Four procyanidin trimers have been isolated and their structures unequivocally established as: epicatechin(4~+8)'epicatechin-(4~+8)-catechin (5); epicatechin-(4~-+6)-epicatechin-(4~-8)-catechin (6); epicatechin(4~8)-epicatechin-(4~6)-catechin (7); and epicatechin-(4~-8)-epicatechin-(4~-+8).epic8techin (13), The presence of the first three trimers in Pinus tBeds phloem. and the isolation of both...

Increased lipid peroxidation and reduced glutathione levels in liver of rats fed high sucrose high fat (HSHF) diet were normalized by concomitant administration of (+)-catechin hydrate. Plasma non-enzymatic antioxidants viz. alpha-tocopherol, ascorbic acid and total thiols decrease were also significantly less in rats administered with (+)-catechin hydrate concomitantly with HSHF diet. Thus the...

A 51-year-old man presented with fever and fatigue after 3.5 months of antituberculosis therapy. High-resolution computed tomography of his chest revealed new ground-glass opacities and poorly defined centrilobular nodules. He had undergone catechin inhalation for 1 month. We diagnosed hypersensitivity pneumonitis (HP) based on the clinical course, bronchoscopy and a challenge test. Cases of HP...

this study examined if pre-germination altered the water content and water activity, contents of phytate, total phenolic, (±)-catechin, quercetin and total antioxidant capacity of almond  (prunus dulcis)kernel. raw almond kernels were submerged for 15 hours in water, 0.02 mol dm-3 phosphate buffer solution (ph 5.0) and 0.02 mol dm-3 phosphate buffer solution (ph 7.0) at 25 and 40ºc, respectivel...

an oxidized (+)-catechin so]ution, three dimeric procyanidins, and five (+)-catechin dimers obtained bl' enzymatic oxidation were evaluated by using a chromatographic method. All the polyphenols tested presented a significant inhibitory effect. Nen-competitive inhibition was observed for the oxidized ( + )-catechin so]ution. Some oxidation products were at least as powerfu1 inhibitors as procya...

Cocoa contains high levels of different flavonoids. In the present study, the enantioseparation of catechin and epicatechin in cocoa and cocoa products by chiral capillary electrophoresis (CCE) was performed. A baseline separation of the catechin and epicatechin enantiomers was achieved by using 0.1 mol x L(-1) borate buffer (pH 8.5) with 12 mmol x L(-1) (2-hydroxypropyl)-gamma-cyclodextrin as ...

0963-9969/$ see front matter 2010 Elsevier Ltd. A doi:10.1016/j.foodres.2010.05.015 * Corresponding author at: Institute of Nutraceu (INAF), Université Laval, Sainte-Foy (QC), Canada 2131x7445; fax: +1 418 656 3353. E-mail addresses: [email protected] [email protected] (M. Araya-Farias), Alain.Doy [email protected] (D. Trudel), Bernard.Te Due to the increasing market...

There is increasing evidence to suggest that toxic oxygen radicals play a role in the pathogenesis of ischemia/reperfusion (I/R) injury in the kidney. This study was designed to investigate the effects of catechin, a bioflavonoid, in I/R-induced renal failure in rats. The protective effect of catechin against the damage inflicted by reactive oxygen species (ROS) during renal I/R was investigate...

Background: Obesity as a developing global challenge can be characterized by increase in adipocyte number and size arising from adipogenesis. Control of adipogenesis, as a potential strategy, can prevent and manage obesity. So far, the effectiveness of herbal medicine and active ingredients therapies for obesity and metabolic syndrome treatment has been investigated. In this study, a novel comb...

Background and Objective: Diabetes causes fertility disorders by interfering with the endocrine gland function. There are reports that, green tea and catechins could have anti-oxidant and hypoglycemic properties. Therefore, in the present study, we evaluated the effects of green tea aqueous extract and catechin influence on pituitary-gonadal axis in rat models of type 1 diabetes. Materials & M...