December 2014

Optimizing the extraction of phenolic compounds from Bixa orellana L. and effect of physicochemical conditions on its antioxidant activity

For this work, the surface response methodology was applied in order to optimize the extraction using solvents of phenolic compounds present in Bixa orellana L. seeds through a central composite design that evaluated the effect of the factors: extraction time (36 to 60 h) and the solvent ml/g seed ratio (2/1 to 4/1), for the response variable total phenol content extracted from the seed. The levels on the factors that...

Author(s): Cindy Tatiana Sepúlveda Rincón, José Edgar Zapata Montoya, and Gelmy Luz Ciro Gómez  

December 2014

Stem anatomy of cipó-caboclo (Davilla rugosa, Dillenianecae) in Rio de Janeiro, Brazil

In Brazilian folk medicine, stems of Davilla rugosa, locally known as cipó-caboclo, are known for their anti-inflammatory and antiulcer uses, as well as their use as a laxative, stimulant, aphrodisiac, and tonic. The plant is also important in religious rituals. Previous studies showed that the stem contains flavonoids and terpenes. The ethnomedicinal use of D. rugosa has been reported all over Brazil. Plants of...

Author(s): Neves, M. F.,  Marques, V. V. L., de Fraga, C. N., Vieira, R. C., & Tamaio, N.

December 2014

Antimicrobial act ivit y of essent ial oils obt ained from Stachytarpheta cayennensis, (Rich.) Vahl. (Verbenaceae) collect ed in the South-west region of Paraná - Brazil

Essential oils extracted from plants are currently being used in chemical syntheses or as new materials, with various medical, pharmaceutical, technological and business applications. In this context, this study was carried out to evaluate the antimicrobial activity of the essential oil obtained from the verbena - Stachytarpheta cayennensis, (Rich.) Vahl. - (Verbenaceae) - collected in the Southwest region of...

Author(s): Onofre, S. B., Kagimura, F. Y.,  & Mattiello, S. P.