Estimation of phytochemical constituents and in vitro antioxidant potencies of Brachychiton populneus (Schott & Endl.) R.Br.

Table 5 Correlation of IC₅₀ values of different antioxidant activities with total phenolic and total flavonoid contents

Antioxidant activity	Correlation R²
Antioxidant activity	TFC	TPC
DPPH scavenging activity	0.856**	0.852**
Hydroxyl radical scavenging activity	0.888**	0.721*
Iron chelating assay	0.988***	0.872**
Nitric oxide scavenging activity	0.949***	0.988***
β-Carotene bleaching activity	0.956***	0.876**
Total antioxidant activity	0.941***	0.977***
Total reducing power assay	0.978***	0.953**

TFC: total flavonoid content; TPC: total phenolic content
Column with different *, **, *** are significantly different at p < 0.05, p < 0.01 and p < 0.001

ISSN: 2661-801X