Evaluation of Phytochemical, Antimicrobial, Antioxidant Activity and Cytotoxic Potentials of Agave americana
Ethnomedicinal plants are being used as a source of medicine from ancient time but they lack the proof of modern scientific evidence for their effectiveness. This study focuses on the evaluation of phytochemical, antimicrobial, antioxidant properties of one of the ethnomedicinal plant Agave americana from Dhulikhel region of Nepal. The plant extract was prepared using solvent-based warm soxhlet extraction from the leaves of the plant and antimicrobial activity against six different non-resistant clinical isolates of bacteria (Staphylococcus aureus, Shigella, Klebsiella pneumoniae, Escherichia coli, Bacillus thuringiensis, and Salmonella paratyphi) was evaluated using agar disc diffusion method along with qualitative analysis for presence/absence of phytochemicals. Antioxidant activity was measured by DPPH assay and the cytotoxicity was evaluated using MCF-7 (human breast adenocarcinoma) cancer cell. Presence of phytochemicals like alkaloids, flavonoids, reducing sugars and saponins were detected in the plant extract. The extract was found to show some level of antimicrobial activity against Staphylococcus aureus, Escherichia coli and Bacillus thuringiensis at 50, 100 and 200 mg/ml. The IC50 value of the extract was found to be 7.68 μg/ml. The extracts of Agave americana showed 50 % cell-death of MCF-7 in 12 h at 5 μg/ml. Although this study provided some scientific evidence for the medicinal value of Agave americana, further studies are still needed for the detailed evaluations of every molecule present in this plant along with screening in larger geographical area of Nepal.
Copyright (c) 2019 Nepal Journal of Biotechnology
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
The manuscript submitted to NJB must be an original contribution, not previously published and should not be under consideration for publication elsewhere. When the manuscript is accepted for publication, the authors agree to automatically transfer the copyright of the article to the publisher. It should grant permission to any third party, in advance and in perpetuity, the right to use, reproduce or disseminate your article, according to the NJB copyright and license agreement.
Authors transfer copyright to the publisher as part of a journal publishing agreement but have the rights to: Share their article for Personal Use, Internal Institutional Use and Scholarly Sharing purposes, with the NJB applies the Creative Commons Attribution-NonCommercial CC BY-NC license to all the works we publish after Jun 2020 (Before it was CC BY-NC-ND). Under this license, authors agree to make articles legally available for reuse, without permission or fees, for virtually any non-commercial purpose. Anyone may remix, adapt, and build upon your work non-commercially, and although their new works must also acknowledge you and be non-commercial, they don’t have to license their derivative works on the same terms. More details on CC BY-NC refer to its Licence Deed and Legal Code.