Ricerc@Sapienza

A screen-printed electrode was modified using multi-walled carbon nanotubes (MWCNT) and titanium oxide nanoparticles (TiO2), with a bio-based ionic liquid (RTIL) as a drop-casting medium. The RTILs here used have been proved to be useful for immobilizing nanomaterials on the working electrode surface. The proposed platform has been used to analyze extra-virgin olive oils (EVOOs), produced with olives of known cultivar and geographic origin. The EVOOs were produced with the olives that have been collected in the Italian region of Lazio during 2016, 2017 and 2018 harvesting seasons.

A new electroanalytical method has been developed for the determination of polar antioxidant compounds in
extra virgin olive oils. This method is based on the extraction of polar antioxidant compounds from extra-virgin
olive oils by means of a deep eutectic solvent and their determination by a modified screen-printed electrode
platform. The platform sensitivity was increased by modifying the working electrode with MWCNT and TiO2
nanoparticles as modifiers and Nafion as a binder. The platform showed very good sensitivity in detecting polar

.

BACKGROUND: Chemical disinfection of surfaces and instruments for infection control in dental units is a relevant practice, especially at the time of antibiotic resistance microbes. Resistant bacteria are in fact, involved in the high incidence of healthcare-acquired infections, recognized as critical emergence in hospitals and clinics around the world.

Nanotechnology has paved the way to innovative food packaging materials and analytical methods to provide the consumers with healthier food and to reduce the ecological footprint of the whole food chain. Combining antimicrobial and antifouling properties, thermal and mechanical protection, oxygen and moisture barrier, as well as to verify the actual quality of food, e.g., sensors to detect spoilage, bacterial growth, and to monitor incorrect storage conditions, or anticounterfeiting devices in food packages may extend the products shelf life and ensure higher quality of foods.

In this work, the fabrication and properties of ultraviolet-sensing films based on hybrid nanomaterials, containing graphene nanoplatelets (GNP) as signal transducer and DNA as UV-sensitive element, are investigated. The sensor components are prepared by sonication-driven non-covalent assembly and are embedded in a polymer matrix for enhanced adhesion on several types of space-grade materials and structures. We show that these nanomaterial sensing films can be used to monitor the effects of UV radiation exposure in real time.

Although the term “epithelial to mesenchymal transformation” was used for the first time by Betty Hay in 1968, the earliest description of the EMT process probably dates back to drawings made by the Nobel Prize Santiago Ramòn y Cajal around 1890 (López-Novoa and Nieto, 2009).

Over the last decade nanomaterials have had a major impact on human health for the early detection and treatment of many diseases. The future success of clinically translatable nanomaterials lies in the combination of several functionalities to realize a personalized medical experience for patients. To maintain promises, concerns arising from toxic potential and off-target accumulation of nanomaterials must be addressed first.