Quantitation of Phenolic Compounds Related to Antioxidant and Antiosteoporosis Activities in Ripe and Unripe Maesil (Prunus mume)

Table 2

Summary of UV, MS, and MS/MS spectra for nine compounds obtained from P. mume fruits.

No.	Retention time (min)	UV absorbance (λ max, nm)	Molecular formula	Molecular weight	Precursor ion (m/z)	Product ion (m/z, int., %)	Identified name
1	27.3	217, 233, 324	C16H18O9	354	[M+H]^+ (355)	89 (21.7), 117 (13.0), 135 (15.2), 145 (21.7), 163 (100.0)	NCA
					[M-H]^− (353)	85 (2.4), 135 (53.9), 173 (2.6), 179 (62.0), 191 (100.0)
2	33.3	258	C13H18O6	270	[M + HCOO]^− (315)	269 (21.2)	BGP
3	34.0	235	C11H16O7	284	[M+Na]^+ (307)	24 (2.6), 177 (2.3), 194 (52.3), 266 (100.0)	GPB
4	36.6	203, 270	C20H27NO11	457	[M + NH4]^+ (475)	69 (70.6), 85 (100.0), 145 (41.0), 163 (47.7), 325 (56.8)	Amygdalin
					[M-H]^− (356)	323 (100.0)
5	38.4	196, 233	C15H22O9	346	[M+H]^+ (347)	43 (1.1), 125 (15.9), 153 (31.7), 185 (100.0)	TMPGP
					[M + HCOO]^−(391)	153 (23.0), 345 (38.0)
6	40.7	190, 260	C14H17NO6	295	[M + NH4]^+ (313)	231 (55.0), 272 (100.0)	Prunasin
					[M + HCOO]^− (340)	161 (100.0), 188 (57.4), 294 (55.3)
7	41.1	202, 277	C16H18O9	402	[M + NH4]^+ (420)	73 (83.5), 91 (100.0), 97 (52.2), 163 (69.6), 295 (78.3)	BAPGP
					[M + HCOO]^−(447)	101 (8.1), 131 (4.3), 269 (13.5), 401 (100.0)
8	52.1	210, 244	C16H18O9	402	[M + NH4]^+ (420)	57 (30.0), 73 (45.0), 91 (100.0), 97 (50.0), 295 (70.0)	BXPGP
					[M + HCOO]^−(447)	59 (4.8), 101 (14.3), 161 (19.0), 269 (59.5), 401 (100.0)
9	52.4	210, 261	C16H18O9	290	[M+H]^+ (291)	95 (0.4), 123 (46.3), 133 (1.9), 139 (100.0)	(−)-Epicatechin