Fatty Acid Characteristics of Isochrysis galbana Lipids Extracted Using a Microwave-Assisted Method

Cherng-Yuan Lin and Bo-Yu Lin
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Cherng-Yuan Lin: Department of Marine Engineering, National Taiwan Ocean University, Keelung 202, Taiwan
Bo-Yu Lin: Department of Marine Engineering, National Taiwan Ocean University, Keelung 202, Taiwan

Energies, 2015, vol. 8, issue 2, 1-12

Abstract: Lipids were extracted from Isochrysis galbana using a microwave-assisted method accompanied by various types of organic solvents. The effects of organic solvent type and microwave input energy on the fatty acid characteristics of the extracted lipids and their biodiesel product were investigated. Variations in the characteristics of the lipids extracted using a combination of n -hexane and iso -propanol solvents in both emulsion and direct mixtures were also compared. The experimental results showed that greater quantities of Isochrysis galbana lipids, and fatty acid methyl esters transesterified from those lipids, were extracted when using microwave irradiation with an organic solvent mixture of n -hexane and isopropanol in a 2:1 volumetric ratio than when using either n -hexane or isopropanol as the sole solvent. A greater quantity of Isochrysis galbana lipids was extracted when an emulsion of isopropanol solvent evenly dispersed in the continuous phase of n -hexane solvent was used than when a direct mixture of the two solvents was used. In addition, the quantity of lipids extracted from the dried Isochrysis galbana powder with the assistance of microwave irradiation was 9.08 wt% greater than when using traditional Soxhlet extraction without microwave irradiation.

Keywords: microwave-assisted extraction; Isochrysis galbana; microalgae lipid; solvent emulsion; fatty acid characteristics (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2015
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Citations: View citations in EconPapers (1)

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