#silver nanoparticles

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This study examined how pollen germination and pollen tube growth in Catharanthus roseus (L.) G. Don was affected by biosynthesized silver nanoparticles (AgNPs). Pteris vittata L. frond extract was used to synthesize AgNPs, which were then characterized using UV-Vis spectroscopy, FTIR, EDS and SEM. There have been measurements of silver nanoparticles of different sizes (17 nm to 120 nm) with a mean size of 46 nm. Different concentrations of AgNP (0-100 μg/ml) were applied to pollen grains in a basic germination medium consisting of 5% sucrose solution added with boric acid and magnesium sulphate. The results revealed that addition of AgNPs had a substantial impact on pollen germination and pollen tube growth where basic germination media served as a control. Optimum concentration of 75μg/ml of AgNP was shown to be the most effective which improved percent pollen germination and pollen tube length. Microscopic analysis revealed changes in pollen tube morphology and cell wall integrity. The findings suggest that biosynthesized AgNPs can modulate pollen germination and tube growth in Catharanthus roseus, potentially impacting plant reproduction and fertility. Thus, impact of AgNP treated pollen grains might be breakthrough in the field of agriculture against pollen sterility as well as in hybridization experiments.

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Silver nanoparticles of Aloe vera gel as strong therapeutic candidates

The biological approach is the most preferred technique for preparation of nanoparticles being much easy, less time consuming, and more importantly eco-friendly. In the current study, green synthesis of silver nanoparticles (AgNPs) was carried out by using Aloe vera gel. Characterization of the biosynthesized AgNPs was conducted by UV-vis spectrophotometer which showed the absorbance peak at the 450 nm. The Scanning Electron Microscopic (SEM) analysis revealed further, the spherical shaped AgNPs with the average size of 40nm±4. Nonetheless, the elemental composition and phase centered cubic crystalline nature was confirmed by the Energy Dispersive X-ray (EDX) and X-ray Powder Diffraction (XRD) respectively. The involvement of the carboxyl group of lipids of Aloe vera essential oils in the reduction of Ag cations to AgNPs was confirmed by the Fourier-transform infrared spectroscopy (FTIR). Moreover, the bio-synthesized AgNPs when subjected to evaluation of bactericidal activity against both the Gram-positive (Bacillus subtilis, Micrococcus luteus) and Gram-negative bacterial strains (Escherichia coli, Enterobacter aerogenes and Agrobacterium tumefaciens), showed higher activity against the Gram-negative bacterial strains. Furthermore, the particles under the study were also found to have potential to inhibit the growth of tested fungal strains (Mucor species, Aspergillus niger, Aspergillus flavus, Aspergillus fumigatus and Fusarium solani) in a concentration-dependent manner. Cytotoxicity against HePG2 and MCF7 cells was also found significant with IC50 of 13.89 and 19.29 µM, respectively. Thus, it can be concluded that combination therapy of medicinal plants with metal nanoparticles might be one of the potential approaches to combat various diseases.

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History of Silver in Medicine – Silver Age Labs

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Silver in medicine: A brief history BC 335 to present

Silver is a naturally occurring element. Similar to other metals, the ionized form of silver (Ag+1) has known antimicrobial properties. A nu

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This study examined how pollen germination and pollen tube growth in Catharanthus roseus (L.) G. Don was affected by biosynthesized silver nanoparticles (AgNPs). Pteris vittata L. frond extract was used to synthesize AgNPs, which were then characterized using UV-Vis spectroscopy, FTIR, EDS and SEM. There have been measurements of silver nanoparticles of different sizes (17 nm to 120 nm) with a mean size of 46 nm. Different concentrations of AgNP (0-100 μg/ml) were applied to pollen grains in a basic germination medium consisting of 5% sucrose solution added with boric acid and magnesium sulphate. The results revealed that addition of AgNPs had a substantial impact on pollen germination and pollen tube growth where basic germination media served as a control. Optimum concentration of 75μg/ml of AgNP was shown to be the most effective which improved percent pollen germination and pollen tube length. Microscopic analysis revealed changes in pollen tube morphology and cell wall integrity. The findings suggest that biosynthesized AgNPs can modulate pollen germination and tube growth in Catharanthus roseus, potentially impacting plant reproduction and fertility. Thus, impact of AgNP treated pollen grains might be breakthrough in the field of agriculture against pollen sterility as well as in hybridization experiments.

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Influence of biosynthesized silver nanoparticles on pollen germination and tube growth in Catharanthus roseus (L.) G. Don

Abstract This study examined how pollen germination and pollen tube growth in Catharanthus roseus (L.) G. Don was affected by biosynthesized silver nanoparticles (AgNPs). Pteris vittata L. frond extract was used to synthesize AgNPs, which were then characterized using UV-Vis spectroscopy, FTIR, EDS and SEM. There have been measurements of silver nanoparticles of different sizes (17 nm to 120 nm)…

Influence of biosynthesized silver nanoparticles on pollen germination and tube growth in Catharanthus roseus (L.) G. Don

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The present work shows the determination of total phenolic compounds in plant leaves extract of Azadirachta indica, Conocarpus erectus and Nerium indicum and then Silver nanoparticles (Ag NPs) were prepared by using plant leaf extract as reductant and their application on leather. Ag NPs were characterized by SEM (Scanning Electron Microscope) and XRD (X-Ray Diffractometer) methods. The size of Ag NPs size was assessed in the limit of 30-80 nm. UV-Visible spectroscopy and SEM was used to confirm that Ag NPs were set down on the collagen fibers surface and inner side of the skin collagen matrix of fibers (leather). The antibacterial and antifungal effect of Ag NPs was assessed by general microbiological test for seven days. The result shown power full strength of silver Nano particles against bacterial or fungal attack for long duration of time. This permits us to deliberate the assimilation of these Nano particles into leather as a feasible substitute of other than commercially available expensive products in order to gain leather with enhanced antimicrobial properties.

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Due to their ability to fight off bacteria, viruses, and fungi, silver nanoparticles (AgNPs) are often utilized in biotechnology. They are created via the use of chemical, physical, and biological processes. AgNPs provide efficient remedies for seven primary problems, including antibacterial, antiviral, anticancer, bone healing, bone cement, dental applications, and wound healing, according to a bibliometric review of 10,278 papers from 2010 to 2020. Due to their intriguing characteristics and promise for personalized healthcare, silver nanoparticles (AgNPs) have attracted a lot of attention in the field of biomedical applications. These nanostructures have the potential to be used as antibacterial agents, drug delivery systems, detection platforms, biomaterials, tissue regeneration agents, and therapeutic alternatives with improved performance. For their development, it is essential to comprehend how their biological interactions and possible harmful consequences work. The inherent anti-inflammatory, antibacterial, antiviral, and antifungal properties of AgNPs are discussed in this paper.