Table 2 Estimation of plant extraction yield, total phenolics, flavonoids, antioxidant capacity and reducing power of Alnus nitida bark
Sample | Yield (g)* | Total phenolic contents expressed as gallic acid equivalents (mg/g of extract) | Total flavonoid contents expressed as rutin equivalents (mg/g of extract) | Total antioxidant capacity expressed as ascorbic acid equivalents (mg/g of extract) | Total reducing power expressed as ascorbic acid equivalents (mg/g of extract) |
|---|---|---|---|---|---|
ANM | 86 | 631.5 ± 1.7 | 221.5 ± 2.5 | 32.6 ± 1.2a | 125.5 ± 5.0a,b |
ANH | 7 | 0.00 | 0.00 | 3.5 ± 0.5c | 36.0 ± 2.6d |
ANC | 24 | 527 ± 3.1 | 98.6 ± 1.61 | 7.6 ± 0.9c | 45.5 ± 3.3d |
ANE | 21 | 607 ± 1.97 | 211.2 ± 2.4 | 19.0 ± 0.6b | 113.1 ± 2.7b,c |
ANA | 33 | 591.2 ± 1.3 | 114.8 ± 1.8 | 16.5 ± 1.1b | 102.0 ± 3.3c |