2017
DOI: 10.1016/j.biortech.2017.06.064
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Biodegradable alternative for removing toxic compounds from sugarcane bagasse hemicellulosic hydrolysates for valorization in biorefineries

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Cited by 39 publications
(27 citation statements)
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“…The high concentration of d ‐xylose in the hemicellulosic fraction of sugarcane bagasse and efficacy of several yeasts in assimilating d‐ xylose are the main factors driving interest in this raw material for the production of xylitol 14,15 . However, the pre‐treatment process generates several by‐products including furans (furfural and 5‐hydroxymethylfurfural), carboxylic acids (levulinic acid, formic acid, and acetic acid), and phenolics (phenol, vanillin, vanillic acid, and coumaric acid) 16,17 . These compounds may be removed from the medium by the use of activated charcoal, resin, biopolymer solvent extraction, or vacuum evaporation 10,13,16 …”
Section: Introductionmentioning
confidence: 99%
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“…The high concentration of d ‐xylose in the hemicellulosic fraction of sugarcane bagasse and efficacy of several yeasts in assimilating d‐ xylose are the main factors driving interest in this raw material for the production of xylitol 14,15 . However, the pre‐treatment process generates several by‐products including furans (furfural and 5‐hydroxymethylfurfural), carboxylic acids (levulinic acid, formic acid, and acetic acid), and phenolics (phenol, vanillin, vanillic acid, and coumaric acid) 16,17 . These compounds may be removed from the medium by the use of activated charcoal, resin, biopolymer solvent extraction, or vacuum evaporation 10,13,16 …”
Section: Introductionmentioning
confidence: 99%
“…However, the pre‐treatment process generates several by‐products including furans (furfural and 5‐hydroxymethylfurfural), carboxylic acids (levulinic acid, formic acid, and acetic acid), and phenolics (phenol, vanillin, vanillic acid, and coumaric acid) 16,17 . These compounds may be removed from the medium by the use of activated charcoal, resin, biopolymer solvent extraction, or vacuum evaporation 10,13,16 …”
Section: Introductionmentioning
confidence: 99%
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“…Segundo Rao et al (2006) a eficiência destes procedimentos depende do tipo de matéria-prima, do processo hidrolítico e do microorganismo empregado na etapa fermentativa. Já foram empregados métodos de alteração de pH (ROBERTO et al, 1991;MARTINEZ et al, 2001), combinação de alteração de pH e adsorção com carvão ativado (ALVES et al, 1998;MARTON et al, 2006), adsorção com carvão ativado seguido de resinas de troca iônica MARTON;FELIPE, 2005;VILLAREAL et al, 2006), tratamento só com resinas de troca iônica ) e floculação usando polímeros vegetais (ARRUDA et al, 2008;SILVA-FERNANDES et al, 2017), celites e hidrotalcitas (COSTA et al, 2014). Salienta-se que durante o processo de concentração à vácuo para aumento de teor de xilose mencionado previamente (RODRIGUES et al, 2003a), ocorre também a diminuição na concentração de compostos tóxicos voláteis, como ácido acético e furanos (VILLAREAL et al, 2006), porém permite o acúmulo de compostos não voláteis, como os derivados fenólicos (RODRIGUES et al, 2003a).…”
Section: Destoxificação Do Hidrolisado Hemicelulósicounclassified
“…A produção de xilitol pode ocorrer a partir da conversão por via química ou biotecnológica da molécula de xilose, abundante em biomassas vegetais. O processo atual de produção, a nível global de exportação ocorre por via química, por um mecanismo denominado hidrogenação catalítica (SINNER et al, 1988;RAO et al, 2016 Desta maneira o processo de catálise química exige condições severas de temperatura e pressão, o que prejudica a eficiência e rentabilidade do processo (HOU-RUI, 2012).…”
Section: Introductionunclassified