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Table 2 The results of antioxidant activity analyses in vitro (DPPH, ABTS and FRAP)

From: Discovery and identification of potential anti-melanogenic active constituents of Bletilla striata by zebrafish model and molecular docking

Sample

IC50 values (mg/L)

FRAP

mmol FeSO4/g

DPPH scavenging

ABTS scavenging

PTB

548.24 ± 8.93a

626.49 ± 9.75a

0.11 ± 0.01a

PFB

285.81 ± 5.31b

348.62 ± 6.30b

0.42 ± 0.03b

ETB

65.25 ± 1.85c

78.40 ± 2.51c

2.45 ± 0.05c

EFB

5.94 ± 0.46d

11.69 ± 0.64d

6.92 ± 0.10d

Trolox

3.52 ± 0.27e

3.68 ± 0.31e

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  1. Within a row, different letters (a, b, c, d and e) indicate significant differences with p < 0.05