[3PS-238]
Biocompatible colorimetric sensors for food spoilage detection using porous microbead
발표자정새하늘 (국민대학교)
연구책임자이현정 (국민대학교)
Abstract
To prevent diseases caused by food spoilage and reduce unnecessary disposal of expired foods, interest in food spoilage detection technology has been increasing. To verify food spoilage more conveniently and safely, this study developed a spoilage detection sensor using biocompatible porous microbead. The sensor operates on the principle that a pH change is induced by basic gases generated during food spoilage, leading to a color change in the bead. This allows users to intuitively determine spoilage status. The porous structure of the microbead maximizes the surface area, enhancing reaction speed and sensitivity. The porous structure of the bead was confirmed using scanning electron microscopy (SEM). In addition, the successful coating of the porous microbead with a pH indicator was verified through zeta potential measurements. Furthermore, the discoloration performance of microbead coated with pH indicator was evaluated over time and under varying ammonia concentration conditions.