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Article

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

Department of Genetics, Physiology and Microbiology, Faculty of Biology, University Complutense of Madrid, Jose Antonio Novais 12, 28040 Madrid, Spain
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Author to whom correspondence should be addressed.
Toxins 2021, 13(9), 649; https://doi.org/10.3390/toxins13090649
Received: 12 July 2021 / Revised: 10 September 2021 / Accepted: 11 September 2021 / Published: 13 September 2021
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 Aspergillus flavus, Aspergillus niger aggregate species, or Aspergillus section Circumdati. However, A. carbonarius 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, Hanseniaspora uvarum 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 Aspergillus spp. occurring on grapes. Moreover, H. uvarum U1 seems to be an effective detoxifying agent for aflatoxin B1 and ochratoxin A, probably mediated by the mechanisms of adsorption to the cell wall and other active mechanisms. Therefore, H. uvarum U1 should be considered in an integrated approach to preventing AFB1 and OTA in grapes due to its potential as a biocontrol and detoxifying agent. View Full-Text
Keywords: metagenomics; biological control; Hanseniaspora uvarum; detoxification; aflatoxin B1; ochratoxin A metagenomics; biological control; Hanseniaspora uvarum; detoxification; aflatoxin B1; ochratoxin A
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MDPI and ACS Style

Gómez-Albarrán, C.; Melguizo, C.; Patiño, B.; Vázquez, C.; Gil-Serna, J. Diversity of Mycobiota in Spanish Grape Berries and Selection of Hanseniaspora uvarum U1 to Prevent Mycotoxin Contamination. Toxins 2021, 13, 649. https://doi.org/10.3390/toxins13090649

AMA Style

Gómez-Albarrán C, Melguizo C, Patiño B, Vázquez C, Gil-Serna J. Diversity of Mycobiota in Spanish Grape Berries and Selection of Hanseniaspora uvarum U1 to Prevent Mycotoxin Contamination. Toxins. 2021; 13(9):649. https://doi.org/10.3390/toxins13090649

Chicago/Turabian Style

Gómez-Albarrán, Carolina, Clara Melguizo, Belén Patiño, Covadonga Vázquez, and Jéssica Gil-Serna. 2021. "Diversity of Mycobiota in Spanish Grape Berries and Selection of Hanseniaspora uvarum U1 to Prevent Mycotoxin Contamination" Toxins 13, no. 9: 649. https://doi.org/10.3390/toxins13090649

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