Antibacterial and Antioxidant Properties of the Leaves and Stem Essential Oils of Jatropha gossypifolia L.

Table 1

Essential oils constituents in the leaf and stem of Jatropha gossypifolia.

		Composition (%)		Methods of identification	MS	Q
		Leaf	Stem
α-Pinene	927	—	5.03	KI, MSD	93, 79, 41, 136	97
β-Pinene	938	4.60	t	KI, MSD	93, 69, 41, 136	90
Camphene	954	—	2.79	KI, MSD	93, 69, 41, 136	98
α-Terpinene	1016	—	10.61	KI, MSD	93, 77, 136, 121	97
Limonene	1028	—	12.42	KI, MSD	68, 93, 107, 121	98
Linalool	1091	9.81	—	KI, MSD	71, 43, 69, 55	95
Menthol	1142	t	4.87	KI, MSD	79, 43, 41, 105	90
β-Bisabolene	1384	0.30	0.58	KI, MSD	204, 69, 41, 43	90
α-Aromadendrene	1386	3.65	10.48	KI, MSD	159, 91, 41, 220	90
α-Cadinene	1460	—	1.83	KI, MSD	161, 43, 105, 204	96
Germacrene D	1464	—	12.30	KI, MSD	20, 161, 32, 105	98
Farnesene	1471	2.60	0.27	KI, MSD	69, 93, 107, 133	96
γ-Cadinene	1486	4.21	5.49	KI, MSD	161, 43, 105, 204	97
α-Muurolene	1499	—	0.48	KI, MSD	121, 95, 43, 105	95
Viridiflorol	1530	8.27	—	KI, MSD	32, 79, 55, 109	90
Pentadecen-5-yne	1538	9.43	—	KI, MSD	79, 67, 41, 109	96
Bisabolol	1534	1.40	—	KI, MSD	39, 204, 69, 41	90
Germacrene B	1559	0.73	0.13	KI, MSD	120, 161, 32, 105	95
α-Copaene	1634	—	12.20	KI, MSD	105, 119, 161, 141	95
Dodecanoic acid	1975	3.23	—	KI, MSD	29, 60, 73, 129	98
Hexadecanoic acid	1968	5.06	—	KI, MSD	60, 73, 43, 256	97
Octadecanal	1999	8.60	t	KI, MSD	41, 57, 82, 96	90
Phytol	2045	33.40	18.05	KI, MSD	71, 57, 41, 123	90
9,17-Octadecadienal	2112	0.21	t	KI, MSD	280, 265, 279, 73	90
Total oil content (%)		98.70	97.50
Yield of oil		0.32	0.21

Constituent elution order in column HB-5; Kovat’s index, some of the m/z for most abundant peaks in the mass spectrum, percentage of GC/MS library quality assurance of constituent in SEO/LEO, MSD = mass spectra data; RI = retention index relative to C₉–C₂₃ on the column HB-5, t = less than 0.05%.