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Nanoparticles in Active Polymer Food Packaging
24 Nov 2015-
TL;DR: An overview of applications for various types of nanoparticles, such as different metal-based substances, and explains their role in polymer food packaging is given in this article, which also elaborates the mechanism of activity of each type of nanoparticle, for example: antimicrobial activity, oxygen absorption, ultraviolet blocking properties, water vapour permeability.
Abstract: Active polymer food packaging is packaging which has been designed to deliberately interact with food or with a direct food environment to reduce oxygen and moisture levels, preserve flavourings and the quality of the food. New concepts of active and intelligent packaging play an increasingly important role by offering numerous and innovative solutions for extending the shelf- life or for maintaining, improving or monitoring food quality and safety. This is the driving force for the food packaging industry’s development of new and improved packaging concepts using nanoparticles. This book gives an overview of applications for various types of nanoparticles, such as different metal based substances, and explains their role in polymer food packaging. The book also elaborates the mechanism of activity of each type of nanoparticle, for example: antimicrobial activity, oxygen absorption (scavengers, ultraviolet blocking properties, water vapour permeability. The characterisation of polymer nanocomposite materials and the regulatory aspects of nanomaterials are also discussed. Information is provided about the polymers and polymer nanocomposites, and in addition, the book provides information about new food packaging materials with improved mechanical, barrier and antimicrobial properties to preserve the food during transport and storage.
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TL;DR: The demonstrated barrier and food protection characteristics of the CS-CAP-ZnO films attested its suitability as a primary food packaging material that can be used to increase the shelf life of black grape fruits.
136 citations
TL;DR: The obtained data confirm the efficiency of the prepared nTiO2 nanocomposite films to extend the shelf-life of food and exhibited significant UV-barrier properties and enhanced antimicrobial activity especially at high contents of n TiO2.
47 citations
TL;DR: In this article, a review on microplastics and their adverse effects on the environment based on their bioactivity is presented, where the main topic covered is MPs' ecotoxicity on various aquatic organisms such as bacteria, algae, daphnids, and fish.
Abstract: High living standards and a comfortable modern way of life are related to an increased usage of various plastic products, yielding eventually the generation of an increased amount of plastic debris in the environment. A special concern is on microplastics (MPs), recently classified as contaminants of emerging concern (CECs). This review focuses on MPs’ adverse effects on the environment based on their bioactivity. Hence, the main topic covered is MPs’ ecotoxicity on various aquatic (micro)organisms such as bacteria, algae, daphnids, and fish. The cumulative toxic effects caused by MPs and adsorbed organic/inorganic pollutants are presented and critically discussed. Since MPs’ bioactivity, including ecotoxicity, is strongly influenced by their properties (e.g., types, size, shapes), the most common classification of MPs types present in freshwater are provided, along with their main characteristics. The review includes also the sources of MPs discharge in the environment and the currently available characterization methods for monitoring MPs, including identification and quantification, to obtain a broader insight into the complex problem caused by the presence of MPs in the environment.
43 citations
Cites background from "Nanoparticles in Active Polymer Foo..."
...With the increase in the latter property, the elastic modulus, tensile strength, stiffness, and surface hardness also increase, but impact strength decreases [43]....
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...PP is highly resistant to water, inorganic chemicals, organic solvents, and lubricants; degradation occurs by strong oxidants [43]....
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...hoses; disposable medical clothing; synthetic fibers, bottles, containers, insulators, 3D printing filaments, and trays [7,43,44]....
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...Commercial PP is approximately 90% isotactic with 60–70% crystallinity [43]....
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...PS is poor oxygen and vapor barrier and sensitive to UV irradiation (it yellows) [6,43]....
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TL;DR: Shelf-life studies of tomatoes showed significant resistance to mass loss and spoilage when coated with the sample containing 5 wt% of n TiO2, and Mechanical and antimicrobial properties were improved in the presence of nTiO2.
39 citations
TL;DR: In this article, the authors present and discuss the current state on studies involving amphibians and plastic particles, based on a broad approach to studies published in the last 5 years, and confirm the scarcity of available data on the toxicity of plastic particles in amphibians.
30 citations