Effect of high-pressure processing on the packaging properties of biopolymer-based films: a review
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Date
2022-07-25
Authors
Hoque, Monjurul
McDonagh, Ciara
Tiwari, Brijesh K.
Kerry, Joseph P.
Pathania, Shivani
Journal Title
Journal ISSN
Volume Title
Publisher
MDPI
Published Version
Abstract
Suitable packaging material in combination with high-pressure processing (HPP) can retain nutritional and organoleptic qualities besides extending the product’s shelf life of food products. However, the selection of appropriate packaging materials suitable for HPP is tremendously important because harsh environments like high pressure and high temperature during the processing can result in deviation in the visual and functional properties of the packaging materials. Traditionally, fossil-based plastic packaging is preferred for the HPP of food products, but these materials are of serious concern to the environment. Therefore, bio-based packaging systems are proposed to be a promising alternative to fossil-based plastic packaging. Some studies have scrutinized the impact of HPP on the functional properties of biopolymer-based packaging materials. This review summarizes the HPP application on biopolymer-based film-forming solutions and pre-formed biopolymer-based films. The impact of HPP on the key packaging properties such as structural, mechanical, thermal, and barrier properties in addition to the migration of additives from the packaging material into food products were systemically analyzed. HPP can be applied either to the film-forming solution or preformed packages. Structural, mechanical, hydrophobic, barrier, and thermal characteristics of the films are enhanced when the film-forming solution is exposed to HPP overcoming the shortcomings of the native biopolymers-based film. Also, biopolymer-based packaging mostly PLA based when exposed to HPP at low temperature showed no significant deviation in packaging properties indicating the suitability of their applications. HPP may induce the migration of packaging additives and thus should be thoroughly studied. Overall, HPP can be one way to enhance the properties of biopolymer-based films and can also be used for packaging food materials intended for HPP.
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Keywords
High-pressure processing , Film-forming solution , Biopolymer-based packaging , Morphological properties , Mechanical properties , Thermal properties , Barrier properties , Migration potential
Citation
Hoque, M., McDonagh, C., Tiwari, B.K., Kerry, J.P. and Pathania, S. (2022) ‘Effect of high-pressure processing on the packaging properties of biopolymer-based films: a review’, Polymers, 14(15), 3009 (30 pp). https://doi.org/10.3390/polym14153009
Copyright
© 2022 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/)