Abstract
The wide distribution of infections-related pathogenic microbes is almost related to the contamination of food and/or drinking water. The current applied treatments face some limitations. In the current study, k-carrageenan polymer was used as supporting material for the proper/unreleased silver nanoparticles that showed strong antimicrobial activity against six pathogenic bacteria and yeast. The bio-extract of the pupa of green bottle fly was used as the main agent for the synthesis of silver nanoparticles. The qualitative investigation of biologically synthesized silver nanoparticles was determined using UV-Vis spectrophotometric analysis; however, the size of nanoparticles was in range of 30–100 nm, as confirmed by scanning electron microscopy (SEM), transmission electron microscopy (TEM), and particle size analyzer. The proper integration of silver nanoparticles into the polymeric substrate was also characterized through fourier transform infrared (FT-IR), thermogravimetric analysis (TGA), SEM, and tensile strength. The antimicrobial activity of k-carrageenan/silver nanoparticles against Gram positive, Gram negative, and yeast pathogens was highly effective. These results indicate the probable exploitation of the polymeric/nanoparticles composite as an extra stage in water purification systems in homes or even at water treatment plants.
Highlights
1.1.IntroductionManytechnological technologicalfields fieldshave haveincorporated incorporatedmetal metalnanoparticles nanoparticlesinintheir theirapplications, applications,such suchasasMany microelectronics[1],[1], sensor applications [2,3], magnetic devices [4], dye [5], and microelectronics sensor applications [2,3], magnetic devices [4], dye removal [5], removal and antimicrobial antimicrobial activities [6]
UV-Vis spectroscopy quick, and sensitive technique for for investigating the the formation of silver nanoparticles, which could be observed through the change in formation of silver nanoparticles, which could be observed through the change in color color from from light light yellow dark[26,27]
No antimicrobial activity was detected for k-carrageenan or k-carrageenan/pupa extract film; k-carrageenan integrated silver nanoparticles’ film showed a noticeable potent antimicrobial behavior against all tested bacterial and yeast strains. These results indicate that the observed antimicrobial activity is exclusive for silver nanoparticles and plain k-carrageenan or pupa extract are almost inactive, which is matched with other published data in the literature [41]
Summary
1.1.IntroductionManytechnological technologicalfields fieldshave haveincorporated incorporatedmetal metalnanoparticles nanoparticlesinintheir theirapplications, applications,such suchasasMany microelectronics[1],[1], sensor applications [2,3], magnetic devices [4], dye [5], and microelectronics sensor applications [2,3], magnetic devices [4], dye removal [5], removal and antimicrobial antimicrobial activities [6]. Silver nanoparticles are one of thearemost nanoparticles that have that have unique properties of beingand optically and catalytically active,elevated showingthermal elevated thermal and unique properties of being optically catalytically active, showing and electrical electrical conductivities. These properties are dependent strongly dependent on the morphology of the formed conductivities. Recent approaches medical approaches used silver nanoparticles as antibacterial and nanoparticles [7,8]. Recent used silver nanoparticles as antibacterial and antifungal antifungal agentsofastheir a result of their higher antimicrobial activities
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