Determination of antioxidants in polymeric materials.
A review of methods proposed for the analysis of antioxidants in polymeric materials, cast in the form of a step-by-step examination of the problems involved in any scheme of analysis, with a critical appraisal of the published procedures designed to overcome them.
Ion mobility spectrometry in carbon dioxide
Possibilites d'utiliser CO 2 comme gaz vecteur. Les composes etudies sont une serie d'esters methyle dont le poids moleculaire varie de 88 a 446
Unsaturated lipid peroxidation catalyzed by hematin compounds and its inhibition by vitamin E1
Evidence favoring hematin catalysis over autoxidation as the dominant mechanism of lipid peroxidation in animal tissues is presented. Lipid peroxidation in Erlich ascites tumor cells and isolated electron transport particles has been studied. Random destruction of the cytochromes and a loss of catalytic activity correlate with peroxidation of the electron transport particle.Mixtures of α-, β-, and γ-tocopherols show no synergistic effect. Synergism with ascorbate and citrate greatly enhance the antioxidant activity of α-tocopherol. A tocopherol-ascorbate-glutathione-triphosphopyridine nucleotide couple could act synergistically to inhibit lipid peroxidation in animal tissues.