Production of Active Biodegradable Films as Eco-Friendly Packaging | ||
| Journal of Food and Dairy Sciences | ||
| Articles in Press, Corrected Proof, Available Online from 23 November 2025 PDF (484.18 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jfds.2025.434218.1215 | ||
| Authors | ||
| M. M. Rabei* 1; Gehan A. Ghoniem* 1; M. A. Salama2; M. M. Hassan* 1 | ||
| 1Food Indutries Department, Faculty of Agriculture, Mansoura University | ||
| 2Food Technology Research Institute, Agricultural Research Center, Giza, Egypt. | ||
| Abstract | ||
| This study investigated the potential of tomato by-products phenolic extract (TO) as a functional additive for developing biodegradable polyvinyl alcohol (POVA) films and its application in guava fruit preservation. Tomato by-products powder was found to be rich in phenolic compounds, particularly chlorogenic acid (1001.33 µg/g), rutin (688.25 µg/g), catechin (612.35 µg/g), and gallic acid (587.27 µg/g), contributing to a high antioxidant activity (87.46%). Incorporation of TO into POVA films significantly increased film thickness (0.15 mm), tensile strength (80.93 MPa), elongation at break (75.83%), water contact angle (81.56°), and biodegradability (25.61% weight loss after 30 days), while reducing solubility and water vapor permeability. In postharvest storage, guava fruits packaged with POVA/TO films showed reduced weight loss (10.27% vs. 21.58% in control), higher firmness (26.07 N vs. 10.27 N), delayed increases in total soluble solids and titratable acidity, and improved retention of vitamin C (70.11 mg/100 g) and phenolic compounds (36.02 mg GAE/100 g) after 4 weeks at 4 °C. Antioxidants activity (DPPH) was also maintained at significantly higher levels (60.53%) in POVA/TO-packaged fruits compared to control (30.05%). These findings demonstrate that TO incorporation enhances the physicochemical, mechanical, and active functionalities of POVA films, and effectively extending the shelf life and nutritional quality of guava fruits. | ||
| Keywords | ||
| Biodegradable films; Polyvinyl alcohol (POVA); Tomato by-products-; Guava preservation; Shelf-life extension | ||
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