Table 3.

Volatile compounds in lyophilized hydrophilic extracts prepared from S. davisii Muirhead aerial plant parts.

						Relative concentration (%)
Number	Retention time	Name of compound	Molecular formula	Molecular mass	Fragment ions	Stem	Leaf	Flower
						1	15.4	Dehydroxylinalool oxide isomers	C10H16O	152	55, 67 82, 96, 110, 123, 137	32.88	45.41	T
2	16.3	Octanal	C8H16O	128	57, 69 81, 84, 100, 110	T	T	3.88
3	16.5	Cymene	C10H14	134	51, 77 91, 119, 134	3.76	4.75	ND
4	18.3	Cyclohexene	C10H18O	154	69, 81 93, 121	T	T	ND
5	19.4	Nonanal	C9H18O	142	57, 70,82 98, 114, 124	2.00	2.30	22.01
6	21.7	Cylodecane	C10H20	140	55, 70 83, 97, 111, 140	T	T	ND
7	24.6	2-Decenal	C10H18O	154	55, 70 83, 98, 110, 136	T	T	16.39
8	26.9	2,4-Decadienal	C10H16O	152	67, 81 95, 123, 152	T	T	4.04
9	27.7	2-Undecenal	C11H20O	168	55, 70 83, 97, 121, 166	T	T	18.58
10	31.6	2,6-Di-tert-butylphenol	C14H22O	206	57, 74 91, 163, 191, 206	ND	ND	7.61
11	43.6	Palmitic acid ethylester	C18H36O2	284	55, 88 101, 115, 157, 199, 241, 284	T	T	4.08

T: traces; ND: not detected.