Determinação da capacidade antioxidante total da mostras de suco de uva tinto integral comercializadas em Vitória da Conquista - BA

Abstract

Antioxidants are extremely important for the development of a healthy and balanced diet, and with the search for practicality in everyday life, there is an increase in the consumption of processed foods, highlighting due to these factors and numerous nutritional properties, grape juice full red. This research aimed to determine the total antioxidant capacity of samples of whole red grape juice sold in Vitória da Conquista – BA. For this, the DPPH• method proposed by Silveira et al. was adapted. (2018), to determine the Total Antioxidant Capacity of samples of whole red grape juice and also compared the Total Antioxidant Capacity of samples of whole red grape juice with the results obtained by the adapted DPPH• method. Six samples of different brands of whole red grape juice obtained from a supermarket in Vitória da Conquista were used. Better Total Antioxidant Capacity results were noted for samples stored in amber glass bottles, intermediate results for those stored in transparent glass and the worst result for those stored in transparent plastic bottles. Finally, the importance of using suitable containers to preserve the sample is highlighted, more specifically their antioxidant capacity and the need to standardize the DPPH• method and the way of expressing the results, making it possible to establish comparisons between results available in the literature, obtained by different researchers on different samples.