. 2023 Oct 30;8(45):42511–42521. doi: 10.1021/acsomega.3c05217

Table 3. Antioxidant Activity of RR and WR Extracts^a.

samples	DPPH (mg TE/g dc)	ABTS (mg TE/g dc)	CUPRAC (mg TE/g dc)	FRAP (mg TE/g dc)	MCA (mg EDTAE/g dc)	PBD (mmol TE/g dc)
RRM	33.53 ± 3.77^a	46.89 ± 0.18^c	56.75 ± 0.37^b	40.76 ± 2.75^a	na	0.65 ± 0.02^b
RRI	35.09 ± 1.09^a	52.17 ± 0.61^a	65.62 ± 2.78^a	44.92 ± 0.94^a	na	0.72 ± 0.02^ab
RRD	33.69 ± 0.34^a	50.10 ± 0.29^ab	64.15 ± 0.27^a	42.57 ± 1.54^a	na	0.70 ± 0.02^b
RRMe	28.30 ± 0.35^b	48.22 ± 1.53^bc	60.38 ± 2.09^b	34.81 ± 3.14^b	0.78 ± 0.16^b	0.79 ± 0.06^a
WRM	6.44 ± 0.20^d	7.13 ± 0.26^ef	17.25 ± 0.43^de	11.97 ± 0.18^d	na	0.28 ± 0.01^e
WRI	7.08 ± 0.47^d	6.03 ± 0.67^f	15.36 ± 0.56^e	11.87 ± 0.11^d	na	0.26 ± 0.01^e
WRD	10.11 ± 0.44^cd	9.32 ± 0.16^e	19.35 ± 0.46^d	15.86 ± 0.29^d	na	0.37 ± 0.01^d
WRMe	12.95 ± 0.79^c	21.52 ± 0.27^d	35.97 ± 0.49^c	22.03 ± 0.66^c	3.87 ± 0.39^a	0.55 ± 0.03^c

RRM, red roselle extracted by maceration; RRI, red roselle extracted by infusion; RRD red roselle extracted by decoction; RRMe red roselle extracted by methanol; WRM, white roselle extracted by maceration; WRI, white roselle extracted by infusion; WRD, white roselle extracted by decoction; WRMe, white roselle extracted by methanol. Values are reported as mean ± SD. DPPH: 2,2-diphenyl-1-picrylhydrazyl, ABTS: 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid), CUPRAC: cupric ion reducing antioxidant capacity, FRAP: ferric reducing antioxidant power, MCA: metal chelating activity, PBD: phosphomolybdenum. TEs, Trolox equivalents; EDTAEs, disodium edetate equivalents; dc: dry calyx; na: not active. Different superscript letters in the same column indicate a significant difference (p < 0.05, Tukey’s HSD multiple range post hoc test).

Table 3. Antioxidant Activity of RR and WR Extractsa.

Table 3. Antioxidant Activity of RR and WR Extracts^a.