Conference article

Ethanol Production by Mucor Indicus Using the Fungal Autolysate as a Nutrient Supplement

Reihaneh Asachi
Department of Chemical Engineering, Isfahan University of Technology, Isfahan, Iran

Keikhosro Karimi
Department of Chemical Engineering, Isfahan University of Technology, Isfahan, Iran

Mohammed J. Taherzadeh
School of Engineering, University of Borås, Sweden

Download articlehttp://dx.doi.org/10.3384/ecp11057486

Published in: World Renewable Energy Congress - Sweden; 8-13 May; 2011; Linköping; Sweden

Linköping Electronic Conference Proceedings 157:65, p. 486-491

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Published: 2011-11-03

ISBN: 978-91-7393-070-3

ISSN: 1650-3686 (print), 1650-3740 (online)

Abstract

To develop a cost-effective fermentation medium; fungal extract (FE) of Mucor indicus biomass; which is a by-product of fermentation processes; was evaluated as a nutrient source for ethanol production by the fungus. Autolysis as a natural process of self-digestion of fungal cells was used to release the nutrients in surrounding medium leading to the production of the FE. Glucose consumption and ethanol production were followed using several media made with different concentrations of FE as nutrient supplementation replacing either yeast extract (YE) or whole nutrient. According to the results; 5 g/L YE could be successfully replaced with 5 g/L FE; resulting in higher ethanol yield (0.46 g/g) and productivity (0.69 g/L.h). Yield of glycerol production; the major byproduct of fermentation; was also increased by supplementation of the FE.

Keywords

Bioethanol; Fungal extract; Autolysis; Mucor indicus

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