Examinando por Autor "Moy Diaz, Brenda"

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Actividad antibacteriana frente a Cutibacterium acnes y antioxidante de los extractos hidroalcohólicos de las hojas, flores, tallo y raíz de Hypericum silenoides Juss "canchalagua"
(Universidad Privada Norbert Wiener, 2020-12-10) Moy Diaz, Brenda; Ortiz Arévalo, Yesenia Edith; Félix Véliz, Luis Miguel Visitación
The species Hypericum silenoides Juss "Canchalagua," native to the Cajamarca department, is a plant with various medicinal applications. The Objective of this research was to determine the antibacterial activity against Cutibacterium acnes and the antioxidant activity of the hydroalcoholic extracts from the leaves, flowers, stem, and root of Hypericum silenoides Juss, 'Canchalagua.' The Method employed consisted of preparing the hydroalcoholic extracts of the leaves, flowers, stem, and root of Hypericum silenoides Juss, followed by a solubility test and qualitative analysis to identify the metabolites. To determine the antibacterial activity against Cutibacterium acnes (ATCC 6919), the disk diffusion method was performed. For antioxidant activity, the 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical method was used for evaluation. Results: The microbiological assay showed that the positive control group presented a larger diameter of the inhibition halo compared to the plant species extracts studied. The hydroalcoholic extract of the flowers showed greater antibacterial activity compared to the extracts of the leaves, stem, and root. The hydroalcoholic extract of the leaves of Hypericum silenoides Juss, 'Canchalagua,' presented the highest antioxidant activity with an IC50 of 54.53 µg/mL, followed by the hydroalcoholic extract of the flowers with an IC50 of 57.05 µg/mL, compared to the control (Trolox) with a p < 0.05. Conclusion: The hydroalcoholic extracts of the leaves, flowers, stem, and root have antibacterial activity against Cutibacterium acnes and antioxidant activity.