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Systematic study of β‐asarone‐rich volatile oil from Acori graminei rhizoma by off‐line supercritical CO 2 extraction–gas chromatography–mass spectrometry
Author(s) -
Dai Jian,
Ha Chengyong,
Shen Minmin
Publication year - 2008
Publication title -
journal of separation science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.72
H-Index - 102
eISSN - 1615-9314
pISSN - 1615-9306
DOI - 10.1002/jssc.200700242
Subject(s) - chemistry , chromatography , extraction (chemistry) , supercritical fluid , fractionation , mass spectrometry , gas chromatography–mass spectrometry , supercritical fluid extraction , gas chromatography , essential oil , yield (engineering) , organic chemistry , materials science , metallurgy
Supercritical CO 2 extraction (SCE) technology was used to extract a volatile oil, rich in β‐asarone, from Acori graminei rhizoma (AGR). The effect of different extraction and fractionation parameters on oil yield and selectivity towards β‐asarone was investigated by SCE using commercial AGR samples. The optimal conditions ( P e / T e = 10 MPa/45°C; P f1 / T f1 = 8 MPa/–10°C; P f2 / T f2 = 2 MPa/10°C) gave a good oil yield and selectivity for β‐asarone. The extracts were also analyzed by GC–MS and compared with the volatile oil obtained by hydrodistillation, in which 39 main constituents including β‐asarone were found. Different cultivated AGR samples obtained from three areas of China were evaluated in terms of their volatile oil compositions obtained by extraction of commercial AGR samples under optimal conditions; the extract of the Guangdong (GD) sample showed a high β‐asarone content.