Growth kinetics of Lactococcus lactis and Lactobacillus casei in liquid culture medium containing as prebiotics inulin or fructose

菊粉 Gompertz函数 果糖 干酪乳杆菌 乳酸乳球菌 食品科学 化学 生物量(生态学) 细菌生长 动力学 动物科学 色谱法 生物 细菌 数学 物理 乳酸 生态学 统计 发酵 量子力学 遗传学
作者
Yessenia Maribel García Montes,Edwin Rafael Vera Calle,Stalin Santacruz,Marlon Reinaldo Castro-García,Jenny Cumandá Ruales Nájera,Mario René López Vera
出处
期刊:Journal of the Science of Food and Agriculture [Wiley]
卷期号:104 (3): 1258-1270
标识
DOI:10.1002/jsfa.13032
摘要

Abstract BACKGROUND Predictive microbiology is a tool that allows us to evaluate the behavior of the concentration of biomass and estimated cells under extrinsic conditions, providing scientific and industrial benefits. In the present study, the growth of L. lactis and L. casei combined with inulin and fructose was modeled using the Gompertz sigmoidal growth functions and plotted using data obtained from batch culture in relation to biomass and cell concentration expressed as estimates in ln N (OD 600nm and cells mL −1 ) as a function of time. RESULTS The results of the kinetic modeling indicated that (T1) A1B1 = L. lactis + fructose and (T4) A2B2 = L. casei + inulin presented the best function coefficients and best fits in most cases compared to the rest. The specific growth rate of the maximum acceleration was from 0.364 to 0.473 h −1 and 0.100 to 0.129 h −1 , the concentration of bacterial cells ( A ) was from 0.556 to 0.713 and 0.425 to 0.548 respectively and the time where ( μ ) occurred with a greater magnitude ( L ) fluctuated between 0.854 and 0.802 and when this time in ( L ) is very fast, it presents values of ≤0.072 to ≤0.092. Its coefficient of determination and/or multiple regression ( R 2 ) obtained in the two adjustments was 0.97. CONCLUSION It was possible to predict the influence of the carbon source on the behavior of maximum growth rates, higher consumption due to nutrient affinity and shorter growth time. © 2023 Society of Chemical Industry.
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