Finding of polysaccharide-peptide complexes in Cordyceps militaris and evaluation of its acetylcholinesterase inhibition activity

Authors

C.-H. Tsai
Y.-H. Yen
J.P.-W. Yang

Abstract

Acetylcholinesterase (AChE) inhibition enhances learning and cognitive ability for treatment of Alzheimer's disease. Polysaccharide-peptide 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)-Sepharose CL-6B column chromatography. Polysaccharide-peptide complexes were identified by DEAE-Sepharose CL-6B column chromatography and high-performance gel-filtration chromatography, Fourier transform infrared spectra, amino sugar composition analysis, and β-elimination reaction to identify polysaccharide-peptide bond categories. Separation of CPSP can increase AChE inhibitory activity from the crude polysaccharide of C. militaris. CPSP-F1 and CPSP-F2 exhibited half maximal inhibitory concentrations of 32.2 ± 0.2 mg/mL and 5.3 ± 0.0 mg/mL. Thus, we identified polysaccharide-peptide complexes from C. militaris and suggest CPSP has great potential in AChE inhibition bioassay. © 2014, Food and Drug Administration, Taiwan. Published by Elsevier Taiwan LLC. All rights reserved.

ScienceDirect Link

10.1016/j.jfda.2014.05.006

Recommended Citation

Tsai, C.-H.; Yen, Y.-H.; and Yang, J.P.-W. (2015) "Finding of polysaccharide-peptide complexes in Cordyceps militaris and evaluation of its acetylcholinesterase inhibition activity," Journal of Food and Drug Analysis: Vol. 23 : Iss. 1 , Article 16.
Available at: https://doi.org/10.1016/j.jfda.2014.05.006

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Fulltext URL

https://www.sciencedirect.com/science/article/pii/S1021949814000957/pdfft?md5=41a434c7db0f7f12bdafede127ac181f&pid=1-s2.0-S1021949814000957-main.pdf