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

Departamento de Química, PPGQ/CCEN, Universidade Federal da Paraíba, João Pessoa 58051-970, Brazil
Departamento de Engenharia Química/CT, Universidade Federal da Paraíba, João Pessoa 58051-900, Brazil
Unidade Acadêmica de Engenharia Química/CCT, Universidade Federal de Campina Grande, Campina Grande 58429-140, Brazil
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.
Biomolecules 2018, 8(1), 2;
Received: 28 November 2017 / Revised: 3 January 2018 / Accepted: 4 January 2018 / Published: 10 January 2018
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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MDPI and ACS Style

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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