Ethanol production from lignocellulose by the dimorphic fungus Mucor indicus
Konferensbidrag (offentliggjort, men ej förlagsutgivet), 2008

Ethanol production from dilute-acid hydrolyzate by the dimorphic fungus Mucor indicus was investigated. A mixture of different forest wood chips dominated by spruce was hydrolyzed with 0.5 g/L sulfuric acid at 15 bar for 10 min, yielding different sugars including galactose, glucose, mannose, and xylose, but also different fermentation inhibitors such as acetic acid, furfural, hydroxymethyl furfural (HMF), and phenolic compounds. We induced different morphological growth of M. indicus from purely filamentous, mostly filamentous, mostly yeast-like to purely yeast-like. The different forms were then ysed to ferment the hydrolyzate. They tolerated the presence of the inhibitors under anaerobic batch cultivation well and the ethanol yield was 430-440 g/kg consumed sugars. The ethanol productivity depended on the morphology. Judging from these results, we conclude that M. indicus is useful for ethanol production from toxic substrates independent of its morphology.

dimorphic fungi

bio-ethanol

Mucor indicus

dilute acid hydrolysis

lignocellulosic materials

Författare

Patrik R Lennartsson

Chalmers, Kemi- och bioteknik, Kemisk reaktionsteknik

Keikhosro Karimi

Chalmers, Kemi- och bioteknik

Lars Edebo

Göteborgs universitet

Mohammad Taherzadeh Esfahani

Chalmers, Kemi- och bioteknik

World Bioenergy. Jönköping, Sweden, 27-29 May, 2008

Ämneskategorier

Industriell bioteknik

Mikrobiologi inom det medicinska området