期刊
BIORESOURCE TECHNOLOGY
卷 128, 期 -, 页码 431-437出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2012.10.094
关键词
Biobutanol; ABE fermentation; Macroalgae; Ulva lactuca; Biorefinery; 1,2-Propanediol
资金
- Dutch Ministery of Energy, Agriculture and Innovation though Agentschap NL [EOS LT 08027]
Green seaweed Ulva lactuca harvested from the North Sea near Zeeland (The Netherlands) was characterized as feedstock for acetone, ethanol and ethanol fermentation. Solubilization of over 90% of sugars was achieved by hot-water treatment followed by hydrolysis using commercial cellulases. A hydrolysate was used for the production of acetone, butanol and ethanol (ABE) by Clostridium acetobutylicum and Clostridium beijerinckii. Hydrolysate-based media were fermentable without nutrient supplementation. C beijerinckii utilized all sugars in the hydrolysate and produced ABE at high yields (0.35 g ABE/g sugar consumed), while C. acetobutylicum produced mostly organic acids (acetic and butyric acids). These results demonstrate the great potential of U. lactuca as feedstock for fermentation. Interestingly, in control cultures of C beijerinckii on rhamnose and glucose, 1,2 propanediol was the main fermentation product (9.7 g/L). (C) 2012 Elsevier Ltd. All rights reserved.
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