| 초록 |
Networking of carboxylated cellulose nanofibrils as a matrix in production of biodegradable, low-cost composite hydrogels for the detection of ammonia emitted from meat was investigated. Dynamic viscoelastic, internal morphology, chemical structure, thermal behavior, compression strength and UV-vis properties of the resulting hydrogels was studied. Anthocyanins as indicator dyes were successfully extracted from Aronia and conjugated onto the nanocellulose in hydrogels. The colorimetric hydrogels presented visible color changes (from pink to white brown and colorless) over time due to gases emitted from meat so that CIELab results confirmed that the resulting composite hydrogels could be used to monitor the real-time and visual detecting meat freshness. The resulting interpenetrated polymer network hydrogel taking advantage of their low cost, biocompatibility, distinctive color change, containing free water to interact with gases, fraud free, no leaching problems etc. could be promising candidate to guarantee food freshness and preventing food spoilage and decreasing greenhouse gases. |
