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Solvent production from rice straw by a co-culture of Clostridium acetobutylicum and Saccharomyces cerevisiae: effect of pH control

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Solvent production from rice straw by a co-culture of Clostridium acetobutylicum and Saccharomyces cerevisiae: effect of pH control

dc.contributor.author	Capilla Lloris, Miguel
dc.contributor.author	Valles Sáez, Alejo
dc.contributor.author	San-Valero, Pau
dc.contributor.author	Álvarez Hornos, Francisco Javier
dc.contributor.author	Gabaldón García, Carmen
dc.date.accessioned	2023-06-15T08:27:51Z
dc.date.available	2023-06-16T04:45:06Z
dc.date.issued	2022	es_ES
dc.identifier.citation	Capilla, M., Valles, A., San-Valero, P., Álvarez-Hornos, F. J., & Gabaldón, C. (2022). Solvent production from rice straw by a co-culture of Clostridium acetobutylicum and Saccharomyces cerevisiae: effect of pH control. Biomass Conversion and Biorefinery, 1-13.	es_ES
dc.identifier.uri	https://hdl.handle.net/10550/87918
dc.description.abstract	One of the challenges in biofuel production from lignocellulosic wastes is to improve its conversion to solvents; therefore, new strategies to enhance xylose uptake are required due to be the secondary abundant sugar. In this context, a novel fermentation strategy integrating a co-culture of Clostridium acetobutylicum and Saccharomyces cerevisiae with pH control was developed. Initially, two different buffers, ammonium acetate and calcium carbonate, were tested under pHmin > 4.8 by fermenting 60 g L−1 of glucose with the C. acetobutylicum monoculture. Ammonium acetate was selected for fermenting media as butanol production was increased from 9.8 to 10.9 g L−1 over the calcium carbonate test. Comparing with the spontaneous acetone-butanol-ethanol (ABE) fermentation with C. acetobutylicum when no xylose consumption was observed, xylose consumption was efficiently increased by controlling pHmin > 4.8. The xylose consumption was > 47% either by using a 45:15 g L−1 glucose:xylose mixture or with rice straw (RS) hydrolysate. Clostridium monoculture using RS hydrolysate and pHmin > 4.8 produced a butanol (ABE) concentration of 6.5 (9.5) g L−1. While it increased to 7.0 (13.1) g L−1 when the co-culture with S. cerevisiae was used using same pH regulation strategy mainly due to ethanol increase up to 2.7 g L−1. Moreover, the xylose uptake doubled to 94% due to amino-acid secretion by yeast. Overall, this combined strategy was a very effective method for promoting sugar consumption and ABE solvent production from lignocellulosic waste.	es_ES
dc.language.iso	en	es_ES
dc.publisher	Springer	es_ES
dc.subject	ABE fermentation	es_ES
dc.subject	ethanol fermentation	es_ES
dc.subject	xylose	es_ES
dc.subject	pH control	es_ES
dc.subject	lignocellulosic waste	es_ES
dc.title	Solvent production from rice straw by a co-culture of Clostridium acetobutylicum and Saccharomyces cerevisiae: effect of pH control	es_ES
dc.type	journal article	es_ES
dc.subject.unesco	UNESCO::CIENCIAS TECNOLÓGICAS	es_ES
dc.identifier.doi	10.1007/s13399-022-02750-4	es_ES
dc.accrualmethod	CI	es_ES
dc.embargo.terms	0 days	es_ES
dc.type.hasVersion	VoR	es_ES
dc.rights.accessRights	open access	es_ES