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Biomolecules 2018, 8(1), 2; https://doi.org/10.3390/biom8010002

Evaluation of the Simultaneous Production of Xylitol and Ethanol from Sisal Fiber

1
Departamento de Química, PPGQ/CCEN, Universidade Federal da Paraíba, João Pessoa 58051-970, Brazil
2
Departamento de Engenharia Química/CT, Universidade Federal da Paraíba, João Pessoa 58051-900, Brazil
3
Unidade Acadêmica de Engenharia Química/CCT, Universidade Federal de Campina Grande, Campina Grande 58429-140, Brazil
4
Centro de Tecnologia e Desenvolvimento Regional (CTDR)/Departamento de Tecnologia de Alimentos (DTA)/IDEP, Universidade Federal da Paraíba, Av. dos Escoteiros, sn. Mangabeira VII, João Pessoa 58058-600, Brazil
*
Author to whom correspondence should be addressed.
Received: 28 November 2017 / Revised: 3 January 2018 / Accepted: 4 January 2018 / Published: 10 January 2018
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Abstract

Recent years have seen an increase in the use of lignocellulosic materials in the development of bioproducts. Because sisal fiber is a low cost raw material and is readily available, this work aimed to evaluate its hemicellulose fraction for the simultaneous production of xylitol and ethanol. The sisal fiber presented a higher hemicellulose content than other frequently-employed biomasses, such as sugarcane bagasse. A pretreatment with dilute acid and low temperatures was conducted in order to obtain the hemicellulose fraction. The highest xylose contents (0.132 g·g−1 of sisal fiber) were obtained at 120 °C with 2.5% (v/v) of sulfuric acid. The yeast Candida tropicalis CCT 1516 was used in the fermentation. In the sisal fiber hemicellulose hydrolysate, the maximum production of xylitol (0.32 g·g−1) and of ethanol (0.27 g·g−1) was achieved in 60 h. Thus, sisal fiber presents as a potential biomass for the production of ethanol and xylitol, creating value with the use of hemicellulosic liquor without detoxification and without the additional steps of alkaline pretreatment. View Full-Text
Keywords: polysaccharides; hemicellulose; bioproducts; xylose polysaccharides; hemicellulose; bioproducts; xylose
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Damião Xavier, F.; Santos Bezerra, G.; Florentino Melo Santos, S.; Sousa Conrado Oliveira, L.; Luiz Honorato Silva, F.; Joice Oliveira Silva, A.; Maria Conceição, M. Evaluation of the Simultaneous Production of Xylitol and Ethanol from Sisal Fiber. Biomolecules 2018, 8, 2.

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