Synthesis, Characterization and Free Radical Scavenging Properties of Rosmarinic Acid Fatty Esters
作者:Jérôme Lecomte、Luis Javier López Giraldo、Mickaël Laguerre、Bruno Baréa、Pierre Villeneuve
DOI:10.1007/s11746-010-1543-8
日期:2010.6
The hydrophobation of rosmarinic acid with saturated aliphatic primary alcohols of various chain lengths (methanol to eicosanol) was achieved via an acid-catalyzed esterification in the presence of a highly acidic sulfonic resin. The resulting alkyl rosmarinates were isolated, characterized and their global freeradical scavenging activity was determined by the 2,2-diphenyl-1-picrylhydrazyl method
rosmarinic acid produces a variety of compounds with different antioxidant activity due to differences in polarity and thus differences in partitioning in oil, water, and interfacial regions of oil-in-water emulsions (O/W). Therefore, rosmarinic acid and rosmarinate esters provide an interesting tool to study the ability of antioxidant to interact in O/W emulsions. In O/W emulsions, rosmarinic acid (R0)