Screening for antioxidant and antibacterial activities of phenolics from Golden Delicious apple pomace

BMC Chemistry

Table 4 Identification and quantification of individual phenols in ethyl acetate extract

Peaks	RT	Individual phenols	Standard equations/[Y = ax + b]	R²	Contents (mg/g powder)
1	3.95	Gallic acid	Y = 0. 208 x + 0.009	0.9987	0.06^f ± 0.01
7	24.64	Chlorogenic acid	Y = 0.108 x + 0.006	0.9981	0.06^f ± 0.01
8	25.97	Procyanidin B₂	Y = 0.541 x + 0.097	0.9993	0.14^c ± 0.02
11	28.82	Phloridzin	Y = 0.935 x + 0.470	0.9992	0.86^a ± 0.25
12	29.64	Syringin	Y = 0.293 x + 0.017	0.9943	0.07^ef ± 0.02
13	30.26	Hyperin	Y = 0.489 x + 0.038	0.9983	0.11^d ± 0.08
14	30.66	Quercetin-3-O- pentoside	Y = 0.453 x + 0.036	0.9961	0.11^d ± 0.07
15	31.13	Quercetin-3-rhamnoside	Y = 0.503 x + 0.056	0.9957	0.11^d ± 0.07
18	32.90	Phloretin	Y = 0.830 x + 0.215	0.9995	0.78^b ± 0.23
20	35.37	Quercetin	Y = 0.301x + 0.028	0.9975	0.08^e ± 0.01

Values are expressed as the mean ± standard deviation (n = 3)
Y is the relative absorption area of corresponding reference standard at 280 nm. x is the content of corresponding reference standard
RT retention time (min), R ² determination coefficient
^a–fColumn wise values with different superscripts of this type denote significant differences (P < 0.05)

ISSN: 2661-801X