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Chinese Agricultural Science Bulletin ›› 2016, Vol. 32 ›› Issue (4): 108-112.doi: 10.11924/j.issn.1000-6850.casb15080044

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Study on Extraction Process of Eucommia Samara Oil with Supercritical CO2

Liu Qiuling, Cui Li, Chen Dong, Xiao Wenjun   

  1. (National Research Center of Engineering Technology for Utilization of Botanical Functional Ingredients from Botanicals/Provincial Co-innovation Center of Utilization of Botanical Function Ingredients, Hunan Agricultural University, Changsha 410128)
  • Received:2015-08-07 Revised:2015-08-17 Accepted:2015-09-11 Online:2016-02-01 Published:2016-02-01

Abstract: The paper aims to optimize the supercritical CO2 extraction of seed oil in Eucommia. Taking the samara of Eucommia as raw material, and the extraction ratio of samara oil as the index, by controlling the change of mono factors, the optimal extraction temperature, extraction pressure, separation temperature and extraction time were validated with supercritical CO2 extraction of Eucommia seed oil. And then, orthogonal design and verification experiments were conducted to determine the optimal extraction process. Factors influencing the extraction yield of oil in Eucommia were as follows: extraction temperature> extraction time>extraction pressure> separation temperature. And the optimum condition was obtained as follows: the extraction temperature 35℃, the extraction pressure 35 MPa, the separation temperature 45℃, the separation time 50 min. The yield of oil obtained under this condition with supercritical CO2 was 14.73%, and the α-linolenic acid accounted for 61.37% of Eucommia seed oil.

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