Keywords
Vítis vinifera L.
yeasts
Hanseniaspora
São Francisco submid valley
How to Cite
Abstract
The São Francisco Submid Valley is located in Bahia and Pernambuco states, and it is one of most promising regions for wine production in Brazil. It is still unknown the capability of this region in producing wine by spontaneous fermentation, and generating a product with typical regional characteristics. This study aimed at isolating and identifying the yeasts contaminating the peel of grapes Vitis vinifera L. cultivated in the Valley of the São Francisco Submid, Brazil. The isolates were identified based on morpho-physiological characteristics, growth ability in culture medium L-lysine agar, and biochemical identification by means of physiological tests (glucose fermentation ability, assimilation of carbon and nitrogen sources, osmotolerance and thermotolerance). Sixty yeasts isolates were detected on yeast extract-malt extract (YM) agar, and all of them belonged to non-Saccharomyces group. Physiological tests showed that 20 of 60 isolates did not grouped into any genera; and 40 isolates were suggestively identified as belonging to Hanseniaspora spp. Of 40 isolates, 17 were suggestively classified into Hanseniaspora guilliermondi species. The microbiota found on the grapes peel, grown in this region, is predominantly non-Saccharomyces yeasts, specifically Hanseniaspora spp.References
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Copyright (c) 2012 Instituto Adolfo Lutz Journal
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