Evaluation of various solvent systems for lipid extraction from wet microalgal biomass and its effects on primary metabolites of lipid-extracted biomass

Environmental Science and Pollution Research International
Faiz Ahmad AnsariFaizal Bux

Abstract

Microalgae have tremendous potential to grow rapidly, synthesize, and accumulate lipids, proteins, and carbohydrates. The effects of solvent extraction of lipids on other metabolites such as proteins and carbohydrates in lipid-extracted algal (LEA) biomass are crucial aspects of algal biorefinery approach. An effective and economically feasible algae-based oil industry will depend on the selection of suitable solvent/s for lipid extraction, which has minimal effect on metabolites in lipid-extracted algae. In current study, six solvent systems were employed to extract lipids from dry and wet biomass of Scenedesmus obliquus. To explore the biorefinery concept, dichloromethane/methanol (2:1 v/v) was a suitable solvent for dry biomass; it gave 18.75% lipids (dry cell weight) in whole algal biomass, 32.79% proteins, and 24.73% carbohydrates in LEA biomass. In the case of wet biomass, in order to exploit all three metabolites, isopropanol/hexane (2:1 v/v) is an appropriate solvent system which gave 7.8% lipids (dry cell weight) in whole algal biomass, 20.97% proteins, and 22.87% carbohydrates in LEA biomass. Graphical abstract: Lipid extraction from wet microalgal biomass and biorefianry approach.

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Citations

Feb 22, 2018·Biology·Rahul Vijay KapooreSeetharaman Vaidyanathan
Mar 5, 2018·Environmental Science and Pollution Research International·Xiaoyu MaQunhui Wang
Feb 3, 2020·Bioprocess and Biosystems Engineering·Le Thai HangTadashi Toyama
Jan 11, 2021·Biotechnology for Biofuels·Quan WangMasaki Takaoka
Apr 24, 2021·Biotechnology Advances·Rahul Vijay KapooreCarole A Llewellyn
Jun 27, 2021·Environmental Science and Pollution Research International·Faiz Ahmad AnsariFaizal Bux

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