Table 3. Pearson’s correlation coefficient between total phenolic content, FRAP assay and DPPH free radical scavenging assay (EC50)
Total Phenolic content Pearson correlation
FRAP
EC50
60% ethanol r value 0.969** -0.939**
p value 0.001 0.005
Aqueous r value 0.973** 0.654
p value 0.001 0.159
**Correlation is significant at the 0.05 level (2-tailed)