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

Table 2

Analytical performance data of 15 phenolic compounds by DLLME-UPLC-MS/MS.

Compounds	Linear equation	R^2	Linear range (μg /mL)	LOD (μg/g)	LOQ (μg/g)	Enrichment factor
Gallic acid	y = 0.0939x − 0.0194	0.9770	0.91–27.3	0.1035	0.3106	182
Neochlorogenic acid	y = 0.0175x − 0.0011	0.9908	0.94–47.00	0.0510	0.1531	171
Catechin	y = 0.0563x − 0.0025	0.9970	1.17–58.50	0.0602	0.1805	176
Chlorogenic acid	y = 0.0568x − 0.0086	0.9916	1.06–31.80	0.0251	0.0752	172
p-hydroxybenzoic acid	y = 0.4924x − 0.0266	0.9989	1.21–63.25	0.0649	0.1947	169
Epicatechin	y = 0.0628x − 0.0028	0.9964	0.91–45.50	0.0436	0.1308	174
Caffeic acid	y = 1.3728x − 0.0169	0.9981	0.90–45.00	0.0384	0.1153	173
Syringic acid	y = 0.3124x − 0.0384	0.9966	1.35–40.50	0.0724	0.2173	194
Ferulic acid	y = 0.9826x + 0.0005	0.9996	1.00–49.75	0.0324	0.0973	169
Rutin	y = 0.0222x − 0.0013	0.9977	0.92–46.00	0.0379	0.1137	169
Coumarin	y = 14.74x + 0.5964	0.9948	0.91–22.75	0.0601	0.1803	169
Resveratrol	y = 1.9649x + 0.1996	0.9854	1.31–32.75	0.0207	0.0621	171
Phlorizin	y = 1.8231x + 0.0559	0.9965	0.96–24.00	0.0524	0.1572	162
Quercitrin	y = 1.9759x + 0.1788	0.9726	0.74–18.50	0.0183	0.0549	173
Cinnamic acid	y = 1.9043x + 0.1355	0.9939	1.06–31.65	0.0446	0.1339	162