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海藻酸锰固定化细胞的乙醇发酵(PDF)

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

Issue:
2003年04期
Page:
1-4
Column:
研究论文
publishdate:
1900-01-01

Article Info:/Info

Title:
Fermentation of Ethanol by Immobilized Cells of Manganese Alginate
Article ID:
1000-2006(2003)04-0001-04
Author(s):
SONG Xiangyang1XU Yong1YANG Fuguo2YONG Qiang1YU Shiyuan1
1.Nanjing Forestry University,Nanjing 210037,China;2.Central SouthUniversity,Changsha 410083,China
Keywords:
Pichia stipitisManganese alginateImmobilized cellsXyloseEthanol
Classification number :
Q53
DOI:
10.3969/j.jssn.1000-2006.2003.04.001
Document Code:
A
Abstract:
The life time of immobilized Pichia stipitis yeast cells was prolonged greatly when the gel was formed with manganese alginate compared to that with calcium alginate.The ability of enduring phosphate of manganese alginate gel was increased 3 times than that of calcium alginate gel.Fermentation of glucosexylose mixture to ethanol was investigated in 250 mL shakeflask at 35 ℃,pH 5.0 and 150 r/min.Glucosexylose mixture could be cofermented to ethanol by immobilized Pichia stipitis yeast cells of manganese alginate.The results showed that immobilized cells of manganese alginate gel were still definite when fermentation of ethanol lasted 42 d,and utilization ratio of total sugar was 95.8%,yield of ethanol reached 92.3% of theoretical.While fermentation of ethanol by immobilized Pichia stipitis yeast cells of aluminum alginate only lasted 24 d.It provided the basis of theory for producing ethanol with immobilized cells in industry.

References

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Last Update: 1900-01-01