Abstract
An increase of environmental awareness recently has increased the interest of researchers in using of biopolymer-based films. The films have been prepared extensively by utilizing starch, carboxymethyl cellulose, chitosan, protein, gelatin, carrageenan, alginate, pectin, guar gum and pullulan. They are typically modified with surface-active agents (surfactants) such as glycerol monostearate, sucrose ester, sodium stearoyl lactate, sodium dodecyl sulfate, ethyl lauroyl arginate HCl, Span 20 to 80, Tween-20 to 80 and soy lecithin for improving the functional properties of the films. In this brief review, two types of biopolymer-based films that prepared through casting method were categorized, specifically solution- and emulsion-based films. The four types of surfactants, namely non-ionic, anionic, cationic and amphoteric surfactants that are regularly used to modify biopolymer-based films are also described. The functional properties of the films modified with different types of surfactants are briefly reviewed. This study enhances the attraction of researchers in biopolymer-based films and the improvement of new concepts in this niche area.
Highlights
Today—due to environmental concerns and growing of the biodegradable plastic industry—the use of biopolymer-based films in the food industry and food packaging has become a trend
In the last properties two decades, much research properties has been conducted with theelongation objective ofatimproving the affinities, contact angle, functional properties
Biopolymer raw materials, processing parameters and types of biopolymer-based films modified with surface-active agents have been briefly reviewed in this study
Summary
Today—due to environmental concerns and growing of the biodegradable plastic industry—the use of biopolymer-based films in the food industry and food packaging has become a trend. The films have moderate mechanical properties such as tensile strength and elongation at break [42] They have high water vapor permeability character [43] and poor moisture barrier property [44]. In the last properties two decades, much research properties has been conducted with theelongation objective ofatimproving the affinities (water vapor permeability, moisture content, solubility, swelling), contact angle, functional properties (e.g., mechanical properties (tensile strength, elongation at break),thermal water stability, (water oxygenvapor permeability and moisture opacity) of biopolymer-based films bycontact utilizing surfactants. 2020, 8,the on the preparation and modification of biopolymer-based films This is 4 ofthe purpose of creating an organized review in this study. To the best knowledge of the authors, no brief review has been created comprising
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
