| 초록 |
Recently a social interest in well-being has increased needs for multi-functional devices to check the state of food. For a commercialization and popularization of food sensing technologies, diverse functionalities, low cost and convenience are required in developing food sensors. In this work, portable food sensors for checking visible food spoilage or fermentation state were fabricated using hydrogel microbeads. Hydrogel beads were produced by using alginate, which is one of biocompatible and environmentally harmless polymers and pH indicator dye molecules were included within microbeads in order to detect gases generated from food. Depending on the type or amount of generated gases from food, pH within bead is changed and the color change of microbeads is followed, which makes it easy to check the state of the food in real-time. By changing the properties of microbeads, sensing characteristics of the food gas sensor were investigated. |
