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Inhibitor tolerance of a recombinant flocculating industrial Saccharomyces cerevisiae strain during glucose and xylose co-fermentation
Li, Yun-Cheng; Gou, Zi-Xi; Zhang, Ying; Xia, Zi-Yuan; Tang, Yue-Qin; Kida, Kenji.
Afiliação
  • Li, Yun-Cheng; Sichuan University. College of Architecture and Environment. Chengdu. CN
  • Gou, Zi-Xi; Sichuan University. College of Architecture and Environment. Chengdu. CN
  • Zhang, Ying; Sichuan University. College of Architecture and Environment. Chengdu. CN
  • Xia, Zi-Yuan; Sichuan University. College of Architecture and Environment. Chengdu. CN
  • Tang, Yue-Qin; Sichuan University. College of Architecture and Environment. Chengdu. CN
  • Kida, Kenji; Sichuan University. College of Architecture and Environment. Chengdu. CN
Braz. j. microbiol ; 48(4): 791-800, Oct.-Dec. 2017. graf
Artigo em Inglês | LILACS | ID: biblio-889166
Biblioteca responsável: BR1.1
ABSTRACT
ABSTRACT Lignocellulose-derived inhibitors have negative effects on the ethanol fermentation capacity of Saccharomyces cerevisiae. In this study, the effects of eight typical inhibitors, including weak acids, furans, and phenols, on glucose and xylose co-fermentation of the recombinant xylose-fermenting flocculating industrial S. cerevisiae strain NAPX37 were evaluated by batch fermentation. Inhibition on glucose fermentation, not that on xylose fermentation, correlated with delayed cell growth. The weak acids and the phenols showed additive effects. The effect of inhibitors on glucose fermentation was as follows (from strongest to weakest) vanillin > phenol > syringaldehyde > 5-HMF > furfural > levulinic acid > acetic acid > formic acid. The effect of inhibitors on xylose fermentation was as follows (from strongest to weakest) phenol > vanillin > syringaldehyde > furfural > 5-HMF > formic acid > levulinic acid > acetic acid. The NAPX37 strain showed substantial tolerance to typical inhibitors and showed good fermentation characteristics, when a medium with inhibitor cocktail or rape straw hydrolysate was used. This research provides important clues for inhibitors tolerance of recombinant industrial xylose-fermenting S. cerevisiae.
Assuntos


Texto completo: Disponível Coleções: Bases de dados internacionais Base de dados: LILACS Assunto principal: Saccharomyces cerevisiae / Xilose / Glucose Idioma: Inglês Revista: Braz. j. microbiol Assunto da revista: Microbiologia Ano de publicação: 2017 Tipo de documento: Artigo / Documento de projeto País de afiliação: China Instituição/País de afiliação: Sichuan University/CN

Texto completo: Disponível Coleções: Bases de dados internacionais Base de dados: LILACS Assunto principal: Saccharomyces cerevisiae / Xilose / Glucose Idioma: Inglês Revista: Braz. j. microbiol Assunto da revista: Microbiologia Ano de publicação: 2017 Tipo de documento: Artigo / Documento de projeto País de afiliação: China Instituição/País de afiliação: Sichuan University/CN
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