NATURAL PRODUCT RESEARCH AND DEVELOPMENT ›› 2017, Vol. 29 ›› Issue (增刊1): 91-94. doi: 10.16333/j.1001-6880.2017.S.019

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Optimization of Supercritical Extraction Using CO2 of Essential Oils Extraction from Piper longum L.by Response Surface Analysis

MENG Jing1,2,3, SUO You-rui1,2*, ZOU Lin-you1,2,3   

  1. 1 Qinghai Key Laboratory of QinhaiTibet Plateau Biological Resources,Northwest Institute of Plateau Biology,Chinese Academy of Sciences,Xining 810001,China;2Supported by State Key Laboratory of Plateau Ecology and  Agriculture(Qinghai University),Xining 810016,China;3University of the Chinese Academy of Sciences,Beijing 100049,China
  • Online:2017-08-02 Published:2017-08-02

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Abstract: Response surface methodology (RSM) is applied to optimize supercritical fluid extraction process of essential oils from Piper longum L.Based on single experiments,the temperature of extraction,the pressure of extraction,the dynamic  extraction of time are selected for Box-Behnken central composite designing.RSM is employed to study the effect of these factors on yield of essential oils.The results indicates that the optimal extraction conditions are 49 ℃ as the temperature,36.5 MPa as the pressure,with 180 min extraction.Under this conditions,the extraction yield of essential oils is up to 5.67%.

Key words: Piper longum L., essential oils, supercritical extraction by CO2, Response surface methodology