Disposable biosensors based on metal nanoparticles.

The coronavirus disease2019 (COVID-19) pandemic has highlighted the need for disposable biosensors that can detect viruses in infected patients quickly due to fast response and also at a low cost.The present review provides an overview of the applications of disposable biosensors based on metal nanoparticles in enzymatic and non-enzymatic sensors with special reference to glucose and HO, immunosensors as well as genosensors (DNA biosensors in which the recognized event consists of the hybridization reaction)for point-of-care diagnostics. The disposable biosensors for COVID19 have also been discussed.

Cyclam-based antibacterial molecules eradicate Gram-negative superbugs with potent efficacy against human corneal infection.

Cyclam-based antibacterial molecules (CAMs) that display potent activity against both the planktonic and stationary phase of multidrug-resistant Gram-negative bacteria were rationally designed. The optimized compound retained its activity in human plasma and eradicated preformed biofilms. It also revealed excellent potency in an ex vivo model of human corneal infections with negligible propensity of resistance development.