The interactions among isolates of Lactiplantibacillus plantarum and dairy yeast contaminants: towards biocontrol applications.

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26722861%3A_____%2F22%3AN0000077" target="_blank" >RIV/26722861:_____/22:N0000077 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

The interactions among isolates of Lactiplantibacillus plantarum and dairy yeast contaminants: towards biocontrol applications.

Original language description

Yeast diversity in the cheese manufacturing process and in the cheeses themselves includes indispensable species for the production of specific cheeses and undesired species that cause cheese defects and spoilage. The control of yeast contaminants is problematic due to limitations in sanitation methods and chemicals used in the food industry. The utilisation of lactic acid bacteria and their antifungal products is intensively studied. Lactiplantibacillus plantarum is one of the most frequently studied species producing a wide spectrum of bioactive by-products. In the present study, twenty strains of L. plantarum from four sources were tested against 25 species of yeast isolated from cheeses, brines, and dairy environments. The functional traits of L. plantarum strains, such as the presence of class 2a bacteriocin and chitinase genes and in vitro production of organic acids, were evaluated. The extracellular production of bioactive peptides and proteins was tested using proteomic methods. Antifungal activity against yeast was screened using in vitro tests. Testing of antifungal activity on artificial media and reconstituted milk showed significant variability within the strains of L. plantarum and its group of origin. Strains from sourdoughs (CCDM 3018, K19-3), raw cheese (L12, L24, L32) strongly inhibited the highest number of yeast strains on medium with reconstituted milk. These strains showed a consistent spectrum of genes belonging to class 2a bacteriocins, the gene of chitinase and its extracellular product 9 LACO Chitin-binding protein. Strain CCDM 3018 with the spectrum of class 2a bacteriocin gene, chitinase and significant production of lactic acid in all media performed significant antifungal effect in artificial and reconstituted milk-based media. Citation: Kavková M., Cihlář J., Dráb V., Bazalová O., Dlouhá Z.: The interactions among isolates of Lactiplantibacillus plantarum and dairy yeast contaminants: towards biocontrol applications. Others – PP presentations and collection of abstracts. Conference: ICFM 2022, Food Mycology – Taxonomy, Spoilage and Mycotoxins. Utrecht, The Netherlands, 17.–19. July 2022. In Abstract Book ICFM 2022, Food Mycology – Taxonomy, Spoilage and Mycotoxins, pp. 22.

Czech name

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Czech description

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Type

O - Miscellaneous

CEP classification

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OECD FORD branch

40401 - Agricultural biotechnology and food biotechnology

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2022

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů