The Experts below are selected from a list of 105342 Experts worldwide ranked by ideXlab platform
David Julian Mcclements - One of the best experts on this subject based on the ideXlab platform.
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interaction of cationic antimicrobial ɛ polylysine with food grade Biopolymers dextran chitosan carrageenan alginate and pectin
Food Research International, 2014Co-Authors: Yuhua Chang, Lynne Mclandsborough, David Julian McclementsAbstract:The cationic Biopolymer e-polylysine (e-PL) is a food-grade antimicrobial that is highly effective against food pathogens and spoilage organisms. In compositionally complex environments, the antimicrobial activity of cationic e-PL is likely to be impacted by its interactions with other charged species. The purpose of this study was to characterize the interactions of cationic e-PL with various food grade Biopolymers with different charge characteristics: anionic (carrageenan, alginate, pectin), neutral (dextran), and cationic (chitosan). Isothermal titration calorimetry (ITC), micro-electrophoresis (ME) and turbidity measurements were used to characterize the interactions and the nature of any aggregates formed. Our measurements suggested that there was little interaction or complex formation between cationic e-PL and cationic or neutral Biopolymers, but that strong electrostatic interactions and complex formation occurred between cationic e-PL and anionic Biopolymers. The solubility of the aggregates formed depended on Biopolymer type and the mass ratio of Biopolymers to e-PL. The results of this study have important implications for the application of e-PL in compositionally complex systems.
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Biopolymer based nanoparticles and microparticles fabrication characterization and application
Current Opinion in Colloid and Interface Science, 2014Co-Authors: David Julian Mcclements, Iris J JoyeAbstract:Tailor-made microparticles and nanoparticles are finding increasing use in food products to alter their nutritional characteristics, flavor profile, appearance, rheology, stability, and processability. These particles are often fabricated from food-grade Biopolymers, such as proteins and polysaccharides. Food Biopolymers display a diverse range of molecular and physicochemical properties (e.g. molecular weight, charge, branching, flexibility, polarity, and solubility) which enables the assembly of colloidal particles that exhibit a broad range of functional attributes. By careful selection of appropriate Biopolymers and assembly methods, Biopolymer particles can be fabricated with tailored behaviors or features. In this article, we review recent developments in the design and fabrication of functional Biopolymer nanoparticles and microparticles, and highlight some of the challenges that will be the focus of future research.
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impact of cosolvents on formation and properties of Biopolymer nanoparticles formed by heat treatment of β lactoglobulin pectin complexes
Food Hydrocolloids, 2009Co-Authors: Wanlop Chanasattru, Owen G Jones, Eric A Decker, David Julian McclementsAbstract:Abstract The purpose of this study was to determine the influence of neutral cosolvents on the formation and properties of Biopolymer nanoparticles formed by thermal treatment of protein–polysaccharide electrostatic complexes. Biopolymer particles were formed by heating (85 °C, 20 min) an aqueous solution containing a globular protein (β-lactoglobulin) and an anionic polysaccharide (beet pectin) above the thermal denaturation temperature ( T m ) of the protein under pH conditions where the Biopolymers formed electrostatic complexes (pH 5). The impact of two neutral cosolvents (glycerol and sorbitol) on the self-association of β-lactoglobulin and on the formation of β-lactoglobulin–pectin complexes was examined as a function of solution pH (3–7) and temperature (30–95 °C). Glycerol had little impact on the pH-induced self-association or aggregation of the Biopolymers, but it did increase the thermal aggregation temperature ( T a ) of the protein–polysaccharide complexes, which was attributed to its ability to increase aqueous phase viscosity. Sorbitol decreased the pH where insoluble protein–polysaccharide complexes were formed, and greatly increased their T a , which was attributed to its ability to increase T m , alter Biopolymer–Biopolymer interactions, and increase aqueous phase viscosity. This study shows that neutral cosolvents can be used to modulate the properties of Biopolymer nanoparticles prepared by thermal treatment of protein–polysaccharide electrostatic complexes.
Gopalakrishnan Kumar - One of the best experts on this subject based on the ideXlab platform.
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a review on Biopolymer production via lignin valorization
Bioresource Technology, 2019Co-Authors: R. Jasmine Banu, Yukesh R Kannah, Poornima T Devi, Mk Gunasekaran, S. Kavitha, Gopalakrishnan KumarAbstract:Abstract Lignin based Biopolymer (value added products) production is the most promising technology in the perspective of lignin valorization and sustainable development. Valorization of lignin gain the potentials to produce Biopolymers such as polyhydroxyalkanoates, polyhydroxybutyrates, polyurethane etc. However, lignin valorization processes still needs development due to the recalcitrant nature of lignin which restricts its potential to produce valuable products. Many novel extraction strategies have been developed to fragment the lignin structure and make ease the recovery of valuable products. Achieving in depth insights on lignin characteristics and structure will help to understand the metabolic and catalytic degradative pathways needed for lignin valorization. In the view of multipurpose characteristics of lignin for Biopolymer production, this review will spot light the potential applications of lignin and lignin based derivatives on Biopolymer production, various lignin separation technologies, lignin depolymerization process, Biopolymers production strategies and the challenges in lignin valorization will be addressed and discussed.
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Biopolymer production in bio electrochemical system literature survey
Bioresource Technology Reports, 2019Co-Authors: R. Jasmine Banu, Dinesh M Kumar, Mk Gunasekaran, Gopalakrishnan KumarAbstract:Abstract Bio-electrochemical systems (BESs) are the bacterial systems which are utilized to harvest electricity directly by treating waste or wastewater together with production of valuable chemicals such as Biopolymer, various alcohols, acetate, butyrate and also generation of biogas such as CH4 and H2. Biopolymers are vital substitutes for the petroleum-based plastics due to environment friendly manufacturing methods, biocompatibility and biodegradability. Biopolymers are biodegradable components which are produced from renewable resources by using microorganisms as intracellular carbon and energy storage compounds. In this review, a detailed analysis of various bio-electrochemical systems was explained. This review also provides a discussion about Biopolymer production in various bio-electrochemical systems.
Argyrios Margaritis - One of the best experts on this subject based on the ideXlab platform.
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recent advances in microbial Biopolymer production and purification
Critical Reviews in Biotechnology, 2014Co-Authors: Dirk Kreyenschulte, Rainer Krull, Argyrios MargaritisAbstract:AbstractOver the past decades a large amount of Biopolymers originating from various types of microorganisms have been reported. With ongoing research the number of possible applications has increased rapidly, ranging from use as food additives and biomedical agents to biodegradable plastics from renewable resources. In spite of the plethora of applications, the large-scale introduction of Biopolymers into the market has often been forestalled by high production costs mainly due to complex or inefficient downstream processing. In this article, state-of-the-art methods and recent advances in the separation and purification of microbial polymers are reviewed, with special focus on the Biopolymers, γ-polyglutamic acid and xanthan gum. Furthermore, a study of the general factors affecting production and purification is presented, including Biopolymer rheology, enzymatic degradation and production of Biopolymer mixtures.
Suchart Siengchin - One of the best experts on this subject based on the ideXlab platform.
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Structure and Surface Morphology Techniques for Biopolymers
Biofibers and Biopolymers for Biocomposites, 2020Co-Authors: Sabarish Radoor, Jasila Karayil, Aswathy Jayakumar, E. K. Radhakrishnan, Lakshmanan Muthulakshmi, Sanjay Mavinkere Rangappa, Suchart Siengchin, Jyotishkumar ParameswaranpillaiAbstract:Different techniques such as optical microscopy, scanning electron microscopy, transmission electron microscopy, atomic force microscopy, nuclear magnetic resonance, X-ray diffraction, and Fourier-transform infrared spectroscopy are used for the examination of Biopolymer-based materials. This chapter discusses the characterisation of structure and surface morphology of the Biopolymers, their blends, and composites by these techniques. A careful examination of Biopolymers, their blends and composites are essential for the fruitful application of these materials.
