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Phytochemical analysis and antioxidant potential of the crude extract of Allium oschaninii scape

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Abstract

The present study focuses on the antioxidant potential of aqueous and ethanolic extracts of the scape of Allium oschaninii. Phytochemical analysis and total phenolic content for both the extracts and Total flavonoid content for ethanolic extract were determined. Anti-microbial activity of different concentrations of both the extracts against Pseudomonas aeruginosa, Escherichia coli, Staphylococcus aureus, and Bacillus cereus was investigated. The total antioxidant power (TAP), 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) (ABTS), 2,2-diphenyl-1-picrylhydrazyl (DPPH) and Ferric reducing ability of plasma (FRAP) assays were carried out. IC50 values of aqueous and ethanolic extract to scavenge ABTS and DPPH free radical were determined as 0.2524, 0.5467 and 0.6155, 0.9591 (mg/mL) respectively. FRAP and TAP results of both aqueous and ethanolic extracts were determined to be 2530.972 and 1199.86 (µmol of Fe2+ per 1000 µg of extract) and 84.13 ± 5.51 and 141.88 ± 40.49 (equivalent mg of ferulic acid per 150 mg dried sample) respectively. These results signify the antioxidant power potential of the scape of A.oschaninii.

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Acknowledgements

Laboratory facilities for this project were provided by the Department of Biotechnology, Kamaraj College of Engineering and Technology. The study was not supported by any source of funding.

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Correspondence to Rengesh Balakrishnan.

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This manuscript described has not been published before; not under consideration for publication anywhere else; and has been approved by all co-authors.

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Alagarsamy, S., Chellappan, P., Jesuraj, M.T. et al. Phytochemical analysis and antioxidant potential of the crude extract of Allium oschaninii scape. Orient Pharm Exp Med 18, 309–316 (2018). https://doi.org/10.1007/s13596-018-0339-5

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