Ionic liquid-mediated extraction of lipids from algal biomass

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• 作者：Young-Hoo Kim^a ; Yong-Keun Choi^a ; Jungsu Park^a ; Seongmin Lee^a ; Yung-Hun Yang^a ; Hyung Joo Kim^a ; Tae-Joon Park^b ; Yong Hwan Kim^c ; Sang Hyun Lee^a ; ^{sanghlee@konkuk.ac.kr}
• 关键词：Ionic liquid ; Lipid extraction ; Microalgae ; Biodiesel ; Chlorella vulgaris
• 刊名：Bioresource Technology
• 出版年：2012
• 期刊代码：11_09608524
• 类别：ce
• 出版时间：April, 2012
• 卷：109
• 期：Complete
• 页码：312-315
• 文件大小：176 K

摘要

Lipids from algal biomass were extracted using mixtures of ionic liquids (ILs) and methanol, and fatty acid profiles of the extracted lipids were characterized in this work. Mixtures of ILs and methanol successfully dissolved biomass leaving lipids insoluble. The total contents of lipids extracted from commercial and cultivated Chlorella vulgaris were 10.6%and 11.1%, respectively, by the conventional Bligh and Dyer鈥檚 method, while a mixture of [Bmim][CF₃SO₃] and methanol extracted 12.5%and 19.0%of the lipids, respectively. Multi-parameter regression by the linear solvation energy relationship showed that dipolarity/polarizability and hydrogen bond acidity of ILs are more important than their hydrogen bond basicity for effectively extracting lipids from algal biomass. Fatty acid profiles of the lipids extracted using IL-methanol mixtures showed that C16:0, C16:1, C18:2, and C18:3 fatty acids were dominant. This suggests that the lipids extracted from C. vulgaris can be used as a source of biodiesel production.