Pitaya Extracts Induce Growth Inhibition and Proapoptotic Effects on Human Cell Lines of Breast Cancer via Downregulation of Estrogen Receptor Gene Expression

Table 2

Bioactive potential of pitaya evaluated by different methods.

Pitaya	2.0 mg/mL	5.0 mg/mL	10.0 mg/mL	R^2
ORAC assay (μM Trolox/g)	140.50 ± 1.90	560.00 ± 48.90	1079.70 ± 75.20	0.9943
FRAP assay (μmol Fe2SO4/g)	909.20 ± 68.46	1698.64 ± 33.17	2519.36 ± 53.99	0.9621
DPPH assay (% reduction)	33.05 ± 0.32	73.01 ± 0.38	83.99 ± 0.30	0.8892
	Pulp	Peel	Total anthocyanins (fruit)	Total anthocyanins (pitaya extract)
Total anthocyanins (mg/g)	19.14 ± 0.52	8.36 ± 2.70	27.50 ± 1.61	74.65 ± 2.18

Results expressed in mean ± standard error.