Publications by authors named "S Butot"
Broad-Spectrum Supramolecularly Reloadable Antimicrobial Coatings.
ACS Appl Mater Interfaces
June 2024
Article Synopsis
- Antimicrobial surfaces help prevent infectious diseases, but current coatings have limitations like short lifespan, ineffectiveness against organic material, and high costs.
- The new paint developed uses waterborne latex particles combined with quaternary ammonium compounds (QACs), providing a cost-effective solution with long-lasting antimicrobial properties.
- This paint remains effective for over 90 washes, can be easily restored with a simple spray, and has shown effectiveness against multiple bacteria and viruses, making it suitable for healthcare and food production.
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection is mainly transmitted via droplets and aerosols. To evaluate the role of transmission by fomites, SARS-CoV-2-specific data on transfer rates from surfaces to hands and from hands to face are lacking. Here, we generated quantitatively controlled transfer rates for SARS-CoV-2 from food items (lettuce, ham, and vegetarian meat alternative [VMA]) and packaging materials (cardboard and plastic) to gloves using a wet, dry, and frozen viral inoculum and from glove to glove using a wet viral inoculum.
View Article and Find Full Text PDFAssessment of Antiviral Coatings for High-Touch Surfaces by Using Human Coronaviruses HCoV-229E and SARS-CoV-2.
Appl Environ Microbiol
September 2021
A novel and robust approach to evaluate the antiviral activity of coatings was developed, assessing three commercially available leave-on surface coating products for efficacy against human coronaviruses (HCoVs) HCoV-229E and severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). The assessment is based on three criteria that reflect real-life settings, namely, (i) immediate antiviral effect, (ii) effect after repeated cleaning of the coated surface, and (iii) antiviral activity in the presence of organic material. The results showed that only a copper compound-based coating successfully met all three criteria.
View Article and Find Full Text PDFArticle Synopsis
- The study aimed to explore high-energy electron beam (HEEB) treatments to identify surrogate microorganisms for enteric viruses and to evaluate low-energy electron beam (LEEB) treatments for inactivating these viruses in frozen blueberries.
- Among various microorganisms tested, Geobacillus stearothermophilus spores demonstrated the highest inactivation across most food matrices, with HAV exhibiting significant reduction levels at higher doses, especially on raisins.
- The research concluded that using G. stearothermophilus and bacteriophage MS2 as surrogates could provide reliable estimates for the inactivation of HAV during LEEB treatment at a specific energy level and dose.
Article Synopsis
- The study investigates the microbiological safety of osmotic dehydration in blueberries, focusing on optimal temperature treatments to eliminate pathogens that can survive in minimally processed fruits.
- Four harmful pathogens were tested, with results showing that osmotic dehydration at 40 °C effectively killed most bacteria, while viruses required 45 °C for successful inactivation.
- A combined treatment of osmotic dehydration at 23 °C followed by air-drying at 100 °C resulted in significant reductions of all tested bacteria and viruses, enhancing the safety of dehydrated berries used in various food products.