Pretreatment of Sugarcane Bagasse Hemicellulose Hydrolysate for Xylitol Production by Candida guilliermondii

Alves, Lourdes A.; Felipe, Maria G. A.; Silva, João Batista de Almeida e; Silva, Sílvio S.; Prata, A. B.

doi:10.1007/978-1-4612-1814-2_9

Cited by 80 publications

(87 citation statements)

References 17 publications

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“…The content of HMF on neutralization and overliming with NH 4 OH was 1.89 and 1.87 g/kg hydrolysate respectively. HMF at a concentration of 1 g/l was able to inhibit fermentation by S. cerevisiae [19], while the presence of salt resulted in increased osmotic pressure and the ions can provide resistance effect if the concentration was high [20].…”

Section: Fermentation Processmentioning

confidence: 99%

Bioethanol Production from Seaweed Eucheuma cottonii by Neutralization and Detoxification of Acidic Catalyzed Hydrolysate

Fakhrudin¹,

Setyaningsih²,

Rahayuningsih³

2014

IJESD

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Section: Fermentation Processmentioning

confidence: 99%

Bioethanol Production from Seaweed Eucheuma cottonii by Neutralization and Detoxification of Acidic Catalyzed Hydrolysate

Fakhrudin¹,

Setyaningsih²,

Rahayuningsih³

2014

IJESD

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“…1). However, the production of xylitol through fermentation of hemicelullosic hydrolysates, a substrate rich in xylose, is hampered by the toxic compounds resulting from the hydrolysis of the lignocellulosic materials, such as acetic acid, phenol derivatives, furfural, hydroxymethylfurfural, which are toxic to the yeast (1).…”

Section: Introductionmentioning

confidence: 99%

Inhibitory effect of acetic acid on bioconversion of xylose in xylitol by Candida guilliermondii in sugarcane bagasse hydrolysate

Silva¹,

Felipe²,

Mancilha³

et al. 2004

Braz. J. Microbiol.

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Sugarcane bagasse hydrolysate (initial acetic acid concentration = 3.5g/L), was used as a fermentation medium for conversion of xylose into xylitol by the yeast Candida guilliermondii FTI 20037. Acetic acid (2.0g/L) was added to the medium at different times of fermentation, with the aim of evaluating its effects on the bioconversion process. The addition of acetic acid to the medium after 12h of fermentation resulted in the strongest inhibition of the yeast metabolism. In this case, the xylose consumption and cell growth were, respectively, 23.22 and 11.24% lower than when acid was added to the medium at the beginning of fermentation. As a consequence of the inhibitory effect, lower values of the xylitol yield (0.39g/g) and productivity (0.22g/L.h) were observed, corresponding to a reduction of 36 and 48%, respectively, in relation to the values obtained with the addition of acetic acid after other fermentation times. The results obtained allowed to conclude that, under the experimental conditions employed in this work, the inhibitory effect of acetic acid on the xylose-xylitol bioconversion depends on the fermentation time when this acid was added, and not only on its concentration in the medium.

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“…Esses compostos são considerados tóxicos à levedura, principalmente em função de suas concentrações no meio (Felipe et al, 1997b;Alves et al, 1998;Sene et al, 2000). Nota-se maior concentração do ácido acético, seguido de furfural e hidroximetilfurfural semelhante ao encontrado em hidrolisados de outros resíduos como cavacos de eucalipto (Felipe et al, 1996), bagaço de cana-de-açúcar (Rodrigues et al, 2001) e palha de trigo (Canilha, 2001 Em relação à fermentação do hidrolisado hemicelulósico de casca de aveia, os resultados apresentados na Figura 1 indicam a formação de xilitol a partir do metabolismo de xilose pela levedura C. guilliermondii, concomitantemente à formação de biomassa.…”

Section: Produção De Xilitol Em Hidrolisado De Casca De Aveiaunclassified

“…A xilose utilizada na produção biotecnológica de xilitol é proveniente de hidrolisados hemicelulósicos obtidos de resíduos agroindustriais tais como bagaço de cana-deaçúcar (Dominguez et al, 1996;Felipe et al, 1997a e b;Alves et al, 1998;Verde, 2001;Marton, 2002;Rodrigues et al, 2003), cavacos de eucalipto (Parajó et al, 1998;Canettieri et al, 2003), palha de arroz (Mussatto e Roberto 2002) e palha de trigo (Canilha, 2001).…”

Section: Introdução Introdução Introdução Introduçãounclassified

Avaliação da casca de aveia para produção biotecnológica de xilitol

et al. 2004

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Pretreatment of Sugarcane Bagasse Hemicellulose Hydrolysate for Xylitol Production by Candida guilliermondii

Cited by 80 publications

References 17 publications

Bioethanol Production from Seaweed Eucheuma cottonii by Neutralization and Detoxification of Acidic Catalyzed Hydrolysate

Bioethanol Production from Seaweed Eucheuma cottonii by Neutralization and Detoxification of Acidic Catalyzed Hydrolysate

Inhibitory effect of acetic acid on bioconversion of xylose in xylitol by Candida guilliermondii in sugarcane bagasse hydrolysate

Avaliação da casca de aveia para produção biotecnológica de xilitol

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