Assessment of Volatile Chemical Composition of the Essential Oil of Jatropha ribifolia (Pohl) Baill by HS-SPME-GC-MS Using Different Fibers

Table 1

Chemical composition of oil and volatile the J. ribifolia (Pohl) Baill identified by GC/MS and HS-SPME-GC-MS.

		Compounds^a	KI^b	KI^c	Oil	PA	PDMS/DVB	PDMS	CW/DVB
1	7.83	Tricyclene	919	921	3.79	7.52	32.39	21.01	12.26
2	8.24	𝛼-Pinene	931	932	6.35	13.19	ND	21.32	15.22
3	8.70	Camphene	945	946	4.34	8.65	11.98	15.15	23.65
4	9.13	2,3,4-Trimethyl-2-cyclopenten-1-one	958	ND	ND	0.01	ND	ND	3.20
5	9.67	𝛽-Pinene	974	974	9.16	18.26	19.48	22.3	4.45
6	10.21	𝛽-Myrcene	990	988	0.51	1.37	3.71	2.63	0.5
7	10.81	𝛼-Phellandrene	994	1002	ND	ND	0.13	0.67	0.01
8	11.06	𝛼-Terpinen	1014	1014	0.12	0.15	1.25	0.01	1.01
9	11.35	p-Cymene	1022	1022	0.12	0.32	3.06	0.02	0.02
10	11.47	d-Limonene	1026	1024	1.55	4.19	6.00	6.33	10.4
11	12.32	3-Carene	1057	1054	ND	ND	0.02	0.01	ND
12	12.57	t-Terpinene	1057	1054	0.34	0.87	2.2	1.16	2.4
13	13.05	Trans-p-mentha-2,8-dienol	1070	ND	ND	0.10	0.17	0.07	0.17
14	13.63	Terpinolene	1088	1086	0.41	1.23	2.27	1.00	2.56
15	14.12	Linalool	1100	1095	0.33	0.82	0.44	0.17	0.59
16	14.54	exo-fenchol	1112	1116	0.42	0.9	0.6	0.25	0.91
17	14.68	Thujone	1116	1114	0.05	ND	0.01	0.01	0.01
18	14.83	cis-𝛽-terpineol	1120	1130	0.05	0.18	0.01	0.01	ND
19	14.99	⟨𝛼-⟩ campholenal	1125	1126	0.03	ND	0.01	0.02	0.03
20	15.41	Trans-pinocarveol	1137	1135	0.03	0.01	0.01	0.02	0.02
21	15.62	(−)-Camphor	1142	1141	0.03	0.01	0.4	0.24	0.01
22	15.76	2,3,3-Timethyl 2-norbornanol	1147	1140	0.05	1.27	ND	0.36	1.2
23	16.20	Pinocamphone	1159	1158	ND	ND	ND	ND	0.02
24	16.36	Borneol	1164	1165	0.76	1.19	0.59	0.024	0.5
25	16.69	3-Pinanone	1173	1172	0.06	ND	0.05	ND	0.77
26	16.80	p-Menth-1-en-4-ol, (R)-(−)-	1176	1174	2.91	6.17	2.8	1.14	3.83
27	17.29	p-Menth-1-en-8-ol	1185	1179	5.24	7.95	2.39	0.92	3.43
28	17.96	D-verbenone	1209	1204	ND	0.04	ND	ND	0.03
29	18.79	1,3,3-Trimethyl-2-(2-methyl-cyclopropyl)-cyclohexene)	1190	1186	ND	ND	0.09	0.03	0.02
30	20.55	2,6-Octadienoic acid, 3,7-dimethyl-, ethyl ester	1195	1194	0.36	0.61	0.32	0.12	0.01
31	20.94	Cyclopropane, Trimethy(2-methyl-1-propenylidene)-	1285	ND	1.23	2.06	0.82	0.3	1.05
32	21.83	Methyl geranate	1296	1322	0.46	0.60	0.18	0.07	0.22
33	22.75	2,4-Diisocyanato-1-methylbenzene	1301	ND	ND	0.38	ND	ND	ND
34	23.04	Isolongifolene, 9,10-dehydro-	1361	ND	0.12	ND	0.07	0.03	0.05
