Actividad antioxidante en hojas de variedades de guanábana (annona muricata) como fuente antiestrés de sistema productivos bananeros

Abstract

Soursop (Annona muricata L.) contains a large number of compounds with antioxidant potential that are closely linked to phenolic compounds present in plant tissue. Soursop extract has more than 200 bioactive compounds that have been isolated from the leaf and pulp of the fruit, mostly belong to the groups of alkaloids, flavonoids, tannins, saponins, glycosides, and acetogenins. The present work proposes the analysis of aqueous extracts of leaves of five varieties, detailing sampling points such as the position of leaves in the crown and in the branch, as possible potential antioxidants. In the quantification of antioxidant biomolecules, the Folin-Ciocalteu method and DPPH were used as substances that promote color changes in contact with antioxidant biomolecules. The content of total soluble phenols allows to identify two varieties with values ​​that diverge between the samples, in variety 2 in all its lower section and crown, in part of the initial, middle and final branch expressed in mg EAG / gMS with values ​​of 7, 80, 6.64; 7.94 and at 7.19; 7.80; 8.20 respectively, variety 5 in the crown section, in the final branch of 6.72. The antioxidant activity identifies two varieties with values ​​that are derived within all the sample points, variety 4 in its lower section and starting the branch expressed in mg ET / gms with 179.45 and crown section at the beginning of the branch 213.77, and variety 5 in its cup section at the end of the branch with 173.55. The most significant point is in variety 5, in the crown section of the plant, the final part of the branch.