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Automatic flow system for sequential determination of ABTS scavenging capacity ...
Magalhães, Luís M.; Segundo, Marcela A.; Reis, Salette; Lima, José L.F.C.; Tóth, Ildikó V.; Rangel, António O.S.S.In the present work, an automatic flow procedure for the sequential spectrophotometric determination of Folin-Ciocalteu reducing capacity (FC assay) and 2,2 -azinobis(3-ethylbenzothiazoline-6-sulfonic acid) radical cation (ABTS•+) scavenging capacity expressed as the trolox equivalent (TEAC assay) is proposed for a comparative study of antioxidant properties in food products. Exploiting the flexibility of flow ...
Sucrose Inversion – An Experiment on Heterogeneous Catalysis
Adélio Mendes; Fernão D. Magalhães; Luis M. Madeirallustration of heterogeneous catalysis concepts in laboratory courses is not usually simple or economical. For our undergraduate senior lab course we have developed an environmentally friendly experiment dealing with several aspects of heterogeneous catalysis, having in mind the use of readily available and relatively inexpensive equipment, and chemicals on a compact setup, which students can safely operate. Th...
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