title: Effect of ionizing radiation on antioxidant compounds present in cork wastewater.
abstract: A preliminary study of the gamma radiation effects on the antioxidant compounds present in cork cooking water was carried out. Radiation studies were performed using radiation between 20 and 50 kGy at 0.4 and 2.4 kGy h(-1). The radiation effects on organic matter content were evaluated by chemical oxygen demand. The antioxidant activity was measured by ferric reducing power assay. The total phenolic content was studied using the Folin-Ciocalteau method. Results show that gamma radiation increases both the amount of phenolic compounds and antioxidant capacity of cork cooking water. These results highlight the potential of this technology for increasing the added value of cork waters.
authors.affiliation: Unidade de Física e Aceleradores, IST/ITN, Instituto Superior Técnico, Universidade Técnica de Lisboa, Estrada Nacional 10, 2686-953 Sacavém, Portugal. joanamadureira@itn.pt
authors.forename: J
authors.initials: J
authors.lastname: Madureira
authors.forename: R
authors.initials: R
authors.lastname: Melo
authors.forename: M L
authors.initials: ML
authors.lastname: Botelho
authors.forename: J P
authors.initials: JP
authors.lastname: Leal
authors.forename: I M
authors.initials: IM
authors.lastname: Fonseca
mesh_terms: D000327:Adsorption; D000975:Antioxidants / Q000528:radiation effects*; D057919:Biological Oxygen Demand Analysis; D036681:Fluorescence Recovery After Photobleaching; D007220:Industrial Waste / Q000032:analysis*; D010636:Phenols / Q000032:analysis; D024301:Plant Bark / Q000737:chemistry*; D011839:Radiation, Ionizing; D062065:Wastewater / Q000737:chemistry*
chemical_list: D000975:Antioxidants; D007220:Industrial Waste; D010636:Phenols; D062065:Wastewater