Triagem fitoquímica e atividade antioxidante de Costus spicatus (Jacq.) S.w.

Abstract

Phytochemical screening and antioxidant activity of Costus spicatus (Jacq.) Sw. The objective of this work was to evaluate the phytochemical profile and the antioxidant activity comparing the results between different organs of Costus spicatus. We used the stems, leaves and flowers of Costus spicatus harvested at the State University of Norte Fluminense "Darcy Ribeiro" in the city of Campos dos Goytacazes, Rio de Janeiro, Brazil. The different organs were evaluated for antioxidant activity and phytochemical profile in the hexane, ethyl acetate and butanol fractions. The results obtained proved the presence of triterpenes and steroids (Liebermann-Burchard), flavonoids (Shinoda), saponins (foaming index), alkaloids (Dragendorff) and tannins (ferric chloride). We demonstrated the potential antioxidant activity. We concluded that Costus spicatus presented all classes of metabolites studied, among which some already have their biological activity known by the literature, being necessary the performance of quantitative and research studies that demonstrate their pharmacological effects, thus contributing to the development of new drugs.

Research Article Antioxidant activity and chemical composition of oleoresin from leaves and flowers of Brunfelsia uniflora.

“…Azevedo et al (2014) verified that Costus spicatus leaf extracts present triterpenes, steroids, flavonoids, saponins, whereas the flower has tannins and alkaloids. Andrade et al (2014) reported that Smallanthus sonchifolius leaves presented phenolic content ranging from 88 to 94% more than flowers using two different extraction methods (infusion and cooking); also IC 50 for DPPH was from 2 to 28% lower for leaves than flowers, showing a greater leaf antioxidant potential.…”

Prospecção fitoquímica, teor de fenóis totais e atividade antiradicalar de extrato e frações de folhas de Annona sylvatica (Annonaceae)

“…As saponinas foram detectadas no extrato em EtOH de folhas de A. sylvatica a partir da formação de espuma persistente, o efeito espumante é devido as suas propriedades emulsificantes e da diminuição da tensão superficial do líquido (Azevedo et al, 2014). As saponinas foram identificadas na prospecção fitoquímica de extratos de folhas de outras espécies de Annona, como A. reticulata (Babu e Lawrence, 2014), A. squamosa (Neethu Simon et al, 2016) e A. senegalensis (Ijaiya et al, 2014).…”

Quantification of phenolic derivatives and antioxidant activity of the leaves of Chamaecrista diphylla (L.) Greene (Fabaceae))

“…However, in F-AcOEt, it is suggested the presence of flavones, flavonoids and low molecular weight flavanones in higher concentrations. Already the content of condensed tannins, can be justified by the fact that they are phenolic compounds soluble in water and polar organic solvents [17].…”