Table 1.

Chemical composition of n-hexane-soluble fraction from purple I. batatas leaves.

Rt (min) a	RI b	Compound	Peak Area (%)	Classification
12.04	860	Pentanoic acid	0.37	acid
14.21	927	Benzaldehyde	0.22	aldehyde
15.11	955	Hexanoic acid	0.79	acid
15.25	959	6-Methyl-5-hepten-2-one	0.68	ketone
15.89	978	1,2,4-Trimethylbenzene	0.61	aromatic compound
16.44	994	Decane	0.37	alkane
16.77	1004	1,2,3-Trimethylbenzene	1.23	aromatic compound
16.86	1007	2-Ethylhexanol	0.96	alcohol
17.64	1033	m-Diethylbenzene	0.29	aromatic compound
17.72	1036	m-Propyltoluene	0.49	aromatic compound
17.93	1043	o-Cymene	1.30	aromatic compound
18.21	1052	o-Propyltoluene	0.31	aromatic compound
18.53	1062	2-Ethyl-1,4-dimethylbenzene	1.06	aromatic compound
18.59	1063	2-Ethyl-1,3-dimethylbenzene	2.25	aromatic compound
18.70	1067	3-Methyldecane	0.20	alkane
18.87	1072	6-Methyl-3,5-heptadien-2-one	2.02	ketone
19.06	1078	Nonanal	0.50	aldehyde
19.41	1088	4-Ethyl-1,2-dimethylbenzene	0.83	aromatic compound
19.59	1094	Undecane	2.59	alkane
19.79	1100	1,2,3,4-Tetramethylbenzene	3.63	aromatic compound
19.90	1104	1,2,4,5-Tetramethylbenzene	4.38	aromatic compound
20.39	1121	(+)-2-Bornanone	1.82	monoterpene
20.54	1127	1,3-Diethyl-5-methylbenzene	0.58	aromatic compound
20.73	1133	l-Menthone	4.10	monoterpene
20.86	1138	1-Ethyl-3,5-dimethylbenzene	1.52	aromatic compound
21.46	1159	Butoxyethoxyethanol	0.31	alcohol
21.62	1104	Naphthalene	1.60	aromatic compound
22.15	1182	Decanal	0.23	aldehyde
22.26	1186	1-Dodecene	1.45	alkene
22.59	1196	Dodecane	1.71	alkane
25.20	1289	Methyl 4-decenoate	0.59	ester
25.48	1297	Tridecane	0.15	alkane
25.66	1303	Methyl decanoate	11.08	ester
26.85	1356	Methyl cinnamate	14.12	ester
27.46	1382	Bicyclogermacrene	0.54	sesquiterpene
27.52	1384	α-Copaene	0.94	sesquiterpene
27.62	1388	trans-2-Tetradecene	0.23	alkene
27.74	1393	β-Elemene	0.72	sesquiterpene
27.85	1398	Tetradecane	0.43	alkane
27.98	1404	Methyl undecanoate	0.11	ester
28.06	1408	(−)-Isoledene	0.18	sesquiterpene
28.46	1429	Isocaryophyllene	0.13	sesquiterpene
28.61	1437	β-Cubebene	0.12	sesquiterpene
29.25	1470	Aromadendren	0.38	sesquiterpene
29.42	1479	Germacrene D	0.16	sesquiterpene
29.71	1493	β-Selinene	0.81	sesquiterpene
29.96	1506	Methyl laurate	14.24	ester
31.38	1578	1Z,5E-7-Dodecatriene	0.77	alkene
31.53	1586	(-)-β-Caryophyllene epoxide	2.69	sesquiterpene
		Total	86.79

^a R_t: Retention time (min); ^b RI: Retention index, using paraffin (C₅–C₂₅) as reference.