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Title: New lager brewery strains obtained by crossing techniques using cachaça (Brazilian Spirit) yeasts.
Authors: Figueiredo, Bruna Inez Carvalho de
Saraiva, Margarete Alice Fontes
Pimenta, Paloma Patrick de Souza
Testasicca, Miriam Conceição de Souza
Sampaio, Geraldo Magela Santos
Cunha, Aureliano Claret da
Afonso, Luís Carlos Crocco
Queiroz, Marisa Vieira de
Castro, Ieso de Miranda
Brandão, Rogélio Lopes
Keywords: Aroma volatile compounds
Mating type
Issue Date: 2017
Citation: FIGUEIREDO, B. I. C. et al. New lager brewery strains obtained by crossing techniques using cachaça (Brazilian Spirit) yeasts. Applied And Environmental Microbiology, v. 83, p. 1-17, 2017. Disponível em: <>. Acesso em: 05 abr. 2018.
Abstract: The development of hybrids has been an effective approach to generate novel yeast strains with optimal technological profile for use in beer production. This study describes the generation of a new yeast strain for lager beer production by direct mating between two Saccharomyces cerevisiae strains isolated from cachaça distilleries: one that was strongly flocculent, and the other with higher production of acetate esters. The first step in this procedure was to analyze the sporulation ability and reproductive cycle of strains belonging to a specific collection of yeasts isolated from cachaça fermentation vats. Most strains showed high rates of sporulation, spore viability, and homothallic behavior. In order to obtain new yeast strains with desirable properties useful for lager beer production, we compare haploid-to-haploid and diploid-to-diploid mating procedures. Moreover, an assessment of parental phenotype traits showed that the segregant diploid C2-1d generated from a diploid-to-diploid mating experiment showed good fermentation performance at low temperature, high flocculation capacity, and desirable production of acetate esters that was significantly better than that of one type lager strain. Therefore, strain C2-1d might be an important candidate for the production of lager beer, with distinct fruit traces and originating using a non-genetically modified organism (GMO) approach.
ISSN: 13652672
Appears in Collections:DEFAR - Artigos publicados em periódicos

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