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Effect of saccharomycin, a natural Saccharomyces cerevisiae biocide, on Hanseniaspora guilliermondii cells surface
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Resumo(s)
ABSTRACT: During spontaneous wine fermentations, most of the non-Saccharomyces yeasts present in grape musts show an early decline in their population. It was traditionally assumed that Saccharomyces cerevisiae (S.c.) prevalence was due to the higher resistance of this species to ethanol. However, wine fermentations performed with single cultures of non-Saccharomyces strains showed that those strains could withstand much higher ethanol levels [1]. It was then found that S.c. (strain CCMI 885) produced antimicrobial peptides (AMPs) that are responsible for the early death of the non Saccharomyces yeasts [2]. In previous work, we isolated, purified and sequenced those ntimicrobial peptides (AMPs) and found that they derive from the glyceraldehyde 3-phosphate dehydrogenase enzyme [3]. These GAPDH-derived AMPs compose the natural biocide secreted by S.c., which we named saccharomycin, and are effective against sensitive yeasts both in its natural/isolated and synthetic form.
Descrição
Palavras-chave
Saccharomyces cerevisiae Wine fermentations Alcoholic fermentation Yeasts
Contexto Educativo
Citação
Calvário, Joana... [et.al.] - Effect of saccharomycin, a natural Saccharomyces cerevisiae biocide, on Hanseniaspora guilliermondii cells surface. In: Annals of Medicine, 2021, Vol. 53, Supplement 1, Special Issue, p. S12-S13
Editora
Taylor & Francis