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Resumo(s)
The presence of cooper can catalyse oxidation of fatty acid chains, exerting a
deleterious influence over shelf life. Transition metals, which possess two or more
valence states with a sui tab le redox potential, act as pro-oxidants even at
concentrations lower than 0.1 ppm, and could affect the speed of autoxidation and the
direction of hydroperoxide breakdown to volatile le compounds. Being copper a
transition metal that even, in small concentration, is a very potent oxidation catalyst,
can enter a redox reaction, giving rise to consequent lipid peroxidation phenomenon
due to the free radicals producing.
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Contexto Educativo
Citação
Ferreira, Isabel C.F.R.; Barros, Lillian; Soares, Maria Elisa; Bastos, Maria Lourdes; Pereira, José Alberto (2006). Antioxidant activity and phenolic contents of Olea europaea L. leaves sprayed with different cooper formulations. In XV Congresso Nacional de Bioquímica. Aveiro