study, the comparison of Elsholtziaciliatavolatile compounds from the stem (with leaf) and flower
was acquired. The volatile compounds of these two parts from Elsholtziaciliata aerial parts were respectively analyzed by a rapid
and convenient static headspace injection technique coupled with gas chromatography-mass spectrometry and the relative contents of each
constituent between the two different parts were determined by peak area
normalization. 61 compounds were identified in the stem (with leaf) and flower,
among which 39 components simultaneously exist. 47 and 53 compounds were
separated and identified in the volatile compounds from the different parts of Elsholtziaciliata, respectively. There were differences among some
volatile constituents of the
two parts, but the main constituents were
all Elsholtzia ketone, caryophyllene,
3-octanol and Dehydroelsholtzia ketone. The most abundant components in the stem
(with leaf) included Elsholtzia ketone (84.20%), caryophyllene (4.3%) and 3-octanol (3.11%), while Elsholtzia ketone (88.03%), caryophyllene
(3.33%) and 3-octanol (1.53%) were the main components in the flower. 8 single
constituents were identified in the stem (with leaf) volatiles including 3-heptanone
and linalool, while 14 constituents only including 2-methylbutanoic acid and
Perillene have been found in the flower volatiles. Elsholtzia ketone was the main compound, and its concentration was
significantly higher than other substances (>80% of the total oils in Elsholtziaciliata). The study provided an important scientific base
for the further utilization of Elsholtziaciliata resources and may be helpful for systematically understanding the
constituents of volatile compounds of Elsholtziaciliata.
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