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1. (Article ID: 12455)
 
Masuda T, Mizuguchi S, Tanaka T, Iritani K, Takeda Y, Yonemori S
Isolation and structure determination of new antioxidative ferulic acid glucoside esters from the rhizome of Alpinia speciosa, a Zingiberaceae plant used in Okinawan food culture
Journal of Agricultural and Food Chemistry 48(5) (2000) 1479-1484
 

An assay-guided isolation gave three antioxidants including two newly identified compounds from the rhizomes of Alpinia speciosa, which is used as an important plant in the food culture of the Okinawa area of Japan. Spectroscopic analysis of the two new compounds revealed them to be new glucoside esters of ferulic acid. The antioxidant activity of the esters was measured using two different methods. Both compounds showed greater activity than that of Trolox in the TLC method; however, one of the compounds showed weaker inhibitory activity than that of Trolox and epicatechin against AMVN-induced methyl linoleate oxidation.

antioxidant; ferulic acid ester; glucoside; Zingiberaceae; rhizome; Alpinia speciosa; epicatechin

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