35	23.43	𝛽-Vatirene	1312	ND	8.34	ND	0.13	0.02	0.02
36	23.59	𝛽-Patchoulene	1324	1322	0.26	0.27	0.02	0.01	0.15
37	24.05	𝛽-Elemene-(−)	1361	1391	0.01	0.13	0.05	0.02	0.05
38	24.30	Cyperene	1373	1398	0.01	6.45	2.72	1.19	3.35
39	24.46	(6-Hydroxymethyl-2,3-dimethylphenyl) methanol	1378	1379	ND	0.01	ND	ND	ND
40	24.77	Isoledene	1393	1389	1.35	0.89	0.36	0.14	0.44
41	26.6	𝛼-Gurjunene	1400	1409	6.98	3.05	0.93	0.34	1.18
42	27.36	Isoeugenol methylether	1494	ND	8.54	2.41	0.4	0.22	ND
43	28.23	Spathulenol	1514	1490	0.74	ND	ND	ND	0.09
44	28.87	Aromadendrene, dehydro-	1519	ND	3.52	0.93	0.22	0.11	0.32
45	28.38	Corimbolone	1533	ND	0.01	ND	ND	ND	ND
46	29.72	isolongifolene-5-ol	1534	ND	0.65	ND	ND	ND	ND
47	30.52	4,4,11,11-Tetramethyl-7-tetracyclo [6.2.1.0(3.8)0(3.9)]undecanol	1608	ND	6.64	0.39	0.15	0.14	ND
48	30.83	Cedrol	1619	ND	0.01	ND	ND	ND	ND
49	30.91	8S-cis-5(1H)-Azulenone, 2,4,6,7,8,8a-hexahydro-3,8-dimethyl-4-(1-methylethylidene)	1622	ND	3.33	ND	ND	ND	ND
50	31.55	Tujopsanone ⟨3-⟩	1645	1650	1.25	ND	ND	ND	ND
51	32.0	4a,8,8-Trimethyloctahydro cyclopropa(d)naphthalen-2(3H)-one	1661	ND	0.01	ND	ND	ND	ND
52	32.34	(−)-Spathulenol	1673	ND	1.25	ND	ND	ND	ND
53	32.69	6-Isopropenyl-4,8a-dimethyl-1,2,3,5,6,7,8,8a-octahydro-naphthalen-2-ol	1696	ND	1.15	ND	ND	ND	ND
54	32.90	𝛽-Guaiene	1697	ND	0.02	ND	ND	ND	ND
55	33.41	2,2,7,7-Tetramethyltricyclo [6.2.1.0(1,6)]undec-4-en-3-one	1713	ND	0.46	ND	ND	ND	ND
56	33,92	2(1H)naphthalenone, 3,5,6,7,8,8a-hexahydro-4,8a-dimethyl-6-(1-methylethenyl)	1732	ND	1.15	ND	ND	ND	ND
57	34.12	Acetic acid, 7-isoprophenyl-1,4a-dimethyl-3-oxo-2,3,4,4a,5,6,7,8-octahydronaphthalen-2-il esther	1740	ND	0.09	ND	ND	ND	ND
58	34.16	Oxide-[2] aromadendrene	1762	ND	0.01	ND	ND	ND	ND
59	34.78	8-Oxo-9H-cycloisolongipholene	1765	ND	2.09	ND	ND	ND	ND
60	35.08	Valeral	1776	ND	0.41	ND	ND	ND	ND
61	35.94	Methyl hinokiate	1827	ND	1.20	ND	ND	ND	ND
Total (%)					87.06	92.58	96.43	97.58	94.15
Terpenes					48.51	69.53	87.9	93.8	79.11
Alcohols/aldehyde					19.66	18.99	7.22	3.124	11.54
Ketone					4.66	0.06	0.41	0.25	3.27
Others					14.23	4.00	0.90	0.41	0.23

RT: retention time; ND: not determined; ^acompounds listed in order of elution from a DB-5 column; ^bKI calculated; ^cKI tabulated. PA: polyacrylate fiber; PDMS/DVB: polydimethylsiloxane/divinylbenzene fiber; PDMS: polydimethylsiloxane fiber; CW/DVB: Carbowax/divinylbenzene fiber.