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Title: Effect of Different Sets of Pleurotus ostreatus and Aspergillus niger Hydrolysis of Cassava Peelings on Bioethanol Yield
Authors: Worfa, Michael N.
Mensah, Moses
Afotey, Benjamin
Salifu, Samson Pandam
Keywords: Second-generation bioethanol
Pleurotus ostreatus (white-rot fungi)
Aspergillus niger (black molds)
Saccharomyces cerevisiae (baker’s yeast)
Issue Date: 2017
Publisher: American Journal of Environmental Engineering
Citation: American Journal of Environmental Engineering 2017, 7(3): 58-64, DOI: 10.5923/j.ajee.20170703.02
Abstract: This study investigated the effect of three different types of microbial activity on bioethanol yield from cassava peelings. The cassava peelings were pretreated by milling to 2mm particle size, autoclaved and hydrolyzed using Pleurotus ostreatus k910 (white-rot fungi), Aspergillus niger Menae1 (black molds) and a combination of the two fungi. The hydrolysates obtained were subsequently fermented to ethanol using the Saccharomyces cerevisiae (baker’s yeast). The analysis of lignocellulose fractions, fermentable sugars and bioethanol produced were performed using a van Soest, refractometry and gravimetric methods respectively. The effect of the various fungi used for biological pretreatment/hydrolysis on lignocellulose fractions and fermentable sugars released of each substrate were studied. P. otreatus k910 hydrolysis of the cassava peelings yielded an optimum fermentable sugar concentration of 34.11 g/L compared to 28.64 g/l for the A. niger MENAE1. However, the combination of the two fungi for hydrolysis gave the best results for fermentable sugar produced of 36.51 g/l for cassava peelings. The fermentation results revealed that the maximum ethanol yield for cassava peelings is 19.36% (w/w dry biomass).
Description: An article published by American Journal of Environmental Engineering 2017, 7(3): 58-64 DOI: 10.5923/j.ajee.20170703.02
URI: http://hdl.handle.net/123456789/11158
Appears in Collections:College of Science

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