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Effect of simulated acidic and salty fermentation conditions on kinetic growth parameters and probiotic potential of Lactobacillus acidipiscis and Lactobacillus pentosus
Author(s) -
Benavente Beltrán Francisco Javier,
Morales Barrera Liliana,
GonzálezGonzález Cid Ramón,
Andrade Velasquez Amaury,
MelgarLalanne Guiomar
Publication year - 2021
Publication title -
international journal of food science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.831
H-Index - 96
eISSN - 1365-2621
pISSN - 0950-5423
DOI - 10.1111/ijfs.14871
Subject(s) - gompertz function , food science , lactobacillus , probiotic , chemistry , fermentation , bacterial growth , bacteria , biology , mathematics , statistics , genetics
Summary The technological stress during food processing may alter the beneficial interactions of food‐associated Lactobacillus on the host. The effect of initial combined acidic (pH 5.0) and osmotic stress (NaCl 5 %, w/v with or without CaCl 2 0.02 %, w/v) typically present in vegetable fermentations and cheesemaking were investigated. The growth kinetics prediction, hydrophobicity, auto‐aggregation, in vitro survival and adhesion were determined in Lactobacillus acidipiscis and Lactobacillus pentosus isolated from a Mexican salty cheese. The growth was modelled with the modified Gompertz equation ( R > 0.99; RMSE < 0.01). The lag phase increased (>10 h), and auto‐aggregation was reduced. Hydrophobicity and S‐layer total proteins varied. Gut survival reduced >4 log 10 units compared to the initial intake. Nevertheless, adhesion remained the same. Hence, combined stress affected the technological and physiological properties of both strains negatively. Further research is needed to identify the effect of the combined stress on the potential bioactivity of the strains.