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Effect of pullulan-chitosan bilayer film containing titanium dioxide (TiO2) and Artemisia dracunculus essential oil on the quality properties of rainbow trout during storage in refrigerator
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Ainaz Khodanazary    |
| , khodanazary@yahoo.com |
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Abstract: (11 Views) |
Background and objectives: Nowadays, there is a serious ecological problem with synthetic plastics in seafood packaging because of their total non-biodegradability. The objective of this study is the estimation of influence of pullulan (P)-chitosan (CH) film in combination with titanium dioxide nanoparticles (TiO2 NPs) and tarragon essential oil (TEO) on the bacterial counts, physicochemical properties, and sensory analysis of rainbow trout fillets during refrigerated storage.
Methods: For this aim, the treated fillets were divided including: pullulan-chitosan (PCH), PCH-TiO2, PCH-TEO, and PCH/TiO2-TEO.
Findings: The results demonstrate that the combination of TiO2 and TEO with PCH solution is an active nanocomposite film with antimicrobial and antioxidant effects. The wrapped fillets improved the physicochemical properties (such as total volatile bases- nitrogen (TVB-N), pH, peroxide value (POV), and thiobarbituric acid (TBA)) during refrigeration storage. The highest rate of TVB-N (30.33 mg/N100g), pH (7.04), POV (1.79 meq peroxide/1000g lipid), and TBA (3.07 mg MDA/kg) was recorded in PCH/TiO2-TEO wrapped fillets on day 12. The PCH-TEO was better than the (PCH-TiO2) groups in reducing the rate of oxidation of lipids of rainbow trout fillets. However, there was no significant effect between them in the control of microbial population. The sensory acceptance score in rainbow trout fillet wrapped with PCH/TiO2-TEO was better than other samples on days 12, and it was lower the critical score for fishery products.
Conclusion: Overall, these findings suggest that TiO2/TEO PCH-based nanocomposite film could be utilized as alternative packaging method in seafood products with notable antioxidant, antibacterial, and nutritional properties.
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| Keywords: Pullulan, Chitosan, TiO2, Tarragon essential oil, Nanocomposite film, Rainbow trout fillet. |
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Full-Text [PDF 2064 kb]
(6 Downloads)
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Type of Study: Research/ Original/ Regular Article |
Subject:
Fisheries and Aquaculture
Received: 2024/12/5 | Revised: 2026/01/18 | Accepted: 2025/12/6 | ePublished: 2026/01/27
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