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分批添料对戊糖、己糖同步发酵制备乙醇的影响

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2008年06期
Page:
9-12
Column:
研究论文
publishdate:
2008-11-30

Article Info:/Info

Title:
Influence of fedbatch for fermentation of pentose and hexose to ethanol
Article ID:
1000-2006(2008)06-0009-04
Author(s):
SONG Xiang-yang LI Xin MAO Lian-shanYUN Cai-qinYONG QiangYU Shi-yuan
Key Laboratory of Forest Genetic & Biotechnology Ministry of Education Nanjing Forestry Universitl, Nanjing 210037, China
Keywords:
Fedbatch Pichia stipitis Pentose and hexose Fermentation Yield of ethanol
Classification number :
Q53
DOI:
10.3969/j.jssn.1000-2006.2008.06.003
Document Code:
A
Abstract:
Fermentation of glucose-xylose mixture to ethanol was investigated with Pichia stipitis. The fedbatch was used to increase the useful yield of sugar and rate of ethanol. The results showed that the best conclusion was the initial content of sugar at 94.0 g/L. Then it produced the concentration of ethanol 33.9 g/L for once adding. Prolonging the fermentation for once adding could decrease the residual concentration of sugar and increase the concentration of ethanol. But the less change of sugar, the more concentration of ethanol. The residual concentration of sugar was 9.1 g/L and the concentration of ethanol was 34.3 g/L after the fermentation at the initial sugar concentration of 108.0 g/L for 31 h . The residual sugar was 0.4 g/L and the concentration of ethanol was 37.0 g/L after fermentation for 42 h. To finish adding sugar in 12 h and it was fit for adding sugar twice at the total sugar concentration of 80.9 g/L. And the concentration of ethanol was 33.8 g/L after fermentation for 24 h.

References

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Last Update: 2013-05-20