Development of bionanocomposite film based on chia seed mucilage incorporated with ZnO nanoparticles and their application for preserving fresh rainbow trout (Oncorhynchus mykiss) fillets

Abstract

In this study, chia seed mucilage was used as the film-forming matrix. The antimicrobial and antioxidant activity of chia seed mucilage films has been attributed to Zn0-NPs. The addition of different concentrations of Zn0-NP (0.25%, 0.5% and 1%) to the chia seed mucilage film matrix significantly affected the mechanical, thermal, antioxidant and antimicrobial properties. It also improved the storage quality of rainbow trout fillets during storage at 4 degrees C for 18 days (p < 0.05). Total mesophilic aerobic bacteria count (TMAB) and thiobarbituric acid (TBA) count of the samples wrapped in chia seed mucilage films containing ZnO-NPs were significantly decreased compared to the control group (p < 0.05). While the shelf life of the samples wrapped with chia seed musilage film (CSM) was 6 days, it was determined as with CSM + 0.25% ZnO-NP CSM + 0.5% ZnO-NP and CSM + 1% ZnO-NP 12, 12 and 15 days, respectively. According to our findings, 1% ZnO-NP added chia seed musilage films can be recommended as a promising new packaging material for fish and fish products industry, especially against oxidative degradation while introducing the product to the market.