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 in softwood smoke. The antioxidant activity is highest for the 2,6-dimethoxyphenols with 4-alkenyl and 4-alkyl groups, which constitute 60-70% of the total amount of dimethoxyphenols. Phenolic antioxidants are scavengers of oxygen radicals and should be considered when health hazards of small-scale incomplete biomass burning are estimated.
Kjällstrand
J
J
Department of Chemical Environmental Science, Chalmers University of Technology, Göteborg, Sweden.
Petersson
G
G
D000393:Air Pollutants / Q000032:analysis*; D000975:Antioxidants / Q000032:analysis*; D018533:Biomass; D002849:Chromatography, Gas; D004784:Environmental Monitoring; D016166:Free Radical Scavengers; D017745:Incineration; D015227:Lipid Peroxidation; D010636:Phenols / Q000032:analysis*; D014934:Wood
D000393:Air Pollutants; D000975:Antioxidants; D016166:Free Radical Scavengers; D010636:Phenols