Lactic acid production on a combined distillery stillage and sugar beet molasses substrate

被引：17
作者：
Mladenovic, Dragana D. [1 ]
Djukic-Vukovic, Aleksandra P. [1 ]
Kocic-Tanackov, Suncica D. [2 ]
Pejin, Jelena D. [2 ]
Mojovic, Ljiljana V. [1 ]
机构：
[1] Univ Belgrade, Fac Technol & Met, Karnegijeva 4, Belgrade 11000, Serbia
[2] Univ Novi Sad, Fac Technol, Bulevar Cara Lazara 1, Novi Sad 21000, Serbia
来源：
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY | 2016年 / 91卷 / 09期
关键词：
lactic acid; fermentation; distillery stillage; sugar beet molasses; Lactobacillus paracasei; OPEN FERMENTATIVE PRODUCTION; CANNED PINEAPPLE SYRUP; SWEET SORGHUM JUICE; BIOETHANOL PRODUCTION; EFFICIENT PRODUCTION; WASTE; BATCH;
D O I：
10.1002/jctb.4838
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：
BACKGROUNDUtilization of wastes and industrial by-products for production of valuable bio-based chemicals has economic and environmental advantages. The aim of this study was to investigate utilization of two industrial by-products, distillery stillage and sugar beet molasses combined as a substrate for lactic acid and biomass production. A selection of the most appropriate lactic acid bacteria that could effectively utilize this waste substrate was performed. In addition, the effect of initial sugar concentration on lactic acid production and growth of lactic acid bacteria on the combined waste substrate was evaluated. RESULTSLactobacillus paracaseiNRRL B-4564 was selected as the most promising for lactic acid production on distillery stillage and sugar beet molasses. The highest lactic acid productivity of 1.42 g L-1 h(-1) and yield of 0.91 g g(-1) were achieved on stillage/molasses media at initial sugar concentration of 56.74 g L-1. The highest number of L. paracasei cells at 5.3 x 10(9) CFU mL(-1) was achieved at initial sugar concentration of 78.22 g L-1. CONCLUSIONCombined distillery stillage and sugar beet molasses could provide valuable nutrients for growth of fastidious lactic acid bacteria and enable efficient lactic acid production, while processing industrial waste in this way has great environmental relevance. (c) 2015 Society of Chemical Industry
引用
收藏
页码：2474 / 2479
页数：6
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