Enzymatic saccharification of duckweed (Lemna minor) biomass without thermophysical pretreatment

Zhao, X., Elliston, A., Collins, S. R. A., Moates, G. K., Coleman, M. J. and Waldron, K. W. (2012) Enzymatic saccharification of duckweed (Lemna minor) biomass without thermophysical pretreatment. Biomass and Bioenergy, 47. pp. 354-361. ISSN 0961-9534

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Abstract

Duckweed is a rapidly replicating aquatic plant that has the potential to decontaminate effluent streams from food processing and also has a low-lignin content. Hence it could provide a more suitable source of cellulose for conversion to biofuels. This paper reports that duckweed biomass has the potential to be enzymatically saccharified to produce glucose and other cell-wall-derived sugars which might be converted to ethanol by fermentation or exploited as industrial platform chemicals. The enzymatic digestibility has been studied on alcohol-extracted, water-insoluble preparations of duckweed cell walls. Within these, glucose accounts for w = 25.4% (dry wt), which has arisen from cellulose and non-cellulosic glucans including starch. Several commercial cell-wall degrading enzymes and cocktails have been evaluated. Saccharification can be achieved within about 8 h using commercial cellulase at 4.35 FPU g−1 substrate in conjunction with added beta-glucosidase at 100 U g−1 substrate. The potential for exploiting duckweed is discussed.

Item Type: Article
Uncontrolled Keywords: duckweed,lemna minor,enzymes,saccharification,biomass sugar
Faculty \ School: Faculty of Science > School of Biological Sciences
Depositing User: Pure Connector
Date Deposited: 07 Oct 2014 10:40
Last Modified: 21 Apr 2020 23:28
URI: https://ueaeprints.uea.ac.uk/id/eprint/50323
DOI: 10.1016/j.biombioe.2012.09.025

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