Simultaneous Determination of Fifteen Polyphenols in Fruit Juice Using Ultrahigh-Performance Liquid Chromatography-Tandem Mass Spectrometry Combining Dispersive Liquid-Liquid Microextraction

Table 1

Quantitative information and their related mass conditions of polyphenols.

No.	Compounds	Structure	Precursor/product ion (m/z)	Collision energy (eV)	Polarity	Retention time (Rt, min)
1	Gallic acid		168.9/125.0	10	Negative	6.05
2	Neochlorogenic acid		352.8/190.8	15	Negative	10.61, 10.28
3	Catechin		288.8/108.9	20	Negative	11.95
4	Chlorogenic acid		352.8/190.8	10	Negative	12.74, 14.05
5	p-Hydroxybenzoic acid		138.9/95.0	10	Positive	13.04
6	Epicatechin		288.8/108.9	20	Negative	13.76
7	Caffeic acid		179.0/135.0	15	Negative	14.00, 14.40
8	Syringic acid		199.0/140.0	10	Positive	14.48
9	Ferulic acid		194.9/177.0	5	Positive	16.31
10	Rutin		632.9/330.7	30	Positive	17.10
11	Coumarin		147.0/91.0	25	Positive	17.39
12	Resveratrol		226.9/142.9	25	Negative	17.46, 18.92
13	Phlorizin		434.8/272.8	5	Negative	17.65
14	Quercitrin		446.8/299.8	20	Negative	18.14
15	Cinnamic acid		149.0/131.0	5	Positive	20.18

Those analytes with two retention times have isomers, and the peak area labelled was used for quantification.