Enhancement of L-lactic acid production via synergism in open co-fermentation of Sophora flavescens residues and food waste

被引：40
|
作者：
Zheng, Jin [1 ,2 ]
Gao, Ming [1 ,2 ]
Wang, Qunhui [1 ,2 ]
Wang, Juan [1 ]
Sun, Xiaohong [3 ]
Chang, Qiang [1 ]
Tashiro, Yukihiro [4 ,5 ]
机构：
[1] Univ Sci & Technol Beijing, Sch Civil & Environm Engn, Dept Environm Engn, 30 Xueyuan Rd, Beijing 10083, Peoples R China
[2] Univ Sci & Technol Beijing, Beijing Key Lab Resource Oriented Treatment Ind P, 30 Xueyuan Rd, Beijing 10083, Peoples R China
[3] Beijing Acad Agr & Forestry Sci, 11 Shuguang Garden Rd, Beijing 100097, Peoples R China
[4] Kyushu Univ, Ctr Int Educ & Res Agr, Lab Microbial Environm Protect, Trop Microbiol Unit,Fac Agr,Higashi Ku, 6-10-1 Hakozaki, Fukuoka 8128581, Japan
[5] Kyushu Univ, Dept Funct Metab Design, Lab Funct Food Design, Bioarchitecture Ctr,Higashi Ku, 6-10-1 Hakozaki, Fukuoka 8128581, Japan
来源：
BIORESOURCE TECHNOLOGY | 2017年 / 225卷
基金：
中国博士后科学基金;
关键词：
Sophora flavescens residue; Food waste; Co-fermentation; L-Lactic acid production; Synergism; DISTILLERS GRAINS; BIOGAS PRODUCTION; DIGESTION; PREFERMENTATION; TEMPERATURE; BACTERIA; ETHANOL; SLUDGE; YIELD; RATIO;
D O I：
10.1016/j.biortech.2016.11.055
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
In this study, Sophora flavescens residues (SFR) were used for L-lactic acid production and were mixed with food waste (FW) to assess the effects of different compositions of SFR and FW. Positive synergistic effects of mixed substrates were achieved with co-fermentation. Co-fermentation increased the proportion of L-lactic acid by decreasing the co-products of ethanol and other organic acids. A maximum L-lactic acid concentration of 48.4 g/L and L-lactic acid conversion rate of 0.904 g/g total sugar were obtained through co-fermentation of SFR and FW at the optimal ratio of 1:1.5. These results were approximately 6-fold those obtained during mono-fermentation of SFR. Co-fermentation of SFR and FW provides a suitable C/N ratio and pH for effective open fermentative production of L-lactic acid. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：159 / 164
页数：6
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