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. 2022 Feb 19;60(1):437–450. doi: 10.1080/13880209.2022.2033797

Table 2.

Polyphenols in O.sanctum, Z.officinale, P.nigrum and combined extracts.

Polyphenols (mg/100gm)
(Mean ± SE)
 O. sanctum  Z. officinale P. nigrum Combination*
Gallic acid 4.02 ± 0.12 84.13 ± 1.2 6.49 ± 0.52 12.91 ± 0.47
Protocatechuic acid 23.53 ± 0.1.2 19.26 ± 0.32 15.38 ± 0.25 22.18 ± 0.62
p-hydroxi benzoic acid 12.61 ± 0.32 0.77 ± 0.11 3.35 ± 0.42 8.59 ± 0.43
Catechin 356 ± 2.02 9.70 ± 0.14 28.15 ± 0.62 194 ± 1.66
Caffeic acid 55.68 ± 1.21 1.43 ± 0.01 3.92 ± 0.23 33.32 ± 1.32
Sinapic acid 18.58 ± 0.12 0.95 ± 0.06 2.54 ± 0.31 12.41 ± 0.91
Ferulic acid 7.17 ± 0.23 2.82 ± 0.35 10.45 ± 0.64 8.17 ± 0.33
p-Coumaric acid-4 BDL 3.84 ± 0.11 0.80 ± 0.01 0.82 ± 0.04
Ellagic acid 18.14 ± 0.21 14.64 ± 10.62 2.47 ± 0.26 11.39 ± 0.62
o-Coumaric acid-2 10.19 ± 0.96 7.06 ± 0.14 1.60 ± 0.02 5.22 ± 0.34
Luteolin-7O-Glucoside 430 ± 2.3 BDL BDL 266 ± 1.8
Myricetin 43.70 ± 1.2 BDL 2.52 ± 0.34 27.52 ± 0.56
Resveratrol 270 ± 2.1 2.72 ± 0.12 BDL 164 ± 2.8
Daidzein BDL BDL 2.26 ± 0.41 3.13 ± 0.24
Quercetin BDL BDL BDL BDL
Luteolin 64.10 ± 1.02 BDL 2.23 ± 0.61 39.09 ± 0.99
Naringenin 6.43 ± 0.31 BDL 24.95 ± 1.51 12.99 ± 0.53
Apigenin 132 ± 3.11 BDL BDL 79.57 ± 1.65
Kaempferol 57.03 ± 1.21 BDL BDL 36.78 ± 0.87
Hesperetin 164 ± 2.31 BDL 7.06 ± 0.97 93.66 ± 2.56
Flavone BDL 21.89 ± 0.91 88.18 ± 1.8 33.36 ± 1.65

*Combination (animal dose: 1450 mg/kg.bwt) = O. sanctum (850 mg [58.6%]) + Z. officinale (500 mg [34.6%]) + P. nigrum (100 mg [7.0%]; BDL: Below Detectable Level.