Chemical Constituents and Antimicrobial and Antioxidant Activities of Essential Oil from Dried Seeds of Xylopia aethiopica

Table 2

Chemical composition of essential oil from the dried seeds of X. aethiopica.

N^a	Compounds	RI l^b	RI a^c	(%)
1	Hexanal	767	768	0.1
2	α-Thujene	932	920	0.6
3	α-Pinene	936	931	5.9
4	Camphene	950	941	0.2
5	Thuja-2,4(10)-diene	946	944	0.4
6	Sabinene	973	963	1.9
7	β-Pinene	978	970	14.8
8	Dehydro-1,8-cineole	993	977	0.1
9	α-Phellandrene	1002	996	0.1
10	α-Terpinene	1013	1010	0.9
11	m-Cymene	1013	1011	1.6
12	Limonene	1025	1021	1.0
13	1,8-Cineole	1024	1021	16.4
14	Cis-β-ocimene	1029	1025	tr
15	γ-Terpinene	1051	1048	1.4
16	Trans-sabinene hydrate	1053	1051	0.5
17	(E)-linalool oxide (THF)	1058	1056	0.4
18	Terpinolene	1082	1080	0.5
19	Cis-sabinene hydrate	1082	1081	0.4
20	Linalool	1086	1086	3.0
21	α-Thujone	1089	1089	0.1
22	α-Campholenal	1105	1106	0.5
23	Nopinone	1116	1114	2.8
24	Camphor	1123	1122	0.1
25	Trans-pinocarveol	1126	1130	9.1
26	Sabinene ketone	1132	1131	1.1
27	Trans-verbenol	1136	1131	2.4
28	Pinocarvone	1137	1137	4.0
29	Cis-pinocamphone	1149	1151	0.8
30	Cryptone	1160	1159	0.2
31	Terpinen-4-ol	1164	1163	5.6
32	Myrtenal	1172	1172	5.2
33	α-Terpineol	1176	1174	2.0
34	Myrtenol	1178	1177	8.3
35	Trans-carveol	1200	1199	0.6
36	Cuminaldehyde	1213	1216	0.3
37	Carvone	1214	1224	0.3
38	Piperitone	1226	1234	tr
39	Perylaldehyde	1260	1242	0.1
40	α-Terpinen-7-al	1255	1257	0.1
41	Lyratyl acetate	1264	1261	0.1
42	Perillyl alcool	1280	1275	0.1
43	Carvacrol	1278	1281	0.1
44	Germacrene D	1479	1476	0.1
45	δ-Cadinene	1507	1513	0.1
46	Spathulenol	1572	1565	0.1
47	Caryophyllene oxyde	1570	1568	0.1
48	Alismol	1619	1611	0.9
49	Bulnesol	1665	1652	0.1
	Hydrocarbon monoterpenes			29.3
	Oxygenated monoterpenes			64.7
	Hydrocarbon sesquiterpenes			0.2
	Oxygenated sesquiterpenes			1.2
	Other compounds			0.1
	Total identified (%)			95.5
	Yields (w/w vs dry material)			1.35

^aOrder of elution is given on nonpolar column (Rtx-1), ^bretention indices of literature on the nonpolar column (lRIa) [21], ^cretention indices on the nonpolar Rtx-1 column (RIa), and tr, trace (<0.05%). The majority compounds are indicated in bold.