Extraction optimization of volatile oil from chinese elder herb by supercritical CO₂ and its composition analysis

Authors

JIANG Hongyu, Hunan Provincial Engineering Research Center for Ginkgo Biloba, Hunan University of Science and Engineering, Yongzhou, Hunan 425199, China
LIU Yufeng, Hunan Provincial Engineering Research Center for Ginkgo Biloba, Hunan University of Science and Engineering, Yongzhou, Hunan 425199, China
XIE Guofei, Hunan Provincial Engineering Research Center for Ginkgo Biloba, Hunan University of Science and Engineering, Yongzhou, Hunan 425199, China
LIU Yilin, Hunan Provincial Engineering Research Center for Ginkgo Biloba, Hunan University of Science and Engineering, Yongzhou, Hunan 425199, China
LUO Xiaofang, Hunan Provincial Engineering Research Center for Ginkgo Biloba, Hunan University of Science and Engineering, Yongzhou, Hunan 425199, China
WANG Zongcheng, Hunan Provincial Engineering Research Center for Ginkgo Biloba, Hunan University of Science and Engineering, Yongzhou, Hunan 425199, China

Abstract

The extraction conditions of volatile oil from Chinese elder herb by supercritical CO₂ were optimized by single factor experiment and response surface methodology. Flow rate of CO₂, the pressure, temperature and time of extraction were employed to examine the influences of the yield of volatile oil. The chemical constituents were separated and identified by Gas chromatography-mass spectrometry (GC-MS). The optimal extracting conditions were flow rate of CO₂ 25 L/h, extraction pressure 30.5 MPa, at 45.0 ℃ for 2.8 h. The extraction rate of volatile oil from Chinese elder herb was 0.86%. 16 kinds of volatile compounds were separated from Chinese elder herb and accounted for 93.87% of the total extractions. The contents of the more compounds were 3-methylpentanoic acid (29.37%), 3-methylbutanoic acid (13.83%), 4-hexene-1-ol (8.27%), and 3-(ethylthio) butanoic acid (6.46%), respectively.

Publication Date

10-28-2017

First Page

154

Last Page

157

DOI

10.13652/j.issn.1003-5788.2017.10.034

Recommended Citation

Hongyu, JIANG; Yufeng, LIU; Guofei, XIE; Yilin, LIU; Xiaofang, LUO; and Zongcheng, WANG (2017) "Extraction optimization of volatile oil from chinese elder herb by supercritical CO₂ and its composition analysis," Food and Machinery: Vol. 33: Iss. 10, Article 34.
DOI: 10.13652/j.issn.1003-5788.2017.10.034
Available at: https://www.ifoodmm.cn/journal/vol33/iss10/34

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