A review on preparation and chemical analysis of postbiotics from lactic acid bacteria

• Published in: Enzyme and microbial technology Vol. 143; p. 109722
• Main Authors: Moradi, Mehran, Molaei, Rahim, Guimarães, Jonas T.
• Format: Journal Article
• Language: English
• Published: United States Elsevier Inc 01.02.2021
• Subjects: Bioactive compounds; Cell free supernatant; chemical analysis; chemical composition; digestive system; enzymes; fermentation; food safety; Functional food; lactic acid; Lactobacillus; metabolites; molecular weight; Probiotics; Kl; B; Leuc; E; Salm; Cl; EPS; Ent; L; MRS; CFS; Bioactive compounds; Lb; Lactobacillus; AA; Ps; Cell free supernatant; BLIS; LAB; Ped; Lac; Probiotics; Strep; GRAS; Staph; Functional food
• ISSN: 0141-0229; 1879-0909; 1879-0909
• DOI: 10.1016/j.enzmictec.2020.109722

•Postbiotics are a mixture of microbial-derived substances with diverse functions.•Postbiotics are produced by different food-grade microorganisms including lactic acid bacteria.•The type of instrumental technique impresses the chemical composition of postbiotics.•Any modification in culturing methods could also affect the chemical composition of postbiotics. Postbiotics may be defined as soluble metabolites released by food-grade microorganisms during the growth and fermentation in complex microbiological culture, food or gut. It is rich in high and low molecular weight biologically active metabolites. There are still gaps concerning these substances, mainly how to use them for food applications. Although the most recent work on preparation and application of postbiotics from several probiotics are very encouraging, the suitability of postbiotics to combat microorganisms that deal with food safety should be tested mainly by analyzing the chemical composition and conducting antagonistic tests. Consequently, foods can effectively benefit from an identified postbiotic with a defined effect. This review approached the recent advances in relation to the preparation of postbiotics from lactic acid bacteria. The function of different instrumental analysis techniques and factors affecting the chemical composition of postbiotics were also comprehensively reviewed.