Forming nanoparticles of α-amylase and embedding them into solid surfaces

Sonochemical fabrication of edible fragrant antimicrobial nano coating on textiles and polypropylene cups

We report on a simple and effective ultrasound-assisted deposition of vanillin nanoparticles (∼50nm in size), raspberry ketone (RK) nanoparticles (∼40nm in size) and camphor nanoparticles (width ∼30nm, length ∼40nm in size) on textiles and on polypropylene surfaces. The excellent antibacterial and antifungal activity of the fragrant coatings on cotton bandages, and polypropylene surface against Escherichia coli (E. coli), Salmonella paratyphi A (S. paratyphi A) and the yeast Candida albicans (C. albicans) cultures was demonstrated. It is worth pointing out that these fragrant materials are edible, making them very useful for packaging. The mechanism of the edible fragrant coating formation and adhesion to the textile was discussed, and finally an up-scaling of the sonochemical process for textile coating was carried out.

Ultrasound coating of polydimethylsiloxanes with antimicrobial enzymes

Enzyme cellobiose dehydrogenase (CDH) nanoparticles were created by the ultrasonic waves and subsequently deposited on the PDMS surface. PDMS sheets treated for 3 min significantly reduce the amount of viableS. aureuscells as well as the total amount of biomass deposited on the surface.