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Modeling the interactions among Salmonella enteritidis, Pseudomonas aeruginosa, and Lactobacillus plantarum
Journal of Food Safety ( IF 1.9 ) Pub Date : 2020-04-23 , DOI: 10.1111/jfs.12811
Yuanmei Chen 1 , Xiang Wang 1 , Xibin Zhang 2, 3 , Dongpo Xu 1 , Wenmin Zhang 1 , Jingxuan Qiu 1 , Qing Liu 1 , Qingli Dong 1
Affiliation  

This paper was to investigate the interactions among Salmonella enteritidis, Lactobacillus plantarum, and Pseudomonas aeruginosa at four combinations of initial concentration. Firstly, fitting the growth curves to obtain growth parameters—lag time (λ), maximal growth rate ( μmax), initial concentration (N0), and maximum population density (Nmax) for each strain in monocultures or cocultures. Then interactions among S. enteritidis, P. aeruginosa, and L. plantarum in cocultures at four combinations of initial concentration were quantified by the Lotka–Volterra model with six interaction coefficients. Results indicated that there were no interactions between S. enteritidis and P. aeruginosa; S. enteritidis and P. aeruginosa had an inhibitory effect on L. plantarum, but L. plantarum had no effects on another two. Besides, the higher the initial concentrations of S. enteritidis or P. aeruginosa, the lower the growth potential of L. plantarum. This study provided more accurate predictions for the growth of bacteria under actual food contamination conditions.

中文翻译:

模拟肠炎沙门氏菌,铜绿假单胞菌和植物乳杆菌之间的相互作用

本文旨在研究四种初始浓度的肠炎沙门氏菌植物乳杆菌铜绿假单胞菌之间的相互作用。首先,拟合生长曲线,以获得生长参数滞后时间(λ),最大生长速率(μ最大),初始浓度(Ñ 0)和最大的人口密度(ñ最大值为在单一培养或共培养物中的每个应变)。然后之间的相互作用S.肠炎,铜绿假单胞菌,和植物乳杆菌 通过Lotka-Volterra模型用六个相互作用系数对共培养物中初始浓度的四种组合的浓度进行了定量。结果表明,有之间没有相互作用S.肠炎和铜绿假单胞菌; S.肠炎和铜绿假单胞菌对抑制作用植物乳杆菌,但是植物乳杆菌对另外两个没有影响。此外,较高的初始浓度S.肠炎或铜绿假单胞菌,该降低的生长潜力的植物乳杆菌。这项研究为实际食品污染条件下细菌的生长提供了更准确的预测。
更新日期:2020-04-23
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