Extraction of Astaxanthin from Euphausiapacific Using Subcritical 1,1,1, 2-tetrafluoroethane

Euphausia pacific is an important source of natural astaxanthin. Studies were carried out to assess the extractability of astaxanthin from E. pacific using subcritical 1, 1, 1,2-tetrafluoroethane （R134a）. To examine the effects of multiple process variables on the extraction yield, astaxanthin was e...

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Bibliographic Details
Published in:中国海洋大学学报：英文版 2012, Vol.11 (4), p.562-568
Main Author: HAN Yuqian MA Qinchuan WANG Lan XUE Changhu
Format: Article
Language:English
Subjects:
R134a
亚临界
四氟乙烷
天然虾青素
太平洋
提取率
水分含量
过程变量
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Summary:Euphausia pacific is an important source of natural astaxanthin. Studies were carried out to assess the extractability of astaxanthin from E. pacific using subcritical 1, 1, 1,2-tetrafluoroethane （R134a）. To examine the effects of multiple process variables on the extraction yield, astaxanthin was extracted under various conditions of pressure （30-150bar）, temperature （303-343 K）, time （10-50rain）, flow rate （2-10gmin-1）, moisture content （5.5%-63.61%）, and particle size （0.25-0.109mm）. The results showed that the extraction yield increased with temperature, pressure, time and flow rate, but decreased with moisture content and particle size. A maximum yield of 87.74% was obtained under conditions of 100bar, 333K, and 30min with a flow rate of 6gmin-1 and a moisture content of 5.5%. The substantial astaxanthin yield obtained under low-pressure conditions demonstrates that subcritical R134a is a good alternative to CO2 for extraction of astaxanthin from E. pacific.
ISSN:1672-5182
1993-5021