Table 3.

Compositional variation in the essential oils of V. negundo from the six study locations.

	Plateau	Nasarawa	Niger	Benue	Kwara	Kogi
RT	%	%	%	%	%	%	Compounds	RIExp	RILit
4.711	0.69						α-thuiene	928	924
5.750	40.2	39.83	20.09	27.94	28.76	16.01	α-pinene	934	931
6.789		0.81					camphene	946	943
7.271			1.68	1.28	1.43		sulcatone	965	960
7.800	12.21	11.31	5.99	8.38		4.72	sabinene	983	975
8.255	0.89	1.21			7.94	42.04	β·pinene	988	988
8.289				16.78			myrcene	994	993
8.296			34.65		20.27		α-phellandrene	1005	1002
8.384			8.10	1.44			α·3-carene	1012	1010
8.391					20.36		α-terpinene	1020	1017
8.615			8.57			16.47	p-cymene	1023	1022
8.744	0.69	0.68					β-phellandrene	1025	1025
8.805		0.86		0.65			(E)-β-ocimene	1032	1029
8.812	1.04						y-terpinene	1047	1041
9.060						9.192	trans-sabinene hydrate	1054	1054
9.192	9.11	8.09	4.75	6.72	4.78		Cis-linalool oxide	1088	1086
9.633	0.94	0.92		0.88			trans-linalool oxide	1098	1092
9.708					1.2	0.82	terpinolene	1100	1100
9.776	1.12	1.38	0.77	1.16	0.79	0.67	linalool	1105	1102
9.871	1.31	1.35	0.74	1.03	0.67	0.6	cis-sabinene hydrate	1178	1174
10.47			4.03			2.64	pelargonaldehyde	1193	1186
10.76				1.81			camphor	1318	1316
11.01	1.39	2.01	0.59	2.06	1.79	1.25	citronellal	1395	1389
11.61	2.04	2.42		5.2	2.41		borneol	1414	1409
11.79						0.64	terpinen-4-ol	1425	1417
11.96				1.05			α-terpineol	1445	1437
12.07	1.89	1.00	2.85	1.52	2.84	0.12	verbenone	1456	1452
12.52				0.67			n-decanal	1459	1454
12.61		1.86			1.07	1.72	citronellol	1466	1460
12.61	1.79		1.03	2.87			geraniol	1491	1489
13.01		5.11		3.95			linalyl acetate	1494	1492
13.47	5.65	1.62	2.06	1.94	2.12	1.04	bornyl acetate	1499	1498
13.86		3.47		3.71			4-terpinenyl acetate	1526	1522
14.24	1.19	0.92	1.16		1.2	0.73	α-terplnyl acetate	1552	1548
14.62				0.65			α-cubebene	1561	1561
14.93	3.8	0.67		0.97	0.6		α-ylangene	1574	1574
15.56	2.23	1.23		0.82			α-copaene	1578	1576
15.99	1.09			0.94	0.63		β-bourbonene	1589	1582
16.14	1.96	0.7		0.67			β-elemene	1599	1592
16.56		1.04	0.75	0.77			α-gurjunene	1610	1608
16.68	1.71	1.65		0.64			β-caryophyllene	1637	1638
17.10		1.83		0.68			trans·α·bergamotene	1643	1649
17.19		1.63					α-guaiene	1657	1652
17.20	1.76						α-humulene	1660	1658
17.67		1.59					germacrene D	1871	1880
18.12	1.8	1.92		0.82			β-selinene	1889	1889
18.59	1.97	1.83		0.67			ledene	1891	1890
	1.53	1.06	1.44	1.33	1.14	0.34	Unknown
Monoterpenes	76.5	74.65	90.04	80.16	94.08	96.232
Sesquiterpenes	16.32	14.09	0.75	7.63	1.23	0
Others	5.65	10.2	7.77	10.88	3.55	3.68

RT: Retention Time (min), RI_Exp: Experimental retention index, and RI_Lit: Literature retention index.