Influence of SHF Treatment on Lipid Output from Microalga Chlorella Sorokiniana

International science and technology conference "Earth science"

Politaeva, N.^1 ; Smyatskaya, Yu.^1 ; Toumi, A.^1

Higher Sch. of Biotech. and Food Technol., S. Petersburg State Polytech. Univ. Named after Peter the Gt., Novorossiyskaya Str. 48-50, St.Petersburg

194021, Russia^1

关键词: Cell disintegration;    Chlorella sorokiniana;    Combined treatment;    Drying technique;    Lipid fractions;    Micro-algae;    Physical treatments;    Total lipids;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/272/3/032056/pdf
DOI  :  10.1088/1755-1315/272/3/032056

来源: IOP

【 摘 要 】

This work is devoted to investigation of methods of obtaining and usage of lipid fraction from microalgae. We describe methods for obtaining lipid fractions from microalgae Chlorella Sorokiniana by means of Sohxlet apparatus. We studied influence of microalga biomass drying technique (IR and lyophilization) and cell disintegration technique on lipid output from biomass. We investigated physical (SHF-radiation) and mechanical (grinding) treatments aiming at cell disintegration. It was shown, that maximum lipid output is obtained at combined treatment of biomass by lyophilization and SHF-irradiation. When comparing total lipids output from lyophilized biomass without and after disintegration (by mechanical and physical treatments), we didn't notice any notable difference. Lyophilic treatment simultaneously dehydrates biomass and results in maximum cell disintegration, which provides maximum lipids output without additional disintegration stage (13.2%). It was proved that biomass lyophilization results in maximum lipids output.