Efeito da luz na atividade antioxidante de refrigerante sabor guaraná acondicionado em diferentes embalagens

Abstract

The interest in studying the antioxidant activity of foods and beverages has been growing in recent years. The present work had as objective to analyze the light effect on the antioxidant activity of the guarana flavored soft drink conditioned in different types of packaging. Antioxidant analysis resulted in a range of values between 110.00 and 225.63 μmol of trolox equivalent per liter of sample. For the analysis of total phenolic content, the values obtained varied between 17.65 and 40.40 mg of gallic acid per liter of sample. The results obtained for vitamin C, titillated acidity and pH varied between 409.72 and 717.26 μg AA per mL of sample, 0.11152 and 0.1395 g of citric acid per L of sample and 3,745 and 3,795 respectively. The main objective of the study was reached, since there was a significant difference at the 95% confidence level with respect to the antioxidant activity of the samples, in parallel to their type of storage, either under the light or under ambient light.