α-Glucosidase inhibitory terpenoids from Potentilla fulgens and their quantitative estimation by validated HPLC method

Autor: Deepak Kumar, Rina Ghosh, Bikas C. Pal
Jazyk: angličtina
Rok vydání: 2013
Předmět:
Zdroj: Journal of Functional Foods, Vol 5, Iss 3, Pp 1135-1141 (2013)
Druh dokumentu: article
ISSN: 1756-4646
DOI: 10.1016/j.jff.2013.03.010
Popis: Potentilla fulgens is used extensively in traditional system of medicine and as a food additive for the treatment of diabetes mellitus and other ailments. The present study was aimed to isolate and identify the constituents with α-glucosidase inhibitory activity. The methanolic extract demonstrated potent inhibitory activity against α-glucosidase. Fractionation and purification by silica gel column chromatography and HPLC led to the isolation of five terpenes, namely, hyptadienic acid, tormentic acid, rosamultic acid, 2α,19α-dihydroxy-3-oxo-12-ursen-28-oic acid β-d-glucopyranoside ester and kajiichigoside F1 for the first time from this plant. Among these hyptadienic acid, which is an A-ring contracted triterpenoid, was found to be the most potent against α-glucosidase. This suggests that the A-ring contracted triterpenes may serve as a class of triterpenes with α-glucosidase inhibitory activity. Also, identification of enzyme inhibitory activity of these constituents explains the traditional use of P. fulgens in the management/treatment of diabetes. Quantitative estimation of the compounds was performed using HPLC and the method was validated.
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