Critical green routing synthesis of silver NPs using jasmine flower extract for biological activities and photocatalytical degradation of methylene blue

2020 ◽  
pp. 104877 ◽  
Author(s):  
M. Aravind ◽  
Awais Ahmad ◽  
Ikram Ahmad ◽  
M. Amalanathan ◽  
Khalida Naseem ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Biological Activities ◽  
Flower Extract ◽  
Green Routing ◽  
Silver Nps

Shape‐controlled silver NPs for shape‐dependent biological activities

2017 ◽  
Vol 12 (9) ◽  
pp. 647-651 ◽  
Author(s):  
Fatemeh Sadeghi ◽  
Abolfazl Yazdanpanah ◽  
Amirbabak Abrishamkar ◽  
Fatholah Moztarzadeh ◽  
Arash Ramedani ◽  
...  
Keyword(s):  
Biological Activities ◽  
Silver Nps ◽  
Shape Controlled

scholarly journals Enhanced photocatalytic and biological observations of green synthesized AC, AC/Ag and AC/Ag/TiO2 nanocomposites

2021 ◽  
Author(s):  
M AMALANATHAN ◽  
C. Parvathiraja ◽  
Asma A. Alothman ◽  
Saikh M. Wabaidur ◽  
Mohammad Ataul Islam
Keyword(s):  
Methylene Blue ◽  
Antibacterial Activity ◽  
Activated Carbon ◽  
Electron Microscope ◽  
Active Sites ◽  
Waste Water Treatment ◽  
Degradation Efficiency ◽  
Morphological Properties ◽  
X Ray ◽  
Flower Extract

Abstract In this study, AC/Ag/TiO2 nanocomposite was successfully synthesized by hydrothermal method using jasmine flower extract. The reactions of reduction, stabilization and capping was executed from the biomolecules of jasmine flower extract. The decoration of activated carbon and noble metal to the metal oxide enhanced the properties in all ways. As the modified structural, optical and morphological properties of as prepared nanocomposite was characterized using various techniques such as, X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), UV-Visible spectroscopy, Scanning electron microscope (SEM) with Energy dispersive X-ray spectroscopy (EDX), and Transmission electron microscope (TEM). The photocatalytic activities under sunlight were evaluated by the degradation of methylene blue (MB). Antibacterial activity was tested against E-coli and S. aureus. The characterization results show that AC/Ag/TiO2 nanocomposite is crystalline, needle like morphology and highly optically active catalyst. The investigated AC/Ag/TiO2 nanocomposite shows 96% maximum degradation efficiency at the end of 120 minutes undervisible light irradiation. The degradation efficiency and antibacterial activity is readily higher than that of commercial TiO2. The plasmonic support to the activated carbon and titanium nanoparticles creates large surface area, active sites and accelerated the free radical generation. These characteristics demonstrated that the prepared AC/Ag/TiO2 nanocomposite material is highly suitable for the decomposition of methylene blue and waste water treatment.

Green synthesis of Silver oxide nanoparticles using Zephyranthes Rosea flower extract and evaluation of biological activities

2020 ◽  
Vol 8 (5) ◽  
pp. 104137 ◽  
Author(s):  
G. Maheshwaran ◽  
A. Nivedhitha Bharathi ◽  
M. Malai Selvi ◽  
M. Krishna Kumar ◽  
R. Mohan Kumar ◽  
...  
Keyword(s):  
Green Synthesis ◽  
Silver Oxide ◽  
Biological Activities ◽  
Oxide Nanoparticles ◽  
Flower Extract ◽  
Silver Oxide Nanoparticles

scholarly journals Biogenic Silver Nanoparticles Decorated with Methylene Blue Potentiated the Photodynamic Inactivation of Pseudomonas aeruginosa and Staphylococcus aureus

Pharmaceutics ◽  
2020 ◽  
Vol 12 (8) ◽  
pp. 709 ◽  
Author(s):  
Paramanantham Parasuraman ◽  
Thamanna R. Y ◽  
Chitra Shaji ◽  
Alok Sharan ◽  
Ali H. Bahkali ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Methylene Blue ◽  
Pseudomonas Aeruginosa ◽  
Antimicrobial Properties ◽  
Resistant Bacteria ◽  
Planktonic Cells ◽  
Therapeutic Modalities ◽  
Coated Materials ◽  
Silver Nps ◽  
Novel Strategy

The persistence of multidrug resistance among microorganisms has directed a mandate towards a hunt for the development of alternative therapeutic modalities. In this context, antimicrobial photodynamic therapy (aPDT) is sprouted as a novel strategy to mitigate biofilms and planktonic cells of pathogens. Nanoparticles (NPs) are reported with unique intrinsic and antimicrobial properties. Therefore, silver NPs (AgNPs) were investigated in this study to determine their ability to potentiate the aPDT of photosensitizer against Staphylococcus aureus and Pseudomonas aeruginosa. Biologically synthesized AgNPs were surface coated with methylene blue (MB) and studied for their aPDT against planktonic cells and biofilms of bacteria. The nano-conjugates (MB-AgNPs) were characterized for their size, shape and coated materials. MB-AgNPs showed significant phototoxicity against both forms of test bacteria and no toxicity was observed in the dark. Moreover, activity of MB-AgNPs was comparatively higher than that of the free MB, which concludes that MB-AgNPs could be an excellent alternative to combat antibiotic resistant bacteria.

