Table 2.

Identification of standard anti-oxidant compounds in the EtOAc extract of mulberry fruit using UHR 15-T FT-ICR mass spectrometry

#	Standard name	Formula	Calc. [M-H]− [m/z]	Observed [M-H]− [m/z]	Error [mDa]	S/N
1	Gentisic acid	C7H6O4	153.01933	153.01933	0.00	24
2	Gallic acid	C7H6O5	169.01425	169.01426	0.01	10.1
3	Caffeic acid	C9H8O4	179.03498	179.03498	0.00	18.5
4	Luteolin	C15H10O6	285.04046	285.04047	− 0.01	372.3
5	Kaempferol	C15H10O6	285.04046	285.04047	− 0.01	372.3
6	Quercetin	C15H10O7	301.03538	301.03538	0.00	710.1
7	Dihydroquercetin	C15H12O7	303.05103	303.05104	− 0.01	370.6
8	Chlorogenic acid	C16H18O9	353.08781	353.08780	0.01	191.4
9	Quercitrin	C21H20O11	447.09329	447.09326	0.03	53.9
10	Quercetin-3-o-glucoside	C21H20O12	463.08820	463.08820	0.00	467.9
11	Rutin	C27H30O16	609.14611	609.14610	0.01	245.5

A UHR mass profile of the compounds in EAEM was obtained and all 11 SAOx were detected at high mass accuracy with measurement error < 0.05 mDa