Antibacterial Activity of Daucus crinitus Essential Oils along the Vegetative Life of the Plant

Table 2

Chemical compositions of D. crinitus essential oils (%) during three developmental stages.

𝑁^∘a	Componentsb	𝐼𝑙^c	𝐼𝑎^d	I	II	III
1	Nonane	900	900	tr	—	—
2	α-pinene	936	931	—	0.6	0.5
3	Sabinene	973	966	—	0.1	tr
4	β-pinene	978	971	—	0.1	tr
5	Myrcene	987	981	—	1.4	1.9
6	Decane	1000	1000	tr	0.1	0.1
7	p-cymene	1015	1012	—	0.1	0.1
8	1,8 Cineole	1024	1020	—	0.6	0.5
9	Limonene	1025	1026	—	0.6	1.5
10	(E)-β-ocimene	1041	1037	—	0.1	0.1
11	γ-terpinene	1051	1049	tr	0.1	0.1
12	1-Octanol	1061	1056	0.1	tr	tr
13	2-Methyl-Decane	1068	1065	—	tr	0.1
14	Nonanal	1076	1074	0.2	0.1	tr
15	α-Terpinolene	1082	1079	0.2	tr	0.1
16	Linalool	1086	1086	0.2	tr	0.1
17	Undecane	1100	1100	4.0	0.1	tr
18	2-Ethyl-hexyl acetate	1144	1149	0.2	0.4	0.1
19	Terpinen-4-ol	1164	1161	0.1	0.1	0.1
20	Decanal	1188	1187	2.7	0.5	0.2
21	Dodecane	1200	1198	0.2	tr	tr
22	Decanol	1263	1259	10.4	2.1	0.7
23	Nonanoic acid	1263	1263	0.1	tr	tr
24	Bornyl acetate	1270	1269	0.1	2.1	0.7
25	Undecanal	1290	1280	0.4	0.2	tr
26	Tridecane	1300	1300	0.4	tr	tr
27	n-Octyl isobutyrate	1329	1325	tr	tr	0.2
28	Neryl acetate	1342	1336	—	0.1	tr
29	Decanoic acid	1347	1348	0.6	0.2	tr
30	Benzyl 2-methyl butyrate	1360	1352	0.6	0.2	tr
31	Undecanol	1367	1367	0.8	0.4	0.1
32	𝛼-copaene	1379	1386	0.1	0.1	tr
33	𝛽-Bourbonene	1386	1376	—	0.1	0.1
34	Dodecanal	1389	1390	6.3	7.3	0.2
35	Tetradecane	1400	1403	0.3	tr	tr
36	Longifolene	1411	1409	0.1	0.1	tr
37	α-Santalene	1422	1415	0.1	0.4	0.4
38	β-Caryophyllene	1420	1424	0.1	tr	tr
39	Dauca-3,8-diene	1428	1426	0.1	tr	tr
40	trans-α-Bergamotene	1432	1431	0.2	tr	tr
41	(E)-β-Farnesene	1448	1449	—	tr	tr
42	α-Humulene	1456	1451	1.9	0.5	tr
43	Zizaene	1456	1463	—	2.3	3.1
44	Dodecanol	1472	1470	2.7	0.5	0.4
45	α-Curcumene	1473	1474	0.1	0.4	0.4
46	Germacrene-D	1479	1478	0.2	tr	tr
47	β-Selinene	1486	1480	0.1	tr	tr
48	Zingiberene	1489	1483	tr	tr	0.1
49	Pentadecane	1500	1500	5.4	1.1	0.1
50	γ-Cadinene	1516	1513	0.1	0.1	tr
51	Geranyl butyrate	1534	1530	1.2	2.1	0.5
52	Isochavicol isobutyrate	1546	1541	26.4	41.4	76.1
53	(Z)-3-Hexenyl benzoate	1545	1557	0.8	0.3	tr
54	Dodecanoic acid	1554	1560	0.6	0.4	tr
55	Caryophyllene oxide	1576	1572	0.6	2.1	0.1
56	Dodecyl acetate	1585	1580	—	0.4	0.1
57	Hexadecane	1600	1599	1.8	1.9	0.2
58	α-Cedrol	1603	1596	1.2	5.0	0.1
59	Isochavicol 2-methyl butyrate	1651	1648	7.9	11.3	5.4
60	α-Bisabolol	1672	1667	0.1	0.9	0.2
61	Heptadecane	1700	1700	9.8	2.9	0.1
62	Benzyl benzoate	1730	1723	0.7	0.8	0.6
63	Tetradecanoic acid	1761	1756	0.1	0.3	0.1
64	Hexadecanal	1782	1787	1.1	0.5	0.1
65	Lactarazulene	1796	1792	tr	0,5	0.1
66	Neophytadiene	1807	1807	0.1	0.5	0.1
67	Phytone	1833	1835	0.2	0.1	0.2
68	Dodecyl pentanoate	1843	1840	0.2	0.1	1.3
69	Isophytol	1946	1944	—	tr	0.1
70	Hexadecanoic acid	1951	1949	1.5	0.1	tr
71	(E) Phytol	2114	2102	0.4	0.5	tr
	Total			93.8	95.3	97.4
	Aliphatic compounds			49.9	19.6	3.7
	Phenolic compounds			36.4	54	82.1
	Monoterpene hydrocarbons			0.2	3.1	4.3
	Oxygenated monoterpenes			0.4	2.9	1.4
	Sesquiterpene hydrocarbons			4.3	6.6	5.1
	Oxygenated sesquiterpenes			2.1	8.1	0.6
	Diterpene hydrocarbons			0.1	0.5	0.1
	Oxygenated diterpenes			0.4	0.5	0.1

aOrder of elution is given on apolar column (Rtx-1). bRetention indices of literature on the apolar column (lRI_a). cRetention indices on the apolar Rtx-1 column (RI_a). tr: trace, (<0.05%). Vegetative cycle—I: early vegetative; II: early flowering; III: full flowering.