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Volume: 7 , Issue: 2

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Indian Journal of Microbiology Research


Ethanol production from sugarcane bagasse hydrolysate using newly adapted strains of Meyerozyma guilliermondi CBA-524 and Pichia kudriavzevii CBA-519


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Author Details : Marcia Jaqueline Mendonca Maciel, Karol de Souza Barbosa, Luciana Araujo Cassa-Barbosa, Spartaco Ast

Volume : 4, Issue : 2, Year : 2017

Article Page : 182-186


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Abstract

New strains of the yeasts Meyerozyma guilliermondi CBA-524 and Pichia kudriavzevii CBA-519, capable of growing on sugarcane bagasse hydrolysate, have a great potential for second-generation bioethanol processes. Meyerozyma guilliermondi CBA-524, achieved a maximum ethanol concentration of 3.01g/L corresponding to a yield of 0.26 g ethanol per g of sugar and a productivity of 0.125 g/l/h, after 24 h of cultivation. Pichia kudriavzevii CBA-519 exhibited a prolonged fermentation time on bagasse hydrolysate resulting in an ethanol yield of 0.26 g/g and a productivity of 0.015 g/l/h after 192 h of fermentation. The ethanol yield and the volumetric productivity using the adapted P. stipitis CBS6054 standard were 0.34 g/g and 0.083 g/l/h, respectively, after 48 h of cultivation. Furthermore, the newly adapted M. guilliermondi CBA-524 demonstrated significantly enhanced tolerance to sugarcane bagasse hydrolysate, exhibiting a maximum in ethanol concentration after 24 h of fermentation. More adapted yeasts and improved fermentation conditions for this yeast can be of great importance for the increased production of ethanol using sugarcane bagasse hydrolysate.

Keywords:
Hydrolysate, Bioethanol, Meyerozyma guilliermondi, Pichia kudriavzevii.

How to cite : Maciel M J M, Barbosa K D S, Cassa-barbosa L A, Ast S, Ethanol production from sugarcane bagasse hydrolysate using newly adapted strains of Meyerozyma guilliermondi CBA-524 and Pichia kudriavzevii CBA-519. Indian J Microbiol Res 2017;4(2):182-186

Copyright © 2017 by author(s) and Indian J Microbiol Res. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (CC-BY-NC 4.0) (creativecommons.org)