期刊
APPLIED ENERGY
卷 129, 期 -, 页码 89-93出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.apenergy.2014.04.098
关键词
Lactate oxidase; Lactic acid; Food waste; Pyruvate; Ethanol fermentation
资金
- International Science & Technology Cooperation Program of China [2013DFG92600]
- National Scientific Funding of China [51008020, 51378003]
- Beijing Higher Education Young Elite Teacher Project
- Beijing Nova Program [Z111106054511043]
Adoption of lactic acid bacteria (LAB) into ethanol fermentation from food waste can replace the sterilization process. However, LAB inoculation will convert part of the substrate into lactic acid (LA), not ethanol. This study adopted lactate oxidase to convert the produced LA to pyruvate, and then ethanol fermentation was carried out. The immobilization enzyme was utilized, and corresponding optimum conditions were determined. Results showed that calcium alginate could successfully immobilize the enzyme and improve pH and thermal stability. The optimum pH and temperature were 6.2 and 55 degrees C, respectively. The utilization of immobilized enzyme with catalytic time of 5 h could convert 70% LA to pyruvate, and the addition of enzyme increased the ethanol yield by 20% more than that of the control. The process could be applied in food waste storage and can help in reducing carbon source consumption. (C) 2014 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据