Changes in nutrient consumption patterns of Lactobacillus fermentum mediated by sodium lactate

Autor: Kenan Zhang, Zongcai Zhang, Xiaoxue Guo, Ruijia Guo, Lin Zhu, Xinrong Qiu, Xiaohan Yu, Jun Chai, Chunhe Gu, Zhen Feng
Rok vydání: 2022
Předmět:
Zdroj: Journal of the Science of Food and Agriculture. 103:1775-1783
ISSN: 1097-0010
0022-5142
DOI: 10.1002/jsfa.12295
Popis: During high-cell-density culture of Lactobacillus fermentum, the optimal pH is often maintained by adding NaOH. During cultivation at controlled pH, L. fermentum experiences osmotic stress due to the continuous accumulation of sodium lactate as a neutralizer product, affecting its survival in subsequent processing. The purpose of this study was to evaluate the nutrient consumption patterns of L. fermentum ATCC 14931 under sodium lactate stress and to screen nutrients that help it resist osmotic stress.The consumption and consumption rates of amino acids, purines, pyrimidines, vitamins, and metal ions were analyzed in chemically defined media containing 0.13, 0.31, or 0.62 mm LThe present results suggest that certain nutrients accelerate the growth of L. fermentum under sodium lactate stress and enhance its resistance to this adverse condition. © 2022 Society of Chemical Industry.
Databáze: OpenAIRE
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