. 2023 Jul 23;12(7):1475. doi: 10.3390/antiox12071475

Table 4.

Contents of major phenolic compounds in different kiwifruit extracts.

Compounds	Regression Equation	R²	Linear Range (μg/mL)	Retention Time (min)	UDE (mg/g DW)	UEE (mg/g DW)	EE (mg/g DW)
GA	y = 72.203x + 645.05	0.9962	2.4–38.5	8.32	0.951 ± 0.042 ^a	0.287 ± 0.019 ^b	0.108 ± 0.034 ^c
PA	y = 27.56x + 604.29	0.9965	4.9–76.9	16.55	1.226 ± 0.022 ^a	0.384 ± 0.053 ^b	0.026 ± 0.037 ^c
PB1	y = 1.6993x + 49.478	0.9984	4.9–76.9	21.63	1.947 ± 0.134 ^a	0.855 ± 0.062 ^b	0.276 ± 0.012 ^c
Ca	y = 7.0168x + 48.739	0.9994	4.9–76.9	24.93	0.914 ± 0.102 ^a	0.259 ± 0.079 ^b	0.086 ± 0.011^c
PB2	y = 6.4073x + 350.22	0.9971	4.9–76.9	28.76	4.799 ± 0.128 ^a	1.635 ± 0.081 ^b	0.644 ± 0.057 ^c
EC	y = 10.786x + 121.29	0.9978	4.9–76.9	30.4	1.583 ± 0.164 ^a	1.264 ± 0.139 ^b	0.470 ± 0.063 ^c
NCHL	y = 45.262x + 970.83	0.9969	4.9–76.9	34.09	1.512 ± 0.112 ^a	0.732 ± 0.097 ^b	0.280 ± 0.047 ^c
CHL	y = 35.003x + 425.98	0.9988	4.9–76.9	36.76	0.732 ± 0.093 ^a	0.207 ± 0.062 ^b	0.069 ± 0.013 ^c
QGlu	y = 23.737x + 319.63	0.9962	4.9–76.9	54.12	0.708 ± 0.064 ^a	0.222 ± 0.034 ^b	0.074 ± 0.018 ^c
QRha	y = 18.549x + 227.08	0.9961	4.9–76.9	57.45	0.696 ± 0.051 ^a	0.271 ± 0.077 ^b	0.088 ± 0.024 ^c
Total content (mg/g DW)					15.067 ± 1.143 ^a	6.122 ± 0.074 ^b	2.218 ± 0.271 ^c

GA, gallic acid; PA, protocatechuic acid; PB1, procyanidin B1; Ca, catechin; PB2, procyanidin B2; EC, epicatechin; NCHL, neochlorogenic acid; CHL, chlorogenic acid; QRha, Quercetin-3-rhamnoside; QGlu, quercetin-3-O-glucoside; UDE, the thinned kiwifruit extract prepared by ultrasound-assisted deep eutectic solvent extraction; UEE, the thinned kiwifruit extract prepared by ultrasound-assisted ethanol extraction; EE, the thinned kiwifruit extract prepared by conventional organic solvent extraction; different letters (a–c) in the same column indicate significant differences at p < 0.05 determined by ANOVA.