Table 2.

Essential oil constituents and their percentages in oil from Dioscorea composita and Dioscorea floribunda.

RT	Constituent name	Molecular formula	Type of constituent	% in D. composita	% in D. floribunda
9.87	Alpha terpinene	C10H16	Monoterpene	0.45	0.06
30.6	Butylated hydroxytoluene	C15H24O	Sesquiterpene	7.57	2.68
32.47	Elemol	C15H26O	Sesquiterpene	41.02	22.88
32.52	Elemene	C15H24	Sesquiterpene	0.33	0.31
34.72	Aromadendrine	C15H24	Sesquiterpene	0.82	0.04
36.2	Naphthalene	C15H26	Sesquiterpene	3.71	2.48
36.45	Torreyol	C15H26O	Sesquiterpene	3.91	2.45
36.62	Alpha copaene	C15H24	Sesquiterpene	0.44	0.56
36.97	Azulene	C15H24	Sesquiterpene	2.12	2.31
37.17	Selinene	C15H24	Sesquiterpene	4.32	9.57
37.35	Dodecyl acrylate	C15H28O2	Sesquiterpene	0.95	0.19
37.57	Citronellyl acetate	C12H22O2	Monoterpene	0.32	0.28
38.87	Farnesol	C15H26O	Sesquiterpene	14.81	0.65
39.75	Farnesene	C15H24	Sesquiterpene	0.64	0.18
42.80	Gamma-costol	C15H24O	Sesquiterpene	1.51	1.45
42.92	Beta-costol	C15H24O	Sesquiterpene	0.76	0.78
44.82	Valerenyl acetate	C17H26O2	Sesquiterpene	0.69	0.55
45.52	1-Deoxycapsidiol	C15H24O	Sesquiterpene	0.58	0.43
46.12	1,8-Anhydro-cis-alpha-copaene-8-ol	C15H22	Sesquiterpene	0.49	0.66