Acetylcholinesterase (AChE) inhibition enhances learning and cognitive ability for treatment of Alzheimer's disease. Polysaccharideepeptide complexes were identified in Cordyceps militaris (CPSPs) and characterized for their AChE inhibitory properties. Three polymers (CPSP-F1,-F2, and -F3) were extracted and separated by ultrasound-assisted extraction and diethylaminoethanol (DEAE)eSepharose CL…