Avaliação da capacidade antioxidante em amostras comerciais de canela por métodos voltamétricos e espectrofotométricos
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2022-08-16
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Universidade Federal de Goiás
Resumo
This study aimed to analyze the antioxidant capacity in commercial cinnamon (Cinnamomum sp.), given the growing concern about cellular damage from reactive oxygen species, as well as the desire for healthy and natural food, aiming to compare traditional and innovative methods for the determination of antioxidant capacity. The traditional methods performed were the scavenging of the free radical DPPH (1,1-diphenyl-2-picrylhydrazyl) and the capture of the cation of the radical ABTS (2,2-azinobis-(3-ethylbenzothiazoline-6-sulfonate), measured by the spectrophotometry technique. For electrochemical studies, voltammetric techniques such as CV, DPV and SWV were performed and the Electrochemical Index (IE) was calculated. The results of ABTS, DPPH and IE indicated significant differences between the 17 samples. A matrix was calculated, comparing the methods, where it was possible to observe a high statistical correlation (c.a 0.6) between them. It was concluded that the cinnamon samples have high antioxidant capacity and the methodologies used are equivalent.
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Espécies reativas de oxigênio, Polifenóis, Eletroquímica, DPPH, ABTS, Reactive oxygen species, Polyphenols, Electrochemistry, DPPH, ABTS
Citação
VASCONCELOS, Igor André Alves. Avaliação da capacidade antioxidante em amostras comerciais de canela por métodos voltamétricos e espectrofotométricos. 31 f. Trabalho de Conclusão de Curso (Bacharelado em Farmácia) - Faculdade de Farmácia, Universidade Federal de Goiás, Goiânia, 2022