Sunlight mediated synthesis of silver nanoparticles by a novel actinobacterium (Sinomonas mesophila MPKL 26) and its antimicrobial activity against multi drug resistant Staphylococcus aureus
“…The sunlight acted as a catalyst, due to photo-excitation, which creates hot electron-hole pairs that are produced by excited molecules. The hot electron-hole pairs were then transferred to surface-adsorbed reducing agent excess electrons, free radicals (such as ) and reduced silverions, which resulted in neutralized silver atoms (Ulug et al, 2015; Manikprabhu et al, 2016). …”
Diseases caused by Staphylococcus warneri have a significant impact on human health. We evaluated the antibacterial activity of silver nanoparticles (synthesized using the endophytic strain SYSU 333150) against S. warneri. The strain SYSU 333150 was isolated from the roots of Borszczowia aralocaspica Bunge. The 16S rRNA sequence results suggest that SYSU 333150 belongs to the genus Isoptericola and is likely a new species. Photo-irradiation was used to synthesize silver nanoparticles, which were characterized using UV-visible spectroscopy, transmission electron microscopy and X-ray diffraction. The nanoparticles were spherical and measured to be11 to 40 nm. X-ray diffraction revealed four peaks corresponding to the 111, 200, 220, and 311 planes of the face-centered cubic lattice, indicating a crystalline nature. Fourier transform infrared spectroscopy suggested that the metabolites in the culture supernatant were likely reducing and capping agents. The silver nanoparticles possessed antimicrobial activity (14 mm zone of inhibition) against S. warneri, which was likely a result of DNA cleavage. The synthesized silver nanoparticles have potent antibacterial activity against S. warneri and can be used to control infection.
“…The sunlight acted as a catalyst, due to photo-excitation, which creates hot electron-hole pairs that are produced by excited molecules. The hot electron-hole pairs were then transferred to surface-adsorbed reducing agent excess electrons, free radicals (such as ) and reduced silverions, which resulted in neutralized silver atoms (Ulug et al, 2015; Manikprabhu et al, 2016). …”
Diseases caused by Staphylococcus warneri have a significant impact on human health. We evaluated the antibacterial activity of silver nanoparticles (synthesized using the endophytic strain SYSU 333150) against S. warneri. The strain SYSU 333150 was isolated from the roots of Borszczowia aralocaspica Bunge. The 16S rRNA sequence results suggest that SYSU 333150 belongs to the genus Isoptericola and is likely a new species. Photo-irradiation was used to synthesize silver nanoparticles, which were characterized using UV-visible spectroscopy, transmission electron microscopy and X-ray diffraction. The nanoparticles were spherical and measured to be11 to 40 nm. X-ray diffraction revealed four peaks corresponding to the 111, 200, 220, and 311 planes of the face-centered cubic lattice, indicating a crystalline nature. Fourier transform infrared spectroscopy suggested that the metabolites in the culture supernatant were likely reducing and capping agents. The silver nanoparticles possessed antimicrobial activity (14 mm zone of inhibition) against S. warneri, which was likely a result of DNA cleavage. The synthesized silver nanoparticles have potent antibacterial activity against S. warneri and can be used to control infection.
“…Use of LED lamps as a light source has several advantages, such as localized surface plasmon resonance (SPR) enhancement [10][11][12], control of morphology and optical properties [13], improved membrane performance [14], high photon efficiency, creation of low-voltage electricity, power stability, accuracy, and low cost [15]. Given recent advances in the application of LEDs in photocatalytic reactions, we have studied the synthesis of AgNPs using blue LED light [11].…”
“…Members of the genus Sinomonas have the ability to produce silver nanoparticles (3), can hydrolyze starch (4), and are used for biodesulfurization coal (5). Here, we report the draft genome sequence of strain MPKL 26, the type strain of the novel species Sinomonas mesophila , which has the ability to produce silver nanoparticles (3). …”
Sinomonas mesophila MPKL 26T can produce silver nanoparticles. Here, we present the 4.0-Mb genome of this type strain, which contains 47 scaffolds with an N50 scaffold length of 261,266 bp. The availability of the genome sequence will provide a better understanding of strain MPKL 26T and the genus Sinomonas.
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