Real-Time Detection of Packaged Seer Fish Spoilage Using Halochromic Optical Nose

Abstract

ABSTRACT Development of a biodegradable and recyclable halochromic biosensor for monitoring spoilage of packaged seer fish is described in this study. The biosensor was prepared completely from materials of natural origin. The sensor was characterized by X-ray diffraction pattern (XRD), scanning electron microscopy (SEM), energy dispersive X-ray spectrometry (EDS) and image processing by CIELab. The biosensor indicated spoilage of fish by exhibiting a visible color change from brownish pink to yellowish green. The results of the biodegradability test indicated that the developed sensors decompose at the rate of 60–70% in 2 weeks. This biosensor can be recycled at least six times. It was also estimated that the cost for one biosensor per package was approximately 2 cents. Thus, the biosensor developed in this study is economical, biodegradable, and efficient in monitoring spoilage of packaged fishes. Hence, this economical biosensor can easily be adopted by retail sellers and exporters. The biosensor developed in this study is promising for monitoring spoilage of packaged fishes in retail markets.