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- Title
Lipid Extraction From Oleaginous Microorganism with Electrochemical Method.
- Authors
Zhang, Guan; Tyagi, Rajeshwar Dayal; Chen, Jiaxin; Li, Ji; Zhang, Xiaolei; Drogui, Patrick; Dong, Xiaoqing
- Abstract
In this study, electro‐treatment is used to disrupt the microbe cells for facilitating the lipid extraction from oleaginous yeast. Two types of the electrochemical assisted lipid extraction are performed. One is that an electrochemical method is used as pre‐treatment to break cells, and thereafter solvents (hexane, methanol, and mixture of chloroform:methanol) are used to dissolve the lipid, defined as electrochemical pre‐treatment followed extraction. The extraction efficiency reaches 43 and 92% in the electrochemical involved treatment with hexane and chloroform:methanol, respectively. In addition, simultaneous electrochemical treatment and lipid extraction is also conducted. In the process, the biomass dispersed in the solvents is subjected to the electrochemical treatment for extraction, defined as simultaneous electrochemical treatment and lipid extraction. The highest lipid extraction efficiency is 92.17% w/w dry biomass obtained at 48 h extraction time with chloroform:methanol:water as solvents. Electrochemical treatment shows great potential in lipid extraction as it somewhat reduces the toxic chloroform utilization. Increase of current of electro‐treatment leads to the increase of saturation degree of the biodiesel converted from lipid extracted with electro‐treatment. It is found that the current of electro‐treatment should be kept below 0.4 A in order to avoid the impact on biodiesel property. Practical applications: The study provides a way of lipid extraction from oleaginous microorganism with an electrochemical method. It has great potential to be utilized in lipid extraction from microorganisms. An electrochemical method is used to extract lipid from oleaginous microorganisms. The oleaginous microorganism is subjected to electrochemical treatment. The cells are ruptured after electricity shock and allow the solvents to approach the intercellular products of the oleaginous microorganism. Therefore, the lipid in the cells are extracted. An electrochemical method is used to extract lipid from oleaginous microorganisms. The oleaginous microorganism is subjected to electrochemical treatment. The cells are ruptured after electricity shock and allow the solvents to approach the intercellular products of the oleaginous microorganism. Therefore, the lipid in the cells are extracted.
- Subjects
ELECTROCHEMICAL analysis; CHLOROFORM; BIODIESEL fuels; SOLVENTS; MICROORGANISMS
- Publication
European Journal of Lipid Science & Technology, 2018, Vol 120, Issue 11, pN.PAG
- ISSN
1438-7697
- Publication type
Article
- DOI
10.1002/ejlt.201800215