Table 6. Pearson’s correlation analysis between extractives, phenolics, and antioxidant activity

Antioxidant	Pearson correlation
	Bottom				Middle				Top
	Extractive	TPC	TFC	TVC	Extractive	TPC	TFC	TVC	Extractive	TPC	TFC	TVC
IC50	0.27	–0.36	–0.69	0.10	–0.07	0.08	–0.21	–0.47	–0.60	0.48	0.52	0.60

TPC: total phenolic content, TFC: total flavonoid content, TVC: total flavanol content.