A biorefinery-based approach for the production of ethanol from enzymatically hydrolysed cotton stalks

Cotton post-harvest residue/cotton stalk (CS) - a major agro-residue in south asian countries was evaluated as a feed stock for bioethanol production. The common thermochemical pretreatment strategies based on dilute acid and alkali and different combinations of biomass hydrolyzing enzymes were eval...

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Veröffentlicht in:	Bioresource technology 2017-10, Vol.242, p.178
Hauptverfasser:	Christopher, Meera, Mathew, Anil K, Kiran Kumar, M, Pandey, Ashok, Sukumaran, Rajeev K
Format:	Artikel
Sprache:	eng
Schlagworte:	Biomass Cellulase Cotton Fiber Ethanol Fermentation Hydrolysis Saccharomyces cerevisiae
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creator	Christopher, Meera Mathew, Anil K Kiran Kumar, M Pandey, Ashok Sukumaran, Rajeev K
description	Cotton post-harvest residue/cotton stalk (CS) - a major agro-residue in south asian countries was evaluated as a feed stock for bioethanol production. The common thermochemical pretreatment strategies based on dilute acid and alkali and different combinations of biomass hydrolyzing enzymes were evaluated for saccharification of CS biomass. A hydrolytic efficiency of 80% was achieved for alkali treated biomass using cellulase supplemented with beta glucosidase. Recycling of undigested/residual biomass and/or enzyme supported same final sugar concentration as for fresh hydrolytic experiments. Fermentation was carried out using a novel, inhibitor-resistant strain of Saccharomyces cerevisiae where 76% of theoretical maximum efficiency was attained. Material balances were derived for the entire process from biomass pre-processing to hydrolysis.
doi_str_mv	10.1016/j.biortech.2017.03.190
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subjects	Biomass Cellulase Cotton Fiber Ethanol Fermentation Hydrolysis Saccharomyces cerevisiae
title	A biorefinery-based approach for the production of ethanol from enzymatically hydrolysed cotton stalks
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