Enzyme-Assisted Extraction of Oil from Wet Microalgae Scenedesmus sp. G4

Shuhao Huo, Zhongming Wang, Fengjie Cui, Bin Zou, Pengxiang Zhao and Zhenhong Yuan
Additional contact information
Shuhao Huo: School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China
Zhongming Wang: Key Laboratory of Renewable Energy, Chinese Academy of Sciences, Guangzhou 510640, Guangdong, China
Fengjie Cui: School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China
Bin Zou: School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China
Pengxiang Zhao: Beijing Biomass Energy Technology Center, State Grid Energy Conservation Service Ltd., Beijing 100053, China
Zhenhong Yuan: Key Laboratory of Renewable Energy, Chinese Academy of Sciences, Guangzhou 510640, Guangdong, China

Energies, 2015, vol. 8, issue 8, 1-10

Abstract: The enzyme-assisted aqueous extraction of oil from wet microalgae was employed to avoid the energy consumption of a dewatering process. In this paper, oil-rich microalgae Scenedesmus sp. G4 was hydrolyzed by enzyme mixtures for oil extraction. The results showed that the algae concentration had the greatest influence on yield of extracted oil, and the temperature and the ratio of enzyme mixtures affected the results as follows: the maximum yield of oil extracted from Scenedesmus sp. G4 reached 86.1% under optimal conditions with an algae concentration at 2.5 g/L, temperature 30/50 °C, pH 3.5/4.5 and a cellulase:pectinase:hemicellulase ratio of 1:1:1 or 1:2:1 (w/w/w). The results also indicated that the enzyme mixtures had a significant impact on the integrity of microalgae cells and the crystallization index increased from 30.7% to around 36.0% after enzymatic hydrolysis treatment. The cell wall of Scenedesmus sp. G4 has a high content of cellulose I? and low crystallization, which is beneficial to the oil extraction by the enzyme-assisted hydrolysis method.

Keywords: Scenedesmus sp.; wet microalgae; oil extraction; enzyme-assisted hydrolysis (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
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

Downloads: (external link)
https://www.mdpi.com/1996-1073/8/8/8165/pdf (application/pdf)
https://www.mdpi.com/1996-1073/8/8/8165/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:8:y:2015:i:8:p:8165-8174:d:53731

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().