Diversity of Mycobiota in Spanish Grape Berries and Selection of Hanseniaspora uvarum U1 to Prevent Mycotoxin Contamination

The occurrence of mycotoxins on grapes poses a high risk for food safety; thus, it is necessary to implement effective prevention methods. In this work, a metagenomic approach revealed the presence of important mycotoxigenic fungi in grape berries, including , aggregate species, or section . However...

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Bibliographic Details
Published in:Toxins 2021-09, Vol.13 (9), p.649
Main Authors: Gómez-Albarrán, Carolina, Melguizo, Clara, Patiño, Belén, Vázquez, Covadonga, Gil-Serna, Jéssica
Format: Article
Language:English
Subjects:
Aflatoxin B1
Aflatoxins
Aspergillus
Bacteria
Berries
Biological control
Cell walls
detoxification
Food contamination
Food contamination & poisoning
Food Microbiology
Food safety
Fruit - microbiology
Fruits
Fungi
Grapes
Growth rate
Hanseniaspora - physiology
Hanseniaspora uvarum
Metagenomics
Microbiota
Microorganisms
Mycobiome
Mycotoxins
Mycotoxins - analysis
Ochratoxin A
Spain
Vitaceae
Vitis - microbiology
Wineries & vineyards
Yeasts
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Summary:The occurrence of mycotoxins on grapes poses a high risk for food safety; thus, it is necessary to implement effective prevention methods. In this work, a metagenomic approach revealed the presence of important mycotoxigenic fungi in grape berries, including , aggregate species, or section . However, was not detected in any sample. One of the samples was not contaminated by any mycotoxigenic species, and, therefore, it was selected for the isolation of potential biocontrol agents. In this context, U1 was selected for biocontrol in vitro assays. The results showed that this yeast is able to reduce the growth rate of the main ochratoxigenic and aflatoxigenic spp. occurring on grapes. Moreover, U1 seems to be an effective detoxifying agent for aflatoxin B and ochratoxin A, probably mediated by the mechanisms of adsorption to the cell wall and other active mechanisms. Therefore, U1 should be considered in an integrated approach to preventing AFB and OTA in grapes due to its potential as a biocontrol and detoxifying agent.
ISSN:2072-6651
2072-6651
DOI:10.3390/toxins13090649