scholarly journals Comparison of Natural Dyes from Telang Flower Extracts (Clitoria ternatea L) as a Substitute for Methylen Blue in Diff Quik Painting

2021 ◽  
Vol 1 (2) ◽  
Author(s):  
Elsa Nurita Azka ◽  
Andita Ayu Mandasari ◽  
Setyo Dwi Santoso
Keyword(s):  
Methylene Blue ◽  
Epithelial Cells ◽  
Cell Nucleus ◽  
Immersion Time ◽  
Distilled Water ◽  
Blue Color ◽  
Clitoria Ternatea ◽  
Flower Extract ◽  
Methylen Blue ◽  
Better Than

Telang flower (Clitorea ternatea L) is a type of vine that grows wild in rice fields and has been widely used as food coloring. Telang flowers contain several active compounds, which is anthocyanin gives a blue color. This research was conducted with the aim of knowing the telang flower extract as a natural dye to substitute methylenen blue in diff quik painting. The analysis samples used were oral mucosal ephithelial cells which were taken by scraping the oral mucosa using cytobrush. Dried and mashed telang flower was then dissolved with distilled water (1:5) to make an extracts before the trial process of the samples. The results showed that the epithelial cells stained with methylene blue were better than telang flower extract. The immersion time of 15 minutes gave different colors to the cell nucleus and cytoplasm compared to 2 minutes and 5 minutes of immersion.

scholarly journals Phytochemical screening and evaluation of the antioxidant and anti-bacterial activity of Woundwort (Anthyllis vulneraria L.)

2021 ◽  
Vol 44 (3) ◽  
pp. 549-559
Author(s):  
Manel Ouerfelli ◽  
Nesrine Majdoub ◽  
Jihen Aroussi ◽  
María Pilar Almajano ◽  
Leila Bettaieb Ben Kaâb
Keyword(s):  
Mineral Content ◽  
Biological Activities ◽  
Condensed Tannin ◽  
Total Polyphenols ◽  
Flower Extract ◽  
Structure Activity ◽  
Anthyllis Vulneraria ◽  
Biochemical Characterisation ◽  
Activity Models ◽  
The One

AbstractFor millennia, medicinal plants have been used to prevent and cure diseases. Up to now there is a growing interest in their use in several areas as conducted for Anthyllis in our investigation. Actually the present research aims to investigate the biochemical characterisation of a medicinal plant collected from Tunisia named Woundwort [Anthyllis vulneraria L. (Jones and Turrill 1933)] by determining the mineral content, phenolic compound contents and biological activities of its leaf and flower extracts. On the one hand, the results obtained showed that A. vulneraria accumulated minerals at different amounts with significant differences between leaves and flowers extracts. On the other hand, the data revealed that the hydroethanolic flower extract contained the highest content of total polyphenols, flavonoids and condensed tannin, as it exhibited the strongest antioxidant activity. The flower extract also showed better antibacterial effect than leaf extract. These results support the exploitation of active compounds extracted from the leaves and especially the flowers of A. vulneraria, which can provide new alternatives to the use of certain drugs, additives, among others, as they can be used as structure–activity models for the development of new products.

A SEM and Light Microscope Study of the Epidermal Leaf Structures of the Carnivorous Plant, Sarracenia purpurea, L.

1971 ◽  
Vol 29 ◽  
pp. 358-359
Author(s):  
B. J. Panessa ◽  
J. F. Gennaro
Keyword(s):  
Methylene Blue ◽  
Toluidine Blue ◽  
Outer Surface ◽  
Microscope Study ◽  
Light Microscope ◽  
Carnivorous Plant ◽  
Sarracenia Purpurea ◽  
Inner Surface

Tissue from the hood and sarcophagus regions were fixed in 6% glutaraldehyde in 1 M.cacodylate buffer and washed in buffer. Tissue for SEM was partially dried, attached to aluminium targets with silver conducting paint, carbon-gold coated(100-500Å), and examined in a Kent Cambridge Stereoscan S4. Tissue for the light microscope was post fixed in 1% aqueous OsO4, dehydrated in acetone (4°C), embedded in Epon 812 and sectioned at ½u on a Sorvall MT 2 ultramicrotome. Cross and longitudinal sections were cut and stained with PAS, 0.5% toluidine blue and 1% azure II-methylene blue. Measurements were made from both SEM and Light micrographs.The tissue had two structurally distinct surfaces, an outer surface with small (225-500 µ) pubescent hairs (12/mm2), numerous stoma (77/mm2), and nectar glands(8/mm2); and an inner surface with large (784-1000 µ)stiff hairs(4/mm2), fewer stoma (46/mm2) and larger, more complex glands(16/mm2), presumably of a digestive nature.

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