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Screening of Yeasts Isolated from Brazilian Environments for the 2-Phenylethanol (2-PE) Production

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Abstract

Phenylethanol alcohol, or 2-phenylethanol (2-PE) production by yeasts has been considered a promising alternative to its chemical synthesis. In order to evaluate the potential of yeast strains isolated from different Brazilian environments, we evaluated the 2-PE production of 267 strains. Among them, the Kluyveromyces marxianus CCT 7735 yeast stood out as being the best 2-PE producer. The K. marxianus CCT 7735 growth was impaired by 2-PE; nevertheless, this effect is less pronounced than the inhibition reported for certain Saccharomyces cerevisiae strains. The maximum 2-PE titer obtained under optimized conditions was 3.44 g/L, 28% higher than the titer achieved under unoptimized conditions. The optimized conditions were: 30ºC, and glucose and L-phe concentrations of 3.0 and 4.0 g/L, respectively. Moreover, the specific production rate of 2-PE increased twofold compared to the unoptimized conditions.

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Authors and Affiliations

  1. Departamento de Microbiologia, Instituto de Biotecnologia Aplicada à Agropecuária-BIOAGRO, Universidade Federal de Viçosa, Av. PH Rolfs s/n, Campus universitário, Viçosa, MG, Brazil

    Lorena Azevedo de Lima, Marisa Vieira de Queiroz & Wendel Batista da Silveira

  2. Departamento de Bioquímica e Biologia Molecular, Universidade Federal de Viçosa, Av. PH Rolfs s/n, Campus universitário, Viçosa, MG, Brazil

    Luciano Gomes Fietto

  3. Instituto Federal de Educação, Ciência e Tecnologia de Minas Gerais - Campus Ouro Preto, Ouro Preto, MG, Brazil

    Raphael Hermano Santos Diniz

Authors
  1. Lorena Azevedo de Lima
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  2. Raphael Hermano Santos Diniz
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  3. Marisa Vieira de Queiroz
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  4. Luciano Gomes Fietto
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  5. Wendel Batista da Silveira
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Correspondence to Wendel Batista da Silveira.

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de Lima, L.A., Diniz, R.H.S., de Queiroz, M.V. et al. Screening of Yeasts Isolated from Brazilian Environments for the 2-Phenylethanol (2-PE) Production. Biotechnol Bioproc E 23, 326–332 (2018). https://doi.org/10.1007/s12257-018-0119-6

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  • DOI: https://doi.org/10.1007/s12257-018-0119-6

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