Table 1.

The retention time and fragment ions of each compound in RBP extract and standards.

Peak	Compounds	[M − H]− (m/z)	RT (min) Sample	RT (min) Standard	Predicted Formula	Calibration Curve	ppm	Linear Range (μg/mg)	R2	Content (mg/g)	LOQ (ng/mL)
1	Quercetin 3-O-glucoside	463.0853	9.94	-	C21H19O12	-	−2.889	-	-	20.21 ± 0.02 a	-
2	Rutin	609.1429	10.39	10.44	C27H29O16	y = 2.6985 × 106x − 412038	−5.299	0.1–100	0.99	35.52 ± 0.01	100
3	Quercitrin	447.0906	10.99	11.10	C21H20O11	y = 3.9898 × 106x − 3144208	−5.982	0.1–100	0.99	21.25 ± 0.01	100
4	Kaempferol 3-O-glucoside	447.0909	11.40	-	C21H19O11	-	−2.435	-	-	19.13 ± 0.02 a	-
5	Quercetin	301.0339	11.71	11.73	C15H9O7	y = 7.263 × 106x − 3671831	−5.002	0.1–100	0.99	38.68 ± 0.01	100
6	Naringenin	271.0603	12.09	-	C15H11O5	-	−3.618	-	-	26.57 ± 0.02 a	-
7	Kaempferol	285.0394	12.46	12.49	C15H9O6	y = 7.640 × 106x − 67030	−3.308	0.1–100	0.99	145.15 ± 0.04	100
8	Isorhamnetin	315.0495	13.38	13.50	C16H11O7	y = 6.1311 × 106x− 2323606	−4.748	0.01–100	0.99	3.25 ± 0.01	10

Note: ^a = Internal standard method.