Lipid extraction from Chlorella vulgaris by molten-salt/ionic-liquid mixtures

Sun A. Choi, Jin Suk Lee, You Kwan Oh, Min Ji Jeong, Seung Wook Kim, Ji Yeon Park

Research output: Contribution to journalArticlepeer-review

55 Citations (Scopus)


In this study, lipid extraction from Chlorella vulgaris was performed by using mixtures of molten salt and ionic liquid. The yield-enhancing effects of blending of molten salt with ionic liquid were investigated. Among the three molten salts (Zn(NO3)2·6H2O, Mg(ClO4)2·6H2O, and FeCl3·6H2O), FeCl3·6H2O showed a high lipid extraction yield (113.0mg/g cell) and good reaction performance. When FeCl3·6H2O was mixed with [Emim]OAc (5:1, w/w), the lipid extraction yield increased to 227.6mg/g cell, a performance similar to that of single [Emim]OAc (218.7mg/g cell). When lipid was extracted by the FeCl3·6H2O/[Emim]OAc mixture at a 5:1 (w/w) blending ratio, 90°C temperature, and 1h duration, the fatty acid content of the extracted lipid was 981.7mg/g lipid, indicating less than 2% impurity. The lipid extraction from C. vulgaris was improved by the synergistic effects of molten salt and ionic liquid with different ions.

Original languageEnglish
Pages (from-to)44-48
Number of pages5
JournalAlgal Research
Issue number1
Publication statusPublished - 2014

Bibliographical note

Funding Information:
This work was supported by the New & Renewable Energy Technology Development Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korean government Ministry of Knowledge Economy (No. 20123010090010 ) and by the Advanced Biomass R&D Center (ABC) of Global Frontier Project funded by the Ministry of Education, Science and Technology ( ABC-2012-053880 ).


  • Chlorella vulgaris
  • Fatty acids content
  • Ionic liquid
  • Lipid extraction
  • Microalgal oil
  • Molten salt

ASJC Scopus subject areas

  • Agronomy and Crop Science


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