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Title: Sulfuric acid hydrolysis and detoxification of the red alga Pterocladiella capillacea for bioethanol fermentation using the thermotolerant yeast Kluyveromyces marxianus
Authors: Wu CH;Chien WC;Chou HK;Yang J;Lin HT
Contributors: 國立臺灣海洋大學:食品科學系
Date: 2014-09
Issue Date: 2017-07-31T01:52:15Z
Publisher: Journal of Microbiology and Biotechnology
Abstract: Abstract:One-step sulfuric acid saccharification of the red alga Pterocladiella capillacea was optimized, and various detoxification methods (neutralization, overliming, and electrodialysis) of the acid hydrolysate were evaluated for fermentation with the thermotolerant yeast Kluyveromyces marxianus. A proximate composition analysis indicated that P. capillacea was rich in carbohydrates. A significant galactose recovery of 81.1 ± 5% was also achieved under the conditions of a 12% (w/v) biomass load, 5% (v/v) sulfuric acid, 121°C, and hydrolysis for 30 min. Among the various detoxification methods, electrodialysis was identified as the most suitable for fermentable sugar recovery and organic acid removal (100% reduction of formic and levulinic acids), even though it failed to reduce the amount of the inhibitor 5-HMF. As a result, K. marxianus fermentation with the electrodialyzed acid hydrolysate of P. capillacea resulted in the best ethanol levels and fermentation efficiency.
Relation: 24(9), pp.1245-1253
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/43409
Appears in Collections:[食品科學系] 期刊論文

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