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Silver nanoparticle biogenically synthesised by Psychotria malayana Jack: physicochemical, cytotoxic and antimicrobial characterisations

Mohd Zulkafly, Nur Afifah and Darnis, Deny Susanti and Tengku Mohd. Kamil, Tengku Karmila and Bakhtiar, M. Taher (2023) Silver nanoparticle biogenically synthesised by Psychotria malayana Jack: physicochemical, cytotoxic and antimicrobial characterisations. Journal of Pharmacy, 3 (2). pp. 140-153. E-ISSN 2773-5664

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Introduction: Silver nanoparticles are targeted for antimicrobial and cytotoxic properties to combat antimicrobial resistance and chemoresistance. Green synthesis of silver nanoparticle method is widely used because it is environmental-friendly using biological substances as reducing and stabilising agents. Psychotria malayana Jack is rich with a wide range of phytochemicals that able to synthesise silver nanoparticle. Methods: The leaves of P. malayana Jack was extracted with ethanol-water solvent via ultrasound assisted extraction and the extract was analysed using liquid chromatography- mass spectrometry (LC-MS). The extract was then added to silver nitrate solution for 24 hours. The formation of AgNPs-PM was analysed using UV-visible spectrophotometry, scanning electron microscopy, zeta particle size and zeta potential analysis. The synthesised AgNPs-PM were tested for their cytotoxicity on human colorectal adenocarcinoma cells (Caco-2) and human epithelial breast adenocarcinoma cells (MCF-7) using 3-[4,5-dimethylthiazol-2-yl]-2,5- diphenyltetrazolium bromide (MTT) colourimetric assay. For antibacterial activity, the nanoparticles were tested on Gram-negative Escherichia coli and Pseudomonas aeruginosa and Gram-positive Bacillus subtilis and Staphylococcus aureus using disc diffusion method. Results: AgNPs-PM were successfully synthesised using P. malayana Jack extract. LC-MS analysis showed the presence of flavonoids, amino acids and heterocyclic compounds . An attempt in cytotoxic activity test showed that at concentrations between 12.5 μg/ml to 400 μg/ml of AgNPs-PM, no cytotoxic activity was observed. Whereas, in antibacterial assay, 2 mg/ml AgNPs-PM tested on the bacterial strains showed weak inhibition on their growth. Conclusion: AgNPs-PM has been successfully synthesised and characterised. However, the AgNPs-PM possess low bioactivities of cytotoxic and antibacterial activities.

Item Type: Article (Journal)
Uncontrolled Keywords: Silver nanoparticles, P. malayana Jack, flavonoids, cytotoxic, antimicrobia
Subjects: R Medicine > RM Therapeutics. Pharmacology
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): Kulliyyah of Pharmacy
Kulliyyah of Pharmacy > Department of Pharmaceutical Technology
Kulliyyah of Pharmacy > Department of Pharmacy Practice
Kulliyyah of Science
Kulliyyah of Science > Department of Chemistry
Depositing User: Dr Muhammad Taher
Date Deposited: 08 Aug 2023 11:02
Last Modified: 08 Aug 2023 11:06
URI: http://irep.iium.edu.my/id/eprint/105887

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