Selection of batch process conditions for microbiological production of lactic acid using waste whey

IF 0.5 4区工程技术 Q4 ENGINEERING, CHEMICAL

Chemical and Process Engineering-Inzynieria Chemiczna I Procesowa Pub Date : 2023-11-06 DOI:10.24425/CPE.2019.126101

M. Lech, Anna Trusek

引用次数: 0

Abstract

The research was focused on the selection of the best conditions for the lactic acid production. As the organic source diluted waste whey was used. Two facultative anaerobic bacteria strains were examined: Lactobacillus rhamnosus and Lactococcus lactis. The neeed of anaerobic conditions as well as mineral supplementation of cultivation were investigated. It turned out that the oxidation was not the key parameter, but cultivation medium needed a supplementation for higher process efficiency. Finally, Lactobacillus rhamnosus strain was selected, for which LA production was app. 45% higher than for Lc. lactis. On the other hand, Lactobacillus rhamnosus was active at higher lactose concentration, thus waste whey needed to be less diluted. Additionally, high values of product/substrate yield coefficient make the process very efficient.

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废乳清微生物生产乳酸间歇工艺条件的选择

重点研究了乳酸生产的最佳条件选择。利用稀释后的废乳清作为有机源。研究了两株兼性厌氧细菌:鼠李糖乳杆菌和乳酸乳球菌。研究了厌氧条件的需要以及培养过程中矿物质的补充。结果表明，氧化不是关键参数，需要补充培养基以提高工艺效率。最终选择鼠李糖乳杆菌菌株，其LA产量比Lc高45%左右。lactis。另一方面，鼠李糖乳杆菌在较高的乳糖浓度下具有活性，因此废物乳清需要较少的稀释。此外，产品/衬底屈服系数的高值使该工艺非常有效。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Chemical and Process Engineering-Inzynieria Chemiczna I Procesowa 工程技术-工程：化工

CiteScore

1.30

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： The content, aim and scope of the proposals should comply with the main subject of the journal, i.e. they should deal with mathematical modelling and/or experimental investigations on momentum, heat and mass transfer, unit processes and operations, integrated processes, biochemical engineering, statics and kinetics of chemical reactions. The experiments and modelling may cover different scales and processes ranging from the molecular phenomena up to production systems. The journal language is grammatically correct British English. Chemical and Process Engineering publishes: i) full text research articles, ii) invited reviews, iii) letters to the editor and iv) short communications, aiming at important new results and/or applications. Each of the publication form is peer-reviewed by at least two independent referees.