Table 2 IC₅₀ value on PTP1B inhibition activity of melania snail hydrolysates treated by several enzymes

Sample		IC50 (μg/mL)
Ursolic acid (positive control)		16.7
Melania snail hydrolysates	A1)	36.32±1.22)
	P	15.42±1.1
	15.42±1.1	50.45±1.1

A, alcalase; P, protamex: A+P, alcalase+protamex.
Date are representative of three independent experiments as mean±SE.