Nanoparticles FUNCTIONAL AND HEALTH
O contágio por grande parte dos vírus e inclusive o Covid-19, se dá através de pequenas gotículas do nariz ou da boca que se espalham quando uma pessoa com a contaminação tosse ou a exala. Essas gotículas depositam-se em objetos e superfícies ao seu redor e outras pessoas contraem o Covid-19 ao entrar em contato com esses objetos e/ou superfícies logo que em sequência, tocarem em regiões de mucosa como olhos, nariz ou boca.
The recommendation of the WHO (World Health Organization) is that if you suspect that a surface is contaminated, wipe it with a disinfectant and avoid touching your eyes, mouth or nose. Afterwards, sanitize your hands with alcohol or wash them with soap and water.
And if this surface has the ability to eliminate the coronavirus?
WHO evaluated studies show that the coronavirus can persist on surfaces for several hours or even several days.
This can vary and depends on local conditions, climate and humidity. In the case of SARS-coronavirus VOC, studies indicate that the survival time of these microorganisms on surfaces as common Teflon, PVC, glass, ceramics, rubber and stainless steel can reach five daysFacilitating local infection between individuals and facilitating the spread of diseases.
Accordingly, incorporating the surface treatment additives which induce the death of microorganisms is highly desirable.
Currently, the literature shows examples of composite or additives which are incorporated in coatings and surfaces, which proved to promote death of microorganisms.
Examples can be cited nanoparticles (NP): silver (Ag-NPs) and zinc oxide (Zn-NP), both additives present in the portfolio of products TNS.
Already exist in the literature studies that point to a promising advance the use of silver nanoparticles (Ag-NPs) in multiple markets.
Muitas tentativas bem-sucedidas foram feitas no estudo do papel das Ag-NPs na inibição do crescimento de vírus, como por exemplo o vírus influenza, Herpes simplex tipo 1 e tipo 2 (HSV-1 e HSV-2), vírus tacaribe Coxsackievirus B3 (TCRV), vírus Vaccinia (VACV), vírus parainfluenza humano tipo 3 (HPIV-3), vírus da hepatite B (HBV) e vírus da varicela (MPV). No entanto, o mecanismo exato para a ação dessas nanopartículas é ainda pouco conhecido. Mas já é relatado na literatura que quanto menor o tamanho das Ag-NPs maior é a eficácia da inibição.
Ag-NPs stabilized with special chemicals, inhibit HSV-1 because they help prevent virus binding to host cells and thus viral entry into cells. Another reason is that the functionalized AGNPS mercaptoethanesulfonate have the ability to mimic heparan sulfate (primary cell receptor HSV) and therefore these AGNPS begin to compete with the virus for binding the cell.
Antimicrobial TNS in action
And how can we promote safer surfaces of contamination? The formation of films containing NPs needs some polymer (natural or otherwise) allowing adhesion of NPs to the substrate and prevent its easy leaching of the coating.
Based on scientific research, the TNS team joined in a task force to organize information and present this compiled with different options of incorporation of their nanoparticles and other additives.
Our team of experts is available in the email: [email protected] for samples, reports and information can be shared with society in general.