The aim of this study was to determine the content of bioactive compounds and antioxidant activity present in three fruit species from the Brazilian Cerrado: carnauba (Copernicia prunifera (Mill.) H.E. Moore), murici (Byrsonima crassifolia L. Rich)and oiti (Licania tomentosa (Benth) Fritsch). Among analyzed fruits, oiti showed the highest total phenolic content (1236.42 ± 34.06 mg GAE 100 g-1) followed by murici (468.90 ± 27.30 mg GAE 100 g-1) and carnauba (314.44 ± 9.50 mg GAE 100 g-1). Regarding the antioxidant activity, murici showed 4350.31 ± 1.85 µmol TEAC.100 g-1 and oiti showed 14721.69 ± 0.85 µmol TEAC.100 g-1. In addition, high content of anthocyanins was verified in carnauba (9.35 ± 0.00 mg-cy-3-glu.100 g-1), as well as carotenoids (20.0 ± 1.23 mg-ß-carot.100 g-1) and vitamin C (58.60 ± 1.32 mg.100 g-1) in murici. In conclusion, data obtained add valuable information to the current knowledge on the nutritional and functional features of fruits from the Brazilian Cerrado that have been scarcely explored, such as those analyzed, which showed high content of bioactive compounds and antioxidant activity.
Brazil has the largest biodiversity of any country in the world, which includes a large number of fruit species. Cerrado, a Brazilian biome that has a large number of underexploited native and exotic fruit species, is of potential interest to the agroindustry and a possible future source of income for the local population. This paper presents the centesimal composition, phenolic contents, anthocyanin, flavonoids, and antioxidant activity of Genipa americana L. fruit. The results indicated the following composition: moisture (75.00%), lipids (1.60%), proteins (0.67%), carbohydrates (20.50%), and ash (2.20%). The Genipa americana fruit contained considerable amounts of phenolic compounds (857.10 mgGAE.100 -1 g) and flavonoids (728.00 mg.100 -1 g), which contribute to its high antioxidant activity. This study highlights the potential of this fruit as an important source of both nutritional and bioactive compounds available in the native Brazilian flora.
The present study aimed to determine the content of minerals, bioactive compounds and the antioxidant activity of 'Cajuí' (Anacardium humille St. Hill) during the ripening. The fruits were collected in three maturity stages. The content of the minerals, total phenolics, proanthocyanidin and carotenoids contents as well as the antioxidant activity, ABTS (2,2-azinobis-3-ethylben-zothiazoline-6-sulphonic acid), DPPH (2,2-diphenyl-1-picrylhydrazyl) and FRAP ( ). The 'cajuí' exhibited high antioxidant activity and content of bioactive compounds, especially for the immature stage. Among the minerals, 'cajuí' showed high levels of K (potassium), P (phosphorus), and Mg (magnesium). Thus, the cajuí presents itself as a good source of antioxidant compounds which can be exploited by the food industry as an ingredient for the development of a food with functional properties and the pharmaceutical industry, as phytochemical.
Atualmente, diversas propriedades bioativas de alimentos vegetais têm sido atribuídas aos compostos fenólicos, presentes na composição destes. Desta forma, considerando os aspectos de qualidade composicional e bioativos da cajuína e do mel, além do fato destes serem produtos naturais bastante consumidos no estado do Piauí, este estudo objetivou analisar o teor de compostos fenólicos totais e atividade antioxidante do mel e da cajuína produzidos no estado do Piauí. Os produtos analisados foram adquiridos no mercado consumidor da cidade de Teresina-PI. Foram utilizadas três marcas e dois diferentes lotes, mantidas lacradas e em temperatura ambiente até o momento das análises. Analisou-se em triplicata as características físico-químicas (pH, sólidos solúveis e acidez), o teor de fenólicos totais e atividade antioxidante. Para análise estatística, foi criado um banco de dados no SPSS, versão 17.0. Os resultados foram efetuados em triplicata e apresentados em tabelas com as respectivas médias e desvios-padrão de cada variável estudada. Realizou-se a Análise de Variância e as médias foram comparadas pelo teste t de Tukey para determinação da diferença significativa entre as médias ao nível de 5% de significância. Os resultados demonstraram que todas as cajuínas e méis avaliados possuem características físico-químicas em conformidade com o preconizado pela legislação vigente referente ao controle de qualidade. E ambos os produtos apresentaram teor de compostos fenólicos e atividade antioxidantes significativos. Assim ressalta-se a importância do desenvolvimento de pesquisas complementares objetivando a quantificação e identificação desses compostos fenólicos por cromatografia, tendo em vista que cada composto desempenha uma função específica no organismo.
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