Xing-xian ZHANG, Xiao-dong SUN, Ke YANG, et al. Characteristics Analysis for Volatile Compounds of 18 Heat-Clearing Herbs[J]. Chinese journal of experimental traditional medical formulae, 2019, 25(16): 111-119.
DOI:
Xing-xian ZHANG, Xiao-dong SUN, Ke YANG, et al. Characteristics Analysis for Volatile Compounds of 18 Heat-Clearing Herbs[J]. Chinese journal of experimental traditional medical formulae, 2019, 25(16): 111-119. DOI: 10.13422/j.cnki.syfjx.20191616.
Characteristics Analysis for Volatile Compounds of 18 Heat-Clearing Herbs
Headspace-solid phase microextraction-gas chromatography-mass spectrometry (HS-SPME-GC-MS) was used to analyze the characteristic volatile compounds from 18 heat-clearing herbs.
Method:
2
HS-SPME was used to extract the volatile components from different heat-clearing herbs
and the chemical compositions were analyzed by GC-MS. The GC was performed at the injector temperature of 250℃
the high-purity helium was used as the carrier gas at a constant column flow of 1.0 mL·min
-1
with no split sampling. The solvent delay time was 3 min. Mass spectrum conditions included electron bombardment ion source
electron bombardment energy of 70 eV
ion source temperature of 230℃
quadrupoles temperature of 150℃
and scanning range of
m
/
z
29-370.The volatile components were confirmed according to NIST2013 database
and the relative content percentage of each component was calculated by peak area normalization method. PCA was used to detect clustering and discuss the characteristics of volatile compounds of 18 heat-clearing herbs.
Result:
2
A total of 328 volatile compounds were detected in 18 heat-clearing herbs
including alkanes
unsaturated hydrocarbon
alcohols
aldehyde
ketones
esters
furan and other unknown compounds. The number and relative content of volatile components in different heat-clearing herbs varied dramatically. Several important characteristic volatile compounds
such as
l
-camphor
torreyol
caryophyllene oxide
globulol and 2
4-cycloheptadien-1-one
2
6
6-trimethyl
were detected in the 18 heat-clearing herbs by principal component analysis.
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Related Institution
Institute of Chinese Materia Medica,China Academy of Chinese Medical Sciences
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