Phenolic Profiling of Berries Waste and Determination of Their Antioxidant Potential

Table 1

Estimation of phenolic content and antioxidant activity present in berries waste.

Antioxidant assays	Blueberries waste	Strawberries waste	Blackberries waste	Raspberries waste
TPC (mg GAE/g)	1.97 ± 0.16^a	1.13 ± 0.04^a	0.85 ± 0.05^b	0.73 ± 0.01^b
TFC (μg QE/g)	220.43 ± 13.15^a	7.13 ± 0.36^b	9.38 ± 0.19^b	16.93 ± 1.20^b
TTC (μg CE/g)	16.47 ± 0.98^a	9.87 ± 0.29^b	6.59 ± 0.02^c	5.95 ± 0.51^c
DPPH (mg AAE/g)	2.23 ± 0.17^a	1.56 ± 0.11^b	0.76 ± 0.02^c	2.01 ± 0.04^a
FRAP (μg AAE/g)	68.71 ± 11.11^a	4.15 ± 0.17^d	43.56 ± 5.08^b	30.13 ± 1.83^c
ABTS (mg AAE/g)	1.79 ± 0.09^a	0.63 ± 0.02^b	1.12 ± 0.08^a	0.70 ± 0.05^b
TAC (mg AAE/g)	1.22 ± 0.03^a	0.62 ± 0.01^b	0.50 ± 0.02^b	0.33 ± 0.02^c

The data shown in the table as mean ± standard deviation (n = 3); lettering (^a,b,c,d) indicated the significant difference in the means () using a one-way analysis of variance (ANOVA) and Tukey’s HSD test. GAE: gallic acid equivalents; QE: quercetin equivalents; CE: catechin equivalents; AAE: ascorbic acid equivalents; TPC: Total phenolic content; TFC: total fl usingd content; TTC: total tannin content; DPPH: 2,2′-diphenyl-1-picrylhydrazyl; FRAP: ferric reducing antioxidant power, ABTS: 2,2′-azino-bis-(3-ethylbenzothiazoline-6-sulfonic acid; TAC: total antioxidant content.