Antioxidant and Antiplasmodial Activities of Bergenin and 11- O -Galloylbergenin Isolated from Mallotus philippensis

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Abstract

Two important biologically active compounds were isolated from Mallotus philippensis. The isolated compounds were characterized using spectroanalytical techniques and found to be bergenin (1) and 11-O-galloylbergenin (2). The in vitro antioxidant and antiplasmodial activities of the isolated compounds were determined. For the antioxidant potential, three standard analytical protocols, namely, DPPH radical scavenging activity (RSA), reducing power assay (RPA), and total antioxidant capacity (TAC) assay, were adopted. The results showed that compound 2 was found to be more potent antioxidant as compared to 1. Fascinatingly, compound 2 displayed better EC50 results as compared to α -tocopherol while being comparable with ascorbic acid. The antiplasmodial assay data showed that both the compound exhibited good activity against chloroquine sensitive strain of Plasmodium falciparum (D10) and IC50 values were found to be less than 8 M. The in silico molecular docking analyses were also performed for the determination of binding affinity of the isolated compounds using P. falciparum proteins PfLDH and Pfg27. The results showed that compound 2 has high docking score and binding affinity to both protein receptors as compared to compound 1. The demonstrated biological potentials declared that compound 2 could be the better natural antioxidant and antiplasmodial candidate.

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Khan, H., Amin, H., Ullah, A., Saba, S., Rafique, J., Khan, K., … Badshah, S. L. (2016). Antioxidant and Antiplasmodial Activities of Bergenin and 11- O -Galloylbergenin Isolated from Mallotus philippensis. Oxidative Medicine and Cellular Longevity, 2016. https://doi.org/10.1155/2016/1051925

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