Table 3.

LC-MS analysis of the peel and pulp extracts of H. undatus.

Compounds	RT	m/z Parent Ion [M-H]-	m/z Daughter Ions	Peel Extract µg/g	Pulp Extract µg/g
3.4-Dihydroxybenzoic acid	5.72	153	109, 91	1.30	0.55
Chlorogenic acid	7.32	355	163, 145, 135, 117, 89	491.03	91.80
Caffeic acid	8.02	179	161, 135, 105	108.94	31.78
Coumaric acid	9.48	163	119, 93, 71	14.31	3.63
Vanillin	9.48	151	136, 123, 107	10.66	3.71
Rutin	9.69	609	301, 300, 271, 255, 179, 151	72.45	5.24
Ferulic acid	10.18	192.8	178, 149, 134, 117, 89	59.86	17.26
Quercetin	13.51	301	273, 245, 179, 151, 121, 107	11.09	ND
Kaempferol	15.29	284.7	257, 255, 239, 227, 211, 185, 117, 93	0.78	0.05

All compounds were identified by comparison with specific phenolic acid and flavonoid standards.