| Title |
Development and Evaluation of a Novel-Thymol@Natural-Zeolite/Low-Density-Polyethylene Active Packaging Film: Applications for Pork Fillets Preservation |
| ID_Doc |
13177 |
| Authors |
Salmas, CE; Giannakas, AE; Karabagias, VK; Moschovas, D; Karabagias, IK; Gioti, C; Georgopoulos, S; Leontiou, A; Kehayias, G; Avgeropoulos, A; Proestos, C |
| Title |
Development and Evaluation of a Novel-Thymol@Natural-Zeolite/Low-Density-Polyethylene Active Packaging Film: Applications for Pork Fillets Preservation |
| Year |
2023 |
| Published |
Antioxidants, 12, 2 |
| Abstract |
Sustainability, the circular economy, and the "greenhouse" effect have led the food packaging industry to use naturally available bio-compounds. The integration of such compounds in packaging films increases food safety and extends food shelf-life. The development of an active/antioxidant packaging film based on the widely commercially used low-density polyethylene, natural zeolite, and Thymol, a natural extract from thyme oil, is presented in this work. The obtained active films were characterized using X-Ray Diffraction, Fourier-Transform Infrared Spectroscopy, Scanning Electron Microscopy, and Differential Scanning Calorimetry techniques. The tensile strength, water-oxygen barrier properties, and total antioxidant activity were measured. Low-density polyethylene incorporated with Thymol@Natural Zeolite at a proportion of 15 wt% was the most promising material and was used as film to wrap-up pork fillets. The thiobarbituric acid (TBA) method and heme iron measurements indicated a delayed lipids oxidation using this film. A linear correlation between the TBA method and heme iron values seems to be established, which could result in a fast method to determine the degree of lipid oxidation in pork fillets. Finally, a two-stage diffusion process during Thymol release was observed, and the values of the diffusion coefficient was 2.09 x 10(-7) and 1.21 x 10(-8) cm(2)/s for each stage. The applied pseudo-second sorption model provided a rate constant k(2) = 0.01647 (s(-1)). These results indicate the strong potential of such films to be used as food packaging materials free of E-number preservatives. |
| PDF |
https://www.mdpi.com/2076-3921/12/2/523/pdf?version=1676800448
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