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Physiology of yeast strains isolated from Brazilian biomes in a minimal medium using fructose as the sole carbon source reveals potential biotechnological applications

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Abstract

The aim of this study was to evaluate the kinetic parameters and the production of metabolites of 13 novel yeasts isolated from a distillery and fruits, and Saccharomyces cerevisiae CAT-1, cultivated in fructose-based medium. The yeasts with the highest µmax were obtained from must, Pichia kudriavzevii BB2, P. kudriavzevii BB1, and S. cerevisiae BB9 (0.47–0.49 h−1). S. cerevisiae CAT-1 (3.02 g gDCM−1 h−1), S. cerevisiae BB9 (3.01 g gDCM−1 h−1), and Candida glabrata Recol 41 (2.52 g gDCM−1 h−1) stood out in terms of µS. C. parapsilosis Recol 29, and Rhodotorula mucilaginosa Recol 03 strains showed the highest YX/S (0.30 and 0.28 gDCM g−1, respectively). C. glabrata Recol 10 and S. cerevisiae BB9 strains stood out for their higher substrate conversion rates into ethanol (0.44 and 0.41 gEth gS−1, respectively). R. mucilaginosa Recol 03 presented the poorest performance in substrate consumption (0.87 g gDCM−1 h−1), while the strains isolated from must and C. glabrata Recol 10 showed the highest ethanol production and the C. parapsilosis Recol 29 showed the highest biomass conversion.

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Abbreviations

q S :

Specific substrate uptake rate

µ max :

Maximum specific growth rate

Y X/S :

Biomass yield

Y P/S :

Product yield

X max :

Maximum cell concentration

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Acknowledgements

The authors gratefully acknowledge the Pro-rectory of Research and Post-graduation of the Federal University of Grande Dourados and the Brazilian research funding agencies CAPES, CNPq, and FUNDECT for their financial support.

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Correspondence to Gustavo Graciano Fonseca.

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The authors declare no competing financial interest.

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de Andrade Silva, C.A., Oka, M.L. & Fonseca, G.G. Physiology of yeast strains isolated from Brazilian biomes in a minimal medium using fructose as the sole carbon source reveals potential biotechnological applications. 3 Biotech 9, 191 (2019). https://doi.org/10.1007/s13205-019-1721-9

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  • DOI: https://doi.org/10.1007/s13205-019-1721-9

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