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A comprehensive review on chemical properties and applications of Biopolymers and their composites.
International journal of biological macromolecules, 2020Co-Authors: Ashish George, Jyotishkumar Parameswaranpillai, M. R. Sanjay, Rapeeporn Srisuk, Suchart SiengchinAbstract:In a world that canopies numerous opportunities to advance towards a green sustainable life, Biopolymer development offers a platform that fits into the paradigm of achieving an eco-friendly environment whilst reducing reliance on the scarce fossil fuel elements for the fabrication of day-to-day products. Today's technological improvements have aided Biopolymer end-products to escalate to higher purposes and soon may have their performance level in par with the petroleum-based synthetic polymers. The motive of this paper is to shimmer light on some aspects of Biopolymers that include its classes, properties, composites and applications. Depending on the type of class on the basis of various categories, many enthralling chemistries of polymer composition can be substantiated. Essential properties can imparted to the ensuing Biopolymer by altering its chemical configuration and method of synthesis while also focusing on its functional purpose. Nowadays, Biopolymer composites blend qualities of one Biopolymer with another to acquire an enhanced component that showcases unique explicit attributes. There are several techniques to process Biopolymer composites, of which in-situ, infiltration and electrospinning methods have captured considerable limelight. Biopolymers and its composites have embarked captivating impressions in regions of biomedical, packaging, agricultural and automotive applications. Although their efficacy is yet to reach their fossil fuel counterparts, Biopolymers have laid a distinguishing mark that will continue to inspire creation of novel substances for many years to come.
R. Jasmine Banu - One of the best experts on this subject based on the ideXlab platform.
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a review on Biopolymer production via lignin valorization
Bioresource Technology, 2019Co-Authors: R. Jasmine Banu, Yukesh R Kannah, Poornima T Devi, Mk Gunasekaran, S. Kavitha, Gopalakrishnan KumarAbstract:Abstract Lignin based Biopolymer (value added products) production is the most promising technology in the perspective of lignin valorization and sustainable development. Valorization of lignin gain the potentials to produce Biopolymers such as polyhydroxyalkanoates, polyhydroxybutyrates, polyurethane etc. However, lignin valorization processes still needs development due to the recalcitrant nature of lignin which restricts its potential to produce valuable products. Many novel extraction strategies have been developed to fragment the lignin structure and make ease the recovery of valuable products. Achieving in depth insights on lignin characteristics and structure will help to understand the metabolic and catalytic degradative pathways needed for lignin valorization. In the view of multipurpose characteristics of lignin for Biopolymer production, this review will spot light the potential applications of lignin and lignin based derivatives on Biopolymer production, various lignin separation technologies, lignin depolymerization process, Biopolymers production strategies and the challenges in lignin valorization will be addressed and discussed.
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Biopolymer production in bio electrochemical system literature survey
Bioresource Technology Reports, 2019Co-Authors: R. Jasmine Banu, Dinesh M Kumar, Mk Gunasekaran, Gopalakrishnan KumarAbstract:Abstract Bio-electrochemical systems (BESs) are the bacterial systems which are utilized to harvest electricity directly by treating waste or wastewater together with production of valuable chemicals such as Biopolymer, various alcohols, acetate, butyrate and also generation of biogas such as CH4 and H2. Biopolymers are vital substitutes for the petroleum-based plastics due to environment friendly manufacturing methods, biocompatibility and biodegradability. Biopolymers are biodegradable components which are produced from renewable resources by using microorganisms as intracellular carbon and energy storage compounds. In this review, a detailed analysis of various bio-electrochemical systems was explained. This review also provides a discussion about Biopolymer production in various bio-electrochemical systems.