. 2022 Nov 28;11(12):1712. doi: 10.3390/antibiotics11121712

Table 1.

The chemical composition of the essential oil from Croton linearis stems (CLS-EO) growing in the Siboney-Juticí Ecological Reserve, Santiago de Cuba.

Rt ^a (min)	Compounds	% RA ^b	RI_exp ^c	RI_lit ^d	Rt (min)	Compounds	% RA	RI_exp	RI_lit
5.73	α-thujene	1.28	926	926	25.86	not identified	0.32	1427	-
5.94	α-pinene	11.05	934	938	27.18	α-humulene	0.18	1458	1454
6.37	α-fenchene	0.45	949	943	28.30	α-amorphene	0.38	1484	1484
7.07	cis-sabinene	8.06	974	976	28.75	β-selinene	0.47	1495	1497
7.19	β-pinene	1.18	978	979	28.93	α-selinene	0.23	1499	1499
7.55	β-myrcene	1.30	991	990	29.41	γ-cadinene	0.19	1511	1512
8.05	α-phellandrene	1.20	1006	1002	29.80	cubebol	0.14	1521	1521
8.46	α-terpinene	0.85	1017	1017	30.10	zonarene	0.61	1528	1528
8.75	p-cymene	5.72	1025	1026	30.70	selina-4(15),7(11)-diene	0.57	1542	1540
8.90	limonene	1.31	1029	1031	31.19	germacrene B	0.27	1555	1555
9.00	1,8-cineole (eucalyptol)	27.83	1032	1033	31.68	dihydroisocaryophyllene epoxide	0.89	1566	1565
9.17	Z-β-ocimene	1.04	1036	1041	32.08	germacrene D-4-ol	0.17	1576	1576
9.56	E-β-ocimene	0.19	1046	1044	32.28	spathulenol	0.16	1581	1578
10.01	γ-terpinene	1.00	1058	1059	32.58	caryophyllene oxide	0.88	1589	1589
10.36	cis-sabinene hydrate	0.21	1068	1066	33.25	guaiol	1.93	1605	1605
10.53	cis-linalool oxide	0.13	1072	1074	33.41	copaborneol	0.14	1609	1593
11.17	terpinolene	0.29	1089	1088	33.64	humulene epoxide II	0.14	1615	1614
11.63	linalool	3.91	1101	1098	33.88	(2Z)-2,6-dimethyl-2,7-octadiene-1,6-diol	0.54	1621	1617
12.57	cis-p-menth-2-en-1-ol	0.11	1123	1121	34.04	epi-γ-eudesmol	4.15	1626	1627
13.35	cis-verbenol	0.14	1141	1142	34.38	γ-eudesmol	0.35	1634	1635
14.56	δ-terpineol	0,33	1170	1173	34.60	3-methyl-5-(1,4,4-trimethylcyclohex-2-enyl)pentan-1-ol	2.09	1640	1637
15.00	terpinen-4-ol	2.55	1180	1177	34.80	hinesol	2.98	1645	1638
15.61	α-terpineol	4.35	1194	1189	34.88	α-muurolol	1.49	1649	1649
17.50	thymol methyl ether	0.78	1237	1234	35.16	valerianol	1.15	1654	1655
17.91	2-isopropyl-1-methoxy-4-methylbenzene	0.18	1246	1244	35.42	cadin-4-en-10-ol	0.88	1660	1663
19.79	isobornyl acetate	0.45	1289	1286	36.10	9E,12Z-tetradecadien-1-ol	0.23	1677	1676
24.50	β-elemene	0.66	1395	1394	36.85	geranyl tiglate	0.79	1697	1700
25.25	longifolene	0.28	1412	1412	37.04	E,E-farnesal	0.19	1729	1730
25.71	E-caryophyllene	0.66	1423	1427
Monoterpene hydrocarbons						14 (34.84%)
Oxygenated monoterpenes						12 (41.05%)
Sesquiterpene hydrocarbons						12 (4.82%)
Oxygenated sesquiterpenes						19 (19.29%)

^a RTmin: Retention time; ^b %RA: Relative abundance; ^c RI_exp: Retention index relative to n-alkanes (C₈–C₂₀) on the RTX-5MS column; ^d RI_lit: Kovats retention index (values from the literature). The main compounds are highlighted in bold font.