Table 1.

Structural assignment and relative peak area percent of the volatile components in essential oils obtained from root of vertiver grass cultivated in three different systems.

No.a	Structural Assignmentb	KI c	Adams’ RI	Referenced	Relative Peak Area (%)± SD e
					Normal soil	Normal soil with microbes	Semi-hydroponic
1	1-nonanal1,3	1294		18			1.06 ± 0.01
2	nonanoic acid1,3	1345		19			0.99 ± 0.01
3	1-decanal1,3	1352		20			0.45 ± 0.02
4	(E)-9,10-dehydro-2-norzizaene1	1393		21	1.87 ± 0.06	5.30 ± 0.01	0.46 ± 0.01
5	(Z)-9,10-dehydro-2-norzizaene1	1405		21	20.78 ± 0.05	46.03 ± 0.02	14.71 ± 0.02
6	alpha-funebrene1,2,3	1406	1403	6	0.14 ± 0.02	0.60 ± 0.02	0.02 ± 0.01
7	2-norzizaene1	1417		11	0.20 ± 0.02	1.56 ± 0.03	0.29 ± 0.01
8	acora-2,4-diene1	1425		6	1.93 ± 0.02	1.73 ± 0.02	0.65 ± 0.01
9	alpha-cedrene1,2	1430	1412	6	0.19 ± 0.01	0.28 ± 0.02
10	cascarilladiene1	1436		6	2.16 ± 0.04	2.27 ± 0.04	2.04 ± 0.01
11	11,12,13-tri-nor-eremophil-1(10)-en-7-one1	1442		6	0.43 ± 0.02	0.34 ± 0.02
12	gamma-elemene1,2	1451	1437	6	0.48 ± 0.02	0.47 ± 0.02	0.18 ± 0.01
13	prezizaene1,2	1459	1450	6	1.55 ± 0.03	0.35 ± 0.01
14	khusimene1,2	1462	1455	6	3.04 ± 0.39	0.89 ± 0.02	0.42 ± 0.02
15	ar-curcumene1,2	1468	1481	6	0.60 ± 0.01	0.44 ± 0.01	0.09 ± 0.01
16	4,7-epoxy-spirovetiva-2,11-diene1	1471		6	1.35 ± 0.04	5.59 ± 0.02	2.94 ± 0.02
17	alpha-amorphene1,2	1474	1485	6	0.76 ± 0.01	1.47 ± 0.01	1.30 ± 0.01
18	cis-eudesma-6,11-diene1,2	1490	1490	6	0.07 ± 0.02	0.65 ± 0.02	0.14 ± 0.01
19	sesquicineole1	1502		6		0.34 ± 0.03
20	delta-cadinene1,2	1508	1523	6		0.22 ± 0.01
21	gamma-vetivenene1,2	1518	1533	6	0.83 ± 0.13	1.83 ± 0.01	0.07 ± 0.01
22	10,11-epoxy-eremophil-1-ene1	1538		6	0.56 ± 0.02	0.95 ± 0.05	0.55 ± 0.02
23	(+)(6S,10R)-6,10-dimethylbicyclo-[4.4.0]dec-1-en-3-one1	1550		15	2.44 ± 0.02	2.00 ± 0.09	3.21 ± 0.01
24	beta-calacorene1,2	1566	1546	6	0.22 ± 0.01	1.18 ± 0.01	0.30 ± 0.01
25	15-nor-funebran-3-one1	1574		6	1.45 ± 0.02	1.46 ± 0.01	2.91 ± 0.01
26	cis-eudesm-6-en-11-ol1	1579		6	1.58 ± 0.04	2.37 ± 0.01	1.09 ± 0.03
27	khusimone1,2	1598	1604	6	20.57 ± 0.01	6.13 ± 0.07	20.91 ± 0.01
28	13-nor-cis-eudesm-6-en-11-one1	1602		6	1.80 ± 0.02	0.66 ± 0.02	1.35 ± 0.01
29	trans-dracunculifoliol1	1612		6	1.07 ± 0.02	0.63 ± 0.02	0.77 ± 0.01
30	13-nor-eremophila-1(10)-en-11-one1	1618		6	0.18 ± 0.02	0.21 ± 0.02	0.55 ± 0.01
31	eudesm-4(15),7-dien-3β-ol1	1638		6	0.43 ± 0.02	0.22 ± 0.02	0.27 ± 0.01
32	beta-eudesmol1,2	1644	1651	6	2.61 ± 0.02	2.37 ± 0.02	4.48 ± 0.01
33	(E)-opposita-4(15),7(11)-dien-12-al1	1651		6	7.71 ± 0.02	3.00 ± 0.06	10.55 ± 0.01
34	prezizaan-15-al1	1660		6	0.67 ± 0.01	0.41 ± 0.02	0.51 ± 0.03
35	2-epi-ziza-6(13)-en-3α-ol1	1665		6	5.31 ± 0.02	1.83 ± 0.03	6.85 ± 0.16
36	zizanal1,2	1671	1697	6	0.09 ± 0.01	0.12 ± 0.01	1.40 ± 0.01
37	khusian-2-ol1	1687		6	2.74 ± 0.02	1.24 ± 0.01	4.65 ± 0.01
38	(E)-opposita-4(15),7(11)-dien-12-ol1	1690		6	0.59 ± 0.02	0.41 ± 0.02	0.56 ± 0.01
39	cadina-1(10),6,8-triene1	1694		16	0.83 ± 0.03	0.43 ± 0.02	0.79 ± 0.01
40	khusimol1,2	1762	1743	6	11.11 ± 0.05	3.55 ± 0.04	12.21 ± 0.02
41	9,10-dehydro-isolongifolene1	1798		17	1.43 ± 0.01	0.19 ± 0.01
42	nootkatone1,2,3	1804	1807	6	0.21 ± 0.02	0.21 ± 0.01	0.31 ± 0.01
Total number of volatile components					37	39	36

^a Compounds in Figure 2; ^b Identification: 1, mass spectrum; 2, Kovát indices; 3, standard compound;

^c Kovát indices on DB-5 column; ^d Reference having same mass spectrum; ^e Standard deviations of three analyses