“…A. UV-Vis spectra of the plasmonic nanopaper upon corrosive vapour (ammonia) exposure using 10 and 1000 µL of 30% ammonia solution spontaneously volatilized for between 2 and Food spoilage monitoring: a proof-of-concept Aiming at demonstrating a practical application for this approach, as a proof-of-concept, we reasoned that the studied phenomenon could be useful for food spoilage monitoring given that ammonia is released as a major agent along with other volatile compounds during the degradation process, in particular trimethylamine, dimethylamine, histamine, putrescine, cadaverine, short-chain carbonyls, acids, sulfur compounds, and N-cyclic compounds as well as unsaturated aldehydes in fish spoilage, 29 and alcohols, aldehydes, esters, ketones, and carbon dioxide in meat spoilage. 30 We again used the experimental set-up illustrated in Scheme 1B. 5 g of fish or meat was placed inside the sealed container, and was left at room temperature for 60 hours.…”