Perfil Cromatográfico e Atividade Antioxidante Frente aos Radicais Peroxila (roo•), Superóxido (o2•-) e DPPH da folha, flor, ramo e inflorescência da Plectranthus Barbatus
DOI:
https://doi.org/10.5902/2179460X22130Abstract
Este trabalho teve como objetivo avaliar a atividade antioxidante (ROO·, O2·- e DPPH) e o perfil cromatográfico de compostos fenólicos da folha, flor, ramo e inflorescência da Plectranthus barbatus. Os extratos etanólicos das diferentes partes da planta obtidos através de extração por ultrassom foram caracterizados por cromatografia líquida acoplada a um detector UV-HPLC-UV. Além disso, avaliou-se a atividade antioxidante frente aos radicais DPPH, superóxido e peroxil. Como resultado, a maioria dos extratos apresentaram atividade antioxidante frente aos radicais investigados, além de que foram identificados os compostos quercetina, quercetrina, flavona, ácido cafeico e canferol nas partes investigadas da planta. Por fim, o estudo demonstrou que é de extrema importância se saber qual parte da planta está sendo avaliada, visto que estas apresentam diferenças na atividade antioxidante e na composição química.
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