Multifunctional and edible egg white/amylose-tannin bilayer film for perishable fruit preservation.

Autor: In Kim T; Department of Organic Materials Engineering, Chungnam National University, Daejeon 34134, South Korea., Lee SJ; Department of Organic Materials Engineering, Chungnam National University, Daejeon 34134, South Korea., Chathuranga K; Department of Veterinary Microbiology, College of Veterinary Medicine, Chungnam National University, Daejeon 34134, South Korea., Lee JS; Department of Veterinary Microbiology, College of Veterinary Medicine, Chungnam National University, Daejeon 34134, South Korea., Kim MH; Department of Textile Engineering, Kyungpook National University, Sangju 37224, South Korea. Electronic address: mhkim88@knu.ac.kr., Park WH; Department of Organic Materials Engineering, Chungnam National University, Daejeon 34134, South Korea. Electronic address: parkwh@cnu.ac.kr.
Jazyk: angličtina
Zdroj: International journal of biological macromolecules [Int J Biol Macromol] 2024 Aug; Vol. 274 (Pt 2), pp. 133207. Date of Electronic Publication: 2024 Jun 17.
DOI: 10.1016/j.ijbiomac.2024.133207
Abstrakt: The substantial waste of perishable foods during transportation significantly contributes to greenhouse gas emissions, intensifying the climate crisis. To mitigate the rapid spoilage of fruits, an eco-friendly bilayer film was developed using natural egg white (EW), amylose (Am), and tannic acid (TA). The EW/Am-TA bilayer film features a primary layer of amphiphilic EW, ensuring a uniform coating on hydrophobic fruit surfaces, and a secondary layer composed of Am and TA, imparting notable tensile strength (5.3 ± 0.5 MPa) and elongation at break (28.5 ± 4.1 %). This bilayer film effectively shields fruits from UV-B and UV-C radiation (~0 % transmittance at 280 and 330 nm) and exhibits antioxidant and antibacterial properties due to the presence of TA. Fruits such as bananas, avocados, and cherry tomatoes, when dip-coated with the optimized EW/Am-TA bilayer, maintained their freshness, color, weight, and texture for up to seven days, demonstrating the effectiveness of this bilayer coating in food preservation. The natural materials in the coated film are edible and can be safely removed with tap water at room temperature in <10 s, posing no food safety risks. Thus, the proposed bilayer coating presents a significant solution to the global problem of food waste.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that may have influenced the work reported in this study.
(Copyright © 2024 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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