Colloidal Silver Nanoparticles for the Prevention of Gastrointestinal Bacterial Infections
In this clinical study, published in the journal Advances in Natural Sciences: Nanoscience and Technology, researchers found that colloidal silver nanoparticles were extremely effective against two key forms of gastrointestinal bacteria responsible for serious infections, i.e., Escherichia coli (ATCC 43888-O157:k-:H7) and Vibrio cholera (O1).
The research team demonstrated that the silver solution provided stronger and longer-lasting surface disinfection than conventional chemical disinfectants and surmised it could be effectively used in place of them. The researchers concluded, “In this work, we investigated the antibacterial and disinfectant activity of colloidal silver NPs which were prepared by a UV-enhanced photochemical method….It was found that our silver NPs colloid exhibited strongly effective antibacterial effect against tested gastrointestinal bacteria at a silver concentration as low as ~3 mg l-1. Interestingly, the silver NPs colloid displayed enhanced antimicrobial performance and longer lasting disinfectant effect as compared to the conventional chloramin B disinfection agent. With these exhibited advantages, the as-prepared colloidal silver NPs are very promising for use in treatment of environments containing gastrointestinal bacteria or other infectious pathogens.”