Table 2.
Effect of mulber ry root bark extracts on α-amylase activity

Extracts	Concentration (mg/mL)	α glucosidase inhibitory activity (%)	IC50 1) (mg/mL)
MRE	1	12.80±3.92d	7.86±0.36
	2	21.34±0.87c
	5	39.65±5.07b
	10	58.85±0.89a
MRW	1	ND2)	20.10±0.86
	2	0.50±1.65c
	5	13.60±4.95b
	10	22.29±2.36a
Acarbose	-	-	0.09±0.01

IC₅₀ : Concentration required for 50% inhibition of α-glucosidase activity.
ND : Not detected.