Determinación de la actividad antioxidante del extracto etanólico de las partes aéreas de Lupinus Mutabilis Sweet “Tarwi”
Fecha
2025
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Universidad Nacional San Luis Gonzaga
Resumen
RESUMEN
El presente trabajo tuvo como objetivo primordial evaluar la actividad antioxidante del extracto
etanólico de las partes aéreas de Lupinus Mutabilis Sweet “Tarwi”. La muestra fue recolectada en el
distrito de Santiago de Chocorvos, provincia de Huaytará, en el departamento de Huancavelica. Se
obtuvo el extracto etanólico por maceración de las partes aéreas, utilizando etanol de 96º como
solvente de extracción. Para determinar los metabolitos secundarios se realizó un tamizaje
fitoquímico y la identificación se efectuó por reacciones de coloración y/o precipitación. Los métodos
empleados para la determinación de la actividad antioxidante fueron: DPPH, FRAP y ABTS. Se
determinó la presencia de compuestos bioactivos de naturaleza alcaloide, flavonoide, triterpenoide y/
o esteroide, antraquinonas, catequinas, saponinas y aminoácidos libres; en cuanto a los resultados de
la actividad antioxidante se encontró que en el método del radical DPPH se obtuvo un IC50
equivalente a 5,08 mg/mL de extracto; por el método FRAP se obtuvo 1 mM de trolox es equivalente
a 0.750 mg/mL; en el método de radical libre ABTS se halló 1 mM de trolox es equivalente a 0.203
mg/mL de extracto. Concluyendo que el extracto etanólico de las partes aéreas de Lupinus Mutabilis
Sweet “Tarwi” presenta actividad antioxidante por los métodos estudiados.
The main objective of the present work was to evaluate the antioxidant activity of the ethanolic extract of the aerial parts of Lupinus Mutabilis Sweet “Tarwi”. The sample was collected in the district of Santiago de Chocorvos, province of Huaytará, in the department of Huancavelica. The ethanolic extract was obtained by maceration of the aerial parts, using 96º ethanol as extraction solvent. To determine the secondary metabolites, a phytochemical screening was carried out and the identification was made by staining and/or precipitation reactions. The methods used for the determination of antioxidant activity were: DPPH, FRAP and ABTS. The presence of bioactive compounds of alkaloid, flavonoid, triterpenoid and/or steroid nature, anthraquinones, catechins, saponins and free amino acids was determined; as for the results of the antioxidant activity it was found that in the DPPH radical method an IC50 equivalent to 5.08 mg/mL of extract was obtained; by the FRAP method 1 mM of trolox was obtained is equivalent to 0. 750 mg/mL; in the ABTS free radical method 1 mM of trolox was found is equivalent to 0.203 mg/mL of extract. Concluding that the ethanolic extract of the aerial parts of Lupinus Mutabilis Sweet “Tarwi” presents antioxidant activity by the studied methods.
The main objective of the present work was to evaluate the antioxidant activity of the ethanolic extract of the aerial parts of Lupinus Mutabilis Sweet “Tarwi”. The sample was collected in the district of Santiago de Chocorvos, province of Huaytará, in the department of Huancavelica. The ethanolic extract was obtained by maceration of the aerial parts, using 96º ethanol as extraction solvent. To determine the secondary metabolites, a phytochemical screening was carried out and the identification was made by staining and/or precipitation reactions. The methods used for the determination of antioxidant activity were: DPPH, FRAP and ABTS. The presence of bioactive compounds of alkaloid, flavonoid, triterpenoid and/or steroid nature, anthraquinones, catechins, saponins and free amino acids was determined; as for the results of the antioxidant activity it was found that in the DPPH radical method an IC50 equivalent to 5.08 mg/mL of extract was obtained; by the FRAP method 1 mM of trolox was obtained is equivalent to 0. 750 mg/mL; in the ABTS free radical method 1 mM of trolox was found is equivalent to 0.203 mg/mL of extract. Concluding that the ethanolic extract of the aerial parts of Lupinus Mutabilis Sweet “Tarwi” presents antioxidant activity by the studied methods.
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Palabras clave
Lupinus Mutabilis Sweet, Antioxidant activity, Dpph, Frap, Abts, Lupinus Mutabilis