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Biosynthesis of semiconductor nanoparticles and their activity against oral pathogens

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Document pages: 10 pages

Abstract: Dental care is a basic phenomenon of human health. Oral pathogens can cause severe oral rupture, which may lead to serious human diseases such as blood circulation and coronary heart disease. In the current study, we demonstrated the synthesis of CDs and ZnS Nanoparticles and their antibacterial activity against oral pathogens. The synthesis process of cadmium sulfide (CDS) and zinc sulfide (ZnS) nanoparticles is fast, novel and environmentally friendly. The formation of cadmium sulfide (CDS) and zinc sulfide (ZnS) nanoparticles was confirmed by surface plasmon spectroscopy of UV-Vis spectrophotometer. The crystalline morphology of nanoparticles was determined by transmission electron microscopy (TEM) and X-ray diffraction (XRD). Average cadmi sizem sulphide (CdS) and zinc sulphide (ZnS) nanoparticles was in the range of 10 nm to 25 nm and 65 nm, respectively, and the observed morphology was spherical. The results indicated that the proteins, which contain amine groups, played a reducing and controlling responsibility during the formation of cadmium sulphide (CdS) and zinc sulphide (ZnS) nanoparticles in the colloidal solution. The antimicrobial activity was assessed against oral pathogens such as Streptococcus sp. Staphylococcus sp. Lactobacillus sp., and Candida albicans and these results confirmed that the sulphide nanoparticles are exhibiting good bactericidal activity.

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