Two new phenolic constituents (4 and 6), together with four known constituents, methyl ferulate (1), eugenyl-beta-D-glucopyranoside (2), apigenin-7-O-beta-D-glucopyranoside (3), and (E)-resveratrol-3-O-beta-D-glucopyranoside (5) were isolated from the MeOH extract of the aerial part sof Humulus japonicus. The structures of the new compounds were determined by spectroscopic methods to be divarin...

A new product implicated in cereal grain polysaccharide cross-linking has been authenticated by independent synthesis. Saponification of cereal grain fiber releases the RRRS/SSSR-isomer of 2,5-bis-(4-hydroxy-3-methoxyphenyl)-tetrahydrofuran-3,4-dicarboxylic acid. The parent ester logically derives from 8-8-coupling of ferulate followed by water addition to one of the incipient quinone methide m...

Steroid esters of cynnamic acid derivatives have been synthesized by a heterogeneous Wittig reaction under sonochemical conditions from the corresponding triphenylphosphonium bromides and unprotected phenolic aldehyds using K2CO3 as a base. 5 beta-Cholan-3 alpha, 7 alpha, 12 alpha, 24-E-ferulate (11') exhibited a marked inhibitory effect on influenza virus A. The synthetic 3 alpha, 24-E-diferul...

Lignification limits grass cell-wall digestion by herbivores. Lignification is spatially and temporally regulated, and lignin characteristics differ between cell walls, plant tissues, and plant parts. Grass lignins are anchored within walls by ferulate and diferulate cross-links, p-coumarate cyclodimers, and possibly benzyl ester and ether cross-links. Cell-wall degradability is regulated by li...

The follow-up of phytochemical and pharmacological studies of Sida rhombifolia L. (Malvaceae) aims to strengthen the chemosystematics and pharmacology of Sida genera and support the ethnopharmacological use of this species as hypotensive herb. The present work reports phytoconstituents isolated and identified from aerial parts of S. rhombifolia by using chromatographic and spectroscopic methods...

Abstract In this study, lecithin (as a surfactant) was added to promote the inhibitory-mechanism of γ-oryzanol, ethyl-ferulate and ferulic acid (based on interfacial phenomena) so as inhibit oxidation stripped sunflower oil. Monitoring amount water production byproduct showed that content lipid system increased remarkably through progress. Lecithin enhanced critical concentration hydroperoxides...

A feature of cell wall arabinoxylan in grasses is the presence of ferulic acid which upon oxidative coupling by the action of peroxidases forms diferuloyl bridges between formerly separated arabinoxylans. Ferulate cross-linking is suspected of playing various roles in different plant processes. Here we investigate the role of cell wall feruloyaltion in two major processes, that of leaf growth a...

New Zealand propolis is a "European" type propolis obtained by honey bees mainly from exudates of poplar. European type propolis is known to have anti-inflammatory and anti-cancer properties and this activity has been attributed to some of the main constituents such as chrysin and CAPE (caffeic acid phenethyl ester). As part of our studies on how New Zealand propolis might benefit gastro-intest...