Determinação da atividade antioxidante e composição físico-química de diferentes partes de quatro frutas brasileiras

Abstract

Brazil boats a large number of native and exotic fruits and the interest in exploiting new species during recent years has arisen because many of them are rich in antioxidants and are thus able to protect the human metabolism against oxidative stress. In addition to the significant impact on human health, antioxidants may also have application in the food industry and pharmaceutical industry. Recent research studies of bioactive compounds in peels and seeds of fruits, considered subproducts, found significant levels of these compounds, which strengthens the possibilities of using these parts of the fruit as a source of nutraceutical compounds and application in the food industry to increase stability and shelf life of food products. Jambolan (Syzygium cumini), Maria Preta (Solanum nigrum), Inga (Inga edulis) and Japanese grape (Hovenia dulcis) are fruits cultivated in Brazil, but few studies have been published concerning their bioactive compounds and antioxidant activity of parts of these fruits individually. Therefore, need to be properly investigated, in order to evaluate its potential as source of antioxidants. AIMS. The aims of this study were to evaluate the antioxidant activity in different parts of Jambolan, Maria Preta, Inga and Japanese grape via the activity of free- radical scanveging of 1,1-diphenyl-2 picrylhydrazyl (DPPH) and ferric reducing antioxidant power (FRAP) assay and quantify the total phenolic compounds, total flavonoids, total anthocyanins and identify fatty acids and phenolic compounds by chromatographic methods.