NDLI: Melatonin improves bioreductant capacity and silver nanoparticles synthesis using Catharanthus roseus leaves

Content Provider	Royal Society of Chemistry (RSC)
Author	Bindu, S. Brindha, P. Sriram, S. Balamurugan, P. Sheshadri, S. A. Princy, S. Adline Anupriya, R.
Copyright Year	2015
Abstract	Melatonin is a natural hormone found in a variety of living organisms, including plants, and possesses the potential to act as a growth promoter and stress alleviator. The present study aims in understanding the effect of melatonin in Catharanthus roseus (C. roseus; medicinal plant used in anticancer therapy) leaf extracts for enhanced silver nanoparticle synthesis. Our results indicated that the supplementation of 300 μM melatonin to C. roseus leaves improves silver nanoparticles (AgNPs) synthesis. The phytosynthesized AgNPs were characterized using UV-Vis spectroscopy, FE-TEM, Zetasizer, XRD, AAS and FTIR spectroscopy. Moreover, the AgNPs were found to be smaller in size (ranging from 10–25 nm) with potent antibacterial activity (MIC and MBC values against the most prevalent urinary tract pathogens, Escherichia coli and Staphylococcus aureus, being 15.6 ± 0.0 μg mL−1 and 31.25 ± 0.0 μg mL−1 respectively). Furthermore, LC-MS/MS analysis of the melatonin treated C. roseus leaf extracts indicated the presence of significant biomolecules; 6-acetyl morphine (used as an analgesic), rauwolscine and fisetin (anticancer compounds). Melatonin treatment of C. roseus leaves also enhanced its antioxidant potential and total chlorophyll content. Thus, melatonin serves as a potential agent to improve C. roseus growth and therapeutic potential.
Starting Page	47548
Ending Page	47554
Page Count	7
File Format	HTM / HTML PDF
ISSN	20462069
Volume Number	5
Issue Number	59
Journal	RSC Advances
DOI	10.1039/c5ra01848j
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Hormone Spectroscopy Fisetin Chlorophyll Melatonin Escherichia coli Morphine Catharanthus roseus Herbalism Rauwolscine Antioxidant MBC Silver nanoparticle X-ray crystallography Ultraviolet\u2013visible spectroscopy Analgesic Aureus Munhwa Broadcasting Corporation Zetasizer
Content Type	Text
Resource Type	Article
Subject	Chemistry Chemical Engineering

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