Análises das atividades biológicas e da composição química de extratos etanólicos dos frutos de diferentes grupos genômicos de bananas (cavendish, Gros Michel e Terra) sob déficit hídrico
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Data
2021-12-17
Autores
Pereira, Paula Roberta Costalonga
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Universidade Federal do Espírito Santo
Resumo
The banana, Musa spp., is cultivated in practically all tropical countries, due to its requirement of constant heat and high humidity. Its study has high social relevance, especially for locations where socioeconomic development also takes place through agricultural activity, such as in Brazil. However, in view of the growing global demand and increasing consumption requirements, choosing the most appropriate cultivar for a given environment and production system is of great importance to obtain good productivity. Thus, the present study aimed to compare the phytochemical aspects and biological activities of ethanol extracts from the peel and pulp of four genotypes of banana in stage 3 of maturation, two commercial cultivars (Terrinha and Grand Naine) and two new cultivars (Red Yade and Ambrosia) selected by INCAPER, under different irrigation conditions. For this, the quantification of the total contents of phenolic compounds, flavonoids and tannins was carried out, and the evaluation of antioxidant activities was carried out using the ABTS, DPPH and Fe2+ ion chelating methods. The phytochemical analyzes revealed that, in general, the peel extracts of banana cultivars concentrated higher levels of phenolic compounds, and the drought condition was an inducer of compound accumulation. With emphasis on the cultivar Terrinha, which presented the highest values of phenols, flavonoids and total tannins. Regarding the antioxidant potential, the peel extracts showed better activities, demonstrating that the presence of bioactive compounds influenced better responses of these extracts in the antioxidant action. These results indicate that banana peel is a potential natural source of bioactive compounds that can be an alternative to nutraceutical or pharmacological resources.
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ABTS , DPPH , atividade antioxidante , compostos fenólicos , atividade quelante , estresse