HPLC fingerprint of flavonoids, enzyme inhibition and antioxidant activity of Newbouldia laevis stem-bark: an in vitro and in silico study

Future Journal of Pharmaceutical Sciences

Table 2 Antioxidant potentials of Newbouldia laevis stem-bark extract

Antioxidant potentials	100 mg/mL	200 mg/mL	300 mg/mL	500 mg/mL	Vit.C (mg/mL)
Lipid peroxidation (%)	44.50^bA ± 1.04	47.96^bA ± 0.34	53.94^cA ± 0.44	36.39^dA ± 0.75	99.33^a ± 1.04
Metal chelating ability (%)	54.86^bB ± 0.90	56.11^bB ± 3.02	68.33^cB ± 2.53	47.18^dB ± 1.28	89.20^a ± 0.85
OH* Scavenging ability (%)	34.12^bA ± 0.66	38.59^bC ± 1.42	60.27^cB ± 1.74	44.53^dB ± 1.44	86.41^a ± 0.22
NO^* Scavenging ability (%)	75.18^bA ± 0.43	77.20^bA ± 0.51	68.40^cB ± 0.77	62.50^cC ± 2.03	80.69^a ± 3.67
SO^* Scavenging ability (%)	55.37^bB ± 0.17	50.40^bB ± 0.99	62.79^cB ± 0.40	49.93^dB ± 0.55	89.38^a ± 2.99
FRAP (%)	49.05^bA ± 2.40	52.41^bB ± 0.76	57.33^cA ± 0.11	43.69^bB ± 0.83	97.52^a ± 2.09

Values are of triplicate tests, in mean ± standard error (SE); values with lowercase are statistically significant (p < 0.05) to Vit. C (Standard); values with different uppercase are statistically significant (p < 0.05) across Concentrations