Suchergebnisse

Extraction of antioxidant compounds present in the top leaves of sugarcane at different stages of plant development showed that the most favorable phase for the extraction is the final stage of maturation of the plant. Flavonoid contents (5.98±0.32mg/mL) and relative antioxidant activity (AArel=257.49±16.94%) similar to the initial stage of maturation were found. Active compounds were chromatographically fractionated over silica gel and elution with solvents of increasing polarity. The antioxidant activity towards -carotene, and the sequestering activity of DPPH (1,1-diphenyl-2-picrylhydrazyl) radicals was determined. The fractions which had the highest total antioxidant capacity (TAC) were obtained from the elution of the solvent mixture: chloroform and ethanol. The results indicate that the top leaves of sugarcane are a possible source of bioactive compounds.