From: Effects of curcuminoids identified in rhizomes of Curcuma longa on BACE-1 inhibitory and behavioral activity and lifespan of Alzheimer’s disease Drosophila models
Material
% inhibition
2 mg/ml
1 mg/ml
0.5 mg/ml
Methanol extract
100
65
57
Hexane-soluble fraction
85
48
43
Chloroform-soluble fraction
81
71
Ethyl acetate-soluble fraction
84
76
70
Butanol-soluble fraction
82
26
3
Water-soluble fraction
0