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Sci Rep

Title:		"Green synthesis of magnesium nanoparticles mediated from Rosa floribunda charisma extract and its antioxidant, antiaging and antibiofilm activities"
Author(s):		Younis IY; El-Hawary SS; Eldahshan OA; Abdel-Aziz MM; Ali ZY;
Address:		"Department of Pharmacognosy, Faculty of Pharmacy, Cairo University, El Kaser El-Aini, Cairo, 11562, Egypt. inas.younis@pharma.cu.edu.eg. Department of Pharmacognosy, Faculty of Pharmacy, Cairo University, El Kaser El-Aini, Cairo, 11562, Egypt. Pharmacognosy Department, Faculty of Pharmacy, Ain Shams University, Cairo, Egypt. Medical Microbiology, The Regional Center for Mycology and Biotechnology (RCMB), Al-Azhar University, Cairo, Egypt. Department of Biochemistry, Egyptian Drug Authority (EDA), Giza, 12553, Egypt"
Journal Title:		Sci Rep
Year:		2021
Volume:		20210819
Issue:		1
Page Number:		16868 -
DOI:		10.1038/s41598-021-96377-6
ISSN/ISBN:		2045-2322 (Electronic) 2045-2322 (Linking)
Abstract:		"Flower based nanoparticles has gained a special attention as a new sustainable eco-friendly avenue. Rosa floribunda charisma belongs to modern roses with bright yellow, red flowers with marvellous rose scent. Different methods were used for the extraction of its floral scent such as hexane, microwave, and solid-phase micro-extraction. The latter was the most efficient method for the extraction of phenyl ethyl alcohol, the unique scent of roses. In the current study, magnesium nanoparticles (RcNps) have been synthesized using Rosa floribunda charisma petals that have privileges beyond chemical and physical routs. RcNps formation was confirmed using UV-Visible (UV-Vis) Spectroscopy, Fourier Transform Infrared Spectroscopy (FTIR), High Resolution-Transmission Electron Microscope (HR-TEM), Field Emission-Scanning Electron Microscope (FE-SEM), Energy dispersive X-ray (EDX), X-ray Diffractometer (XRD), and X-ray photoelectron spectroscopy (XPS). HR-TEM images detected the polyhedral shape of RcNps with a diverse size ranged within 35.25-55.14 nm. The resulting RcNps exhibited a high radical scavenging activity illustrated by inhibition of superoxide, nitric oxide, hydroxyl radical and xanthine oxidase by by IC(50) values 26.2, 52.9, 31.9 and 15.9 microg/ml respectively as compared to ascorbic acid. Furthermore, RcNps at concentration of 100 microg/ml significantly reduced xanthine oxidase activity (15.9 +/- 0.61 microg/ml) compared with ascorbic acid (12.80 +/- 0.32 microg/ml) with p < 0.05. Moreover, RcNps showed an excellent antiaging activity demonstrated by inhibition of collagenase, elastase, hyaluronidase and tyrosinase enzymes in a dose-dependent manner with IC(50) values of 58.7 +/- 1.66 microg/ml, 82.5 +/- 2.93 microg/ml, 191.4 +/- 5.68 microg/ml and 158.6 +/- 5.20 microg/ml as compared to EGCG respectively. RcNps also, exhibited a promising antibacterial activity against three skin pathogens delineate a significant threat to a public health, as Staphylococcus epidermidis, Streptococcus pyogenes, and Pseudomonas aeruginosa with MIC of 15.63, 7.81, 31.25 microg/ml as compared to ciprofloxacin (7.81, 3.9 and 15.63 microg/ml). Moreover, RcNps suppressed the formation of biofilms with minimum biofilm inhibitory concentrations 1.95, 1.95, 7.81 microg/ml against the fore mentioned strains, respectively. Overall, our findings indicate that Rosa floribunda nanoparticles could be used as a leading natural source in skin care cosmetic industry"
Keywords:		Aging/*drug effects Antioxidants/*pharmacology Biofilms/*drug effects *Green Chemistry Technology Magnesium/*chemistry Metal Nanoparticles/*chemistry/ultrastructure Microbial Sensitivity Tests Odorants Photoelectron Spectroscopy Plant Extracts/*chemistry;
Notes:		"MedlineYounis, Inas Y El-Hawary, Seham S Eldahshan, Omayma A Abdel-Aziz, Marwa M Ali, Zeinab Y eng England 2021/08/21 Sci Rep. 2021 Aug 19; 11(1):16868. doi: 10.1038/s41598-021-96377-6"