A colorimetric hydrogen sulfide sensor based on gellan gum-silver nanoparticles bionanocomposite for monitoring of meat spoilage in intelligent packaging

A colorimetric hydrogen sulfide (H2S) sensor based on gellan gum capped silver nanoparticles was developed to real-time monitor meat spoilage. The colorimetric sensor strategy was attributed to the ultrastrong binding ability of Ag with H2S to form Ag2S. The sensor enables the analysis of H2S with a limit of detection (LOD) of 0.81 μM, and it exhibited excellent selectivity toward H2S against other volatile components generated from chicken...