Rhaponticum acaule (L) DC essential oil: chemical composition, in vitro antioxidant and enzyme inhibition properties

Table 1 Composition of the essential oil of R. acaule

Constituents^a	l.R.I.^b	(%)^c
(E,E)-2,4-heptadienal	1012	0.2 ± 0.002
Linalool	1101	0.4 ± 0.010
Nonanal	1104	0.2 ± 0.004
Methyl chavicol (synonim estragole)	1197	0.5 ± 0.010
Decanal	1206	0.6 ± 0.014
1-tridecene	1292	0.8 ± 0.010
Eugenol	1358	1.8 ± 0.014
α-copaene	1377	1.3 ± 0.011
β-cubebene	1391	0.6 ± 0.010
β-elemene	1392	1.8 ± 0.018
Methyl eugenol^d	1403	8.3 ± 0.280
β-caryophyllene	1419	5.7 ± 0.170
β-copaene	1430	0.2 ± 0.003
cis-α-ambrinol	1437	0.9 ± 0.017
α-humulene	1455	1.7 ± 0.016
2-methyltetradecane	1462	0.8 ± 0.012
γ-curcumene	1481	0.5 ± 0.010
Germacrene D	1482	49.2 ± 1.100
(E)-β-ionone	1487	6.2 ± 0.180
Bicyclogermacrene	1496	4.1 ± 0.120
α-muurolene	1499	0.4 ± 0.011
(Z)-α-bisabolene	1506	3.7 ± 0.080
(E,E)-α-farnesene	1508	4.2 ± 0.100
δ-cadinene	1524	0.8 ± 0.014
Elemicin	1555	0.8 ± 0.015
Dendrolasin	1580	1.5 ± 0.017
Oxygenated monoterpenes		0.4 ± 0.010
Sesquiterpene hydrocarbons		74.2 ± 1.663
Oxygenated sesquiterpenes		1.5 ± 0.017
Phenylpropanoids		11.4 ± 0.319
Apocarotenes		7.1 ± 0.197
Non-terpene derivatives		2.8 ± 0.042
Total identified		97.4 ± 2.248

^aIdentification of compounds was made by the calculation of their L.R.I and by GC–MS analysis
^bLRI: linear retention indices (HP-5 column)
^c%: Percentage calculated by GC-FID on non-polar capillary column HP-5
^dMain compounds in bold

ISSN: 2662-7671