Xylitol production by yeasts isolated from rotting wood in the Galápagos Islands, Ecuador, and description of Cyberlindnera galapagoensis f.a., sp. nov
| Autor: | Patricia B. Portero, Maria C. Guamán-Burneo, Raquel M. Cadete, Carlos A. Rosa, Kelly J. Dussán, Monaliza A. M. Cheab, Enrique Javier Carvajal-Barriga, Silvio Silvério da Silva |
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| Rok vydání: | 2015 |
| Předmět: |
food.ingredient
Molecular Sequence Data Yamadazyma Xylitol Microbiology Hydrolysate Candida tropicalis chemistry.chemical_compound food Yeasts Botany Cluster Analysis Hemicellulose DNA Fungal Molecular Biology Phylogeny Microscopy biology Sequence Analysis DNA General Medicine Kazachstania biology.organism_classification Wood Yeast chemistry Ecuador Metschnikowia |
| Zdroj: | Antonie van Leeuwenhoek. 108:919-931 |
| ISSN: | 1572-9699 0003-6072 |
| DOI: | 10.1007/s10482-015-0546-8 |
| Popis: | This study evaluated d-xylose-assimilating yeasts that are associated with rotting wood from the Galapagos Archipelago, Ecuador, for xylitol production from hemicellulose hydrolysates. A total of 140 yeast strains were isolated. Yeasts related to the clades Yamadazyma, Kazachstania, Kurtzmaniella, Lodderomyces, Metschnikowia and Saturnispora were predominant. In culture assays using sugarcane bagasse hemicellulose hydrolysate, Candida tropicalis CLQCA-24SC-125 showed the highest xylitol production, yield and productivity (27.1 g L−1 xylitol, Y p/s xyl = 0.67 g g−1, Qp = 0.38 g L−1. A new species of Cyberlindnera, strain CLQCA-24SC-025, was responsible for the second highest xylitol production (24 g L−1, Y p/s xyl = 0.64 g g−1, Qp = 0.33 g L−1 h−1) on sugarcane hydrolysate. The new xylitol-producing species Cyberlindnera galapagoensis f.a., sp. nov., is proposed to accommodate the strain CLQCA-24SC-025T (=UFMG-CM-Y517T; CBS 13997T). The MycoBank number is MB 812171. |
| Databáze: | OpenAIRE |
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