Chemoprotection by Phenolic Antioxidants

Phenolic antioxidants.

Phenolic antioxidants in wood smoke.

Ten prominent dimethoxyphenols were determined in birchwood smoke from choked and open laboratory burning and in chimney smoke from a tiled stove. The structures of the methoxyphenols are similar to those of the well-known tocopherol and ubiquinol antioxidants. The 2,6-dimethoxyphenols characterising hardwood smoke are stronger antioxidants than the corresponding 2-methoxyphenols present mainly...

Inhibition of myeloperoxidase-catalyzed tyrosylation by phenolic antioxidants in vitro.

We have developed an in vitro assay system for the evaluation of the inhibitory effects of phenolic antioxidants on myeloperoxidase (MPO) activity. The formation of dityrosine from the MPO/H2O2/L-tyrosine system was used as an indicator of the MPO activity. Because the buffer system used does not include chloride ion, this assay has the advantage of exclusion of direct reaction between an antio...

Berry Phenolic Antioxidants – Implications for Human Health?

Antioxidants present in the diet may have a significant effect on the prophylaxis and progression of various diseases associated with oxidative stress. Berries contain a range of chemical compounds with antioxidant properties, including phenolic compounds. The aim of this review article is to provide an overview of the current knowledge of such phenolic antioxidants, and to discuss whether thes...

Effect of oxidant stressors and phenolic antioxidants

24 BACKGROUND. There are few studies dealing with the relationship between 25 oxidative stress and ochratoxin A (OTA). In this work we have analyzed the effect 26 of the oxidant stressor menadione and the antioxidpmants 3,5-di-tert-butyl-427 hydroxytoluene (BHT), catechin, resveratrol and a polyphenolic extract on growth, 28 generation of reactive oxygen species (ROS), OTA production and gene 2...