This work was investigated to prepare a reinforcing composite packaging film composited of soy protein/polyvinyl alcohol (PVA) and nano-TiOsub.2. First, different film compositions were designed by ...the particle size of nano-TiOsub.2, concentration of nano-TiOsub.2, concentration of polyvinylpyrrolidone (PVP, a dispersing agent for nano-TiOsub.2), and pH of film casting solution. Then, the film composition that yielded the optimal physical properties was identified using orthogonal array design single-factor experiments, considering its physical properties, including tensile strength, elongation, water absorption, water vapor transmission, oxygen permeation, thermal property, and film morphology. The results displayed that the optimal film composition was (1) soy protein/PVA film with 2.5 wt% nano-TiOsub.2, (2) 30 nm nano-TiOsub.2 particle size, (3) 1.5 wt% PVP, and (4) pH 6.0 of film-forming solution. It yielded tensile strength of 6.77 MPa, elongation at break rate of 58.91%, and water absorption of 44.89%. Last, the films were characterized by scanning electron microscope (SEM) and differential scanning calorimetry (DSC). SEM analysis showed that compared with the film without TiOsub.2, the film containing TiOsub.2 has a smoother surface, and DSC determined that adding nano-TiOsub.2 can improve the thermostability of soy protein/PVA film. Therefore, the film prepared in this paper is expected to provide a new theoretical basis for use in the packaging industry.
Controlled release packaging (CRP) is an innovative technology that uses the package to release active compounds in a controlled manner to improve safety and quality for a wide range of food products ...during storage. This paper provides a critical review of the uniqueness, design considerations, and research gaps of CRP, with a focus on the kinetics and mechanism of active compounds releasing from the package. Literature data and practical examples are presented to illustrate how CRP controls what active compounds to release, when and how to release, how much and how fast to release, in order to improve food safety and quality.
Advances in research and development of bioplastic for food packaging Jariyasakoolroj, Piyawanee; Leelaphiwat, Pattarin; Harnkarnsujarit, Nathdanai
Journal of the science of food and agriculture,
November 2020, 2020-Nov, 2020-11-00, 20201101, Letnik:
100, Številka:
14
Journal Article
Packaging performs a number of functions in the containment, protection, shipment and selling of goods. This book recognizes that food packaging is a fast-growing area that impacts upon the important ...areas of product shelf-life and food safety. Each chapter provides information on the scientific background, new material development and utilization, and case studies of the use of new systems for perishable food products. This book is intended for specialists in the food packaging industries, scientists involved in shelf-life and food safety, advanced food science students at universities.
Concerns on environmental waste problems caused by non-biodegradable petrochemical-based plastic packaging materials as well as the consumer's demand for high quality food products has caused an ...increasing interest in developing biodegradable packaging materials using annually renewable natural biopolymers such as polysaccharides and proteins. Inherent shortcomings of natural polymer-based packaging materials such as low mechanical properties and low water resistance can be recovered by applying a nanocomposite technology. Polymer nanocomposites, especially natural biopolymer-layered silicate nanocomposites, exhibit markedly improved packaging properties due to their nanometer size dispersion. These improvements include increased modulus and strength, decreased gas permeability, and increased water resistance. Additionally, biologically active ingredients can be added to impart the desired functional properties to the resulting packaging materials. Consequently, natural biopolymer-based nanocomposite packaging materials with bio-functional properties have a huge potential for application in the active food packaging industry.
Plant-based proteins as an alternative to synthetic polymers have attracted the interest of the global packaging industry in the last decade due to their biodegradability, sustainability, ...environmental, and beneficial health claims.
This review covers the recent developments in biodegradable packaging such as edible films/coatings and innovative packaging materials based on plant protein sources. The importance, sources, and techno-functional properties of plant-derived proteins for food packaging are discussed. The impact of different additives on the functionality of plant protein-based biodegradable materials is also investigated. In addition, plant protein-based packaging characteristics and their application in food are also introduced.
The sustainability, biodegradability, renewability, and appropriate mechanical and techno-functional properties of proteins from plant origin make them an emerging substitute to the conventional synthetic polymers currently used as food packaging. The functional performance of plant protein-based biodegradable materials can be extended or enhanced by incorporating other additives or biopolymers. Bio-packaging materials made from plant-based proteins provide great potential for enhancing food quality and safety, reducing the environmental pollution.
Schematic representation of major plant sources with protein components as the origin of biopolymeric packaging materials for applications in food packaging. Display omitted
•Plant-based protein films/coatings provide great potential for enhancing food quality.•Plant-based protein films/coatings are delivery systems for various bioactives.•Blending plant-based protein with nanoparticles improves functionality of coatings/films.•Plant-based protein packaging characteristics and their application in foods are summarized.
