Effect of Betula pendula Leaf Extract on α-Glucosidase and Glutathione Level in Glucose-Induced Oxidative Stress

Table 4

Radical scavenging activity for DPPH (IC₅₀ DPPH RSA) and ABTS (IC₅₀ ABTS RSA) free radical, chelating activity (ChA), total antioxidant activity (TAA), ferric-reducing antioxidant power (FRAP), and α-glucosidase activity (IC₅₀ AG) of B. pendula ethanolic (BP-E) and aqueous (BP-W) leaf extract.

Extract	IC50 DPPH RSA; (μg/mL)	IC50 ABTS RSA; (μg/mL)	IC50 ChA; (μg/mL)	TAA; (mg AAE/g DW)	FRAP; (mg TE/g DW)	IC50 AG; (mg/mL)
BP-E
BP-W
Standard				n.a.	n.a.

Differences within column (samples connected by the same capital letter are statistically different at ).
AAE: ascorbic acid equivalents; TE: Trolox equivalents.
Standard: BHA; Trolox; EDTA; Acarbose.
n.a.: not applicable.