GC-MS Analysis and Inhibitory Evaluation of Terminalia catappa Leaf Extracts on Major Enzymes Linked to Diabetes

Table 3

GC-MS identified phytochemicals present in T. catappa aqueous leaf extract.

Peak no.	Compound	Retention time (min)	Area (%)	Molecular weight (g/mol)	Formula	Classification of compound
1	2,3-Butanediol	6.399	2.14	90.12	C4H10O2	Alcohol
2	Diglycerol	8.958	3.31	166.17	C6H14O5	Fatty acid
3	4H-Pyran-4-one, 2,3-dihydro-3,5-dihydroxy-6-methyl-	10.105	2.03	144.12	C6H8O4	Phenolics
4	Benzofuran, 2,3-dihydro-	11.115	1.49	120.15	C8H8O	Phenolics
5	2-Methoxy-4-vinylphenol	12.334	0.98	150.17	C9H10O2	Phenolics
6	1,2,3-Benzenetriol	13.444	9.63	126.11	C6H6O3	Phenolics
7	1,2,4-Benzenetriol	13.58	4.65	126.11	C6H6O3	Phenolics
8	2-Cyclohexen-1-one, 3-(hydroxymethyl)-6-(1-methylethyl)-	14.279	0.92	168.23	C10H16O2	Terpenoid
9	9-Oxabicyclo[3.3.1]nonane-2,6-diol	15.295	11.02	158.19	C8H14O3	Phenolics
10, 25	9,9-Dimethoxybicyclo[3.3.1]nona-2,4-dione	15.448	3.36	212.24	C11H16O4	Phenolics
13, 15	9,10-Secocholesta-5,7,10(19)-triene-1,3-diol, 25-[(trimethylsilyl)oxy]-, (3β,5Z,7E)-	15.873	1.61	212.24	C30H52O3Si	Terpenoid
14	8-Methyl-6-nonenoic acid	16.111	1.12	170.25	C10H18O2	Fatty acid
11, 12, 16–19	[1,1′-Bicyclopropyl]-2-octanoic acid, 2′-hexyl-, methyl ester	16.942	5.2	322.50	C21H38O2	Fatty acid methyl ester
21	4-Decenoic acid, 3-methyl-, (E)-	17.322	1.39	184.27	C11H20O2	Fatty acid
23	Cycloheptanone imine, 2,2,7,7-tetramethyl-	17.488	2.52			Alkaloid
24	n-Hexadecanoic acid	18.049	6.77	256.43	C16H32O2	Fatty acid
26	Vitamin E	18.523	6.33	430.70	C29H50O2	Terpenoid
27	Jasmolin II	18.572	0.15	374.50	C22H30O5	Pyrethrin
20, 22, 28	Phytol	18.964	2.77	296.50	C20H40O	Phytosterol
29	9,12-Octadecadienoic acid (Z,Z)-	19.214	6.39	280.40	C18H32O2	Fatty acid
30	17-Octadecynoic acid	19.318	8.31	167.29	C11H21N	Fatty acid