Influence of Conventional and Ultrasonic-Assisted Extraction on Phenolic Contents, Betacyanin Contents, and Antioxidant Capacity of Red Dragon Fruit (Hylocereus polyrhizus)

Table 2

Correlation of the phytochemical contents with different antioxidant indicators.

	Scavenging activity	Reducing power
Total phenolic content	0.810	0.990
Total flavonoid content	0.549	0.890
Betacyanin content	0.382	0.381

Correlation is significant at the 0.05 level (1-tailed).