that pretreatment of substrate with phosphoric acid would contribute to a reduction in the amount of exogenous enzyme needed.

引用

页码：985 / 988

页数：4

共 15 条

[1] ISOLATION OF THERMOTOLERANT, FERMENTATIVE YEASTS GROWING AT 52-DEGREES-C AND PRODUCING ETHANOL AT 45-DEGREES-C AND 50-DEGREES-C [J].