›› 2006, Vol. 26 ›› Issue (1): 129-131.
• 研究简报 • Previous Articles Next Articles
OUYANG Hui, YU Ji, ZHANG Yong-kang, CHEN Xiao-yuan
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Abstract: The technic of extracting oil from evening primrose (Oenothera biennis L.cv."Laershan-1")seeds was studied by supercritical CO2 extraction in orthogonal experiments. The optimal conditions were: extraction pressure 35 MPa, extraction temperature 30℃, separation temperature 35℃ and extraction time 60 min. Under optimal conditions, the yield is 23.1%. According to GC analysis, the main unsaturated fatty acid components of the oil include oleic acid,linoleic acid and γ-linolenic acid. Total content of unsaturated fatty acids is 91.93%. Analyses of physical-chemical parameters showed that acid number of the oil is very low, only 1.1 mg/g.
Key words: evening primrose oil, supercritical CO2 extraction, γ-linolenic acid, Oenothera biennis L.
CLC Number:
TQ91
OUYANG Hui;YU Ji;ZHANG Yong-kang;CHEN Xiao-yuan. Studies on Supercritical CO2 Extraction and Chemical Components of Oil from Evening Primrose Seeds[J]. , 2006, 26(1): 129-131.
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