What benefits of Hanseniaspora uvarum have been cited in the scientific literature?
Peer-reviewed literature on Hanseniaspora uvarum documents eight cited benefits spanning postharvest disease suppression, mycotoxin management, and plant growth promotion — the categories formulators and regulatory reviewers most often examine when evaluating this yeast as a biocontrol input.
For postharvest disease, research reports H. uvarum reduces Botrytis cinerea grey mould on grapes (efficacy further improved with tea polyphenol), inhibits Penicillium expansum across more than 30 isolates on apple, suppresses Phytophthora nicotianae tomato rot by up to 95.8% through volatile organic compounds (VOCs, principally ethyl acetate), and reduces Penicillium glabrum incidence on wounded grapes in vivo.
Mycotoxin-related findings include reported inhibition of Aspergillus flavus and reduced aflatoxin accumulation via VOC production, and detoxification of aflatoxin B1 and ochratoxin A on grapes — possibly through cell wall adsorption — alongside reduced growth of ochratoxigenic and aflatoxigenic Aspergillus strains cited in peer-reviewed research.
1Potential claims from the literature
Reported to reduce grey mould (Botrytis cinerea) infection in grapes, with efficacy further improved when combined with tea polyphenol
Reported to reduce apple disease progression caused by Penicillium expansum in vivo, with consistent inhibition observed across more than 30 H. uvarum isolates
Reported to reduce postharvest fruit rot in tomato caused by Phytophthora nicotianae by up to 95.8% via volatile organic compounds (VOCs), with ethyl acetate identified as the major active component
Reported to inhibit the growth of Aspergillus flavus and reduce aflatoxin accumulation through production of volatile organic compounds (VOCs)
Reported to reduce the growth rate of ochratoxigenic and aflatoxigenic Aspergillus spp. on grapes, and to act as a detoxifying agent for aflatoxin B1 and ochratoxin A, potentially via cell wall adsorption and other active mechanisms
Reported to significantly reduce the incidence of Penicillium glabrum on wounded grapes in vivo
Reported to produce indole-3-acetic acid (IAA), a phytohormone associated with plant growth promotion
Reported to exhibit enhanced biocontrol efficacy when pre-treated with trehalose, associated with up-regulation of defense-related proteins (peroxiredoxin TSA1, superoxide dismutase) and increased peroxidase activity, as well as a 2.5-fold increase in stilbene synthase (StSy) gene expression in treated grapes
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