Academic literature on the topic 'Biopolymers characterisation'

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Journal articles on the topic "Biopolymers characterisation"

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John, Maya Jacob, Nokuzola Dyanti, Teboho Mokhena, Victor Agbakoba, and Bruce Sithole. "Design and Development of Cellulosic Bionanocomposites from Forestry Waste Residues for 3D Printing Applications." Materials 14, no. 13 (2021): 3462. http://dx.doi.org/10.3390/ma14133462.

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This paper deals with the development of cellulose nanofibres (CNFs) reinforced biopolymers for use in packaging applications. Cellulose nanofibres were extracted from sawdust by a combination of chemical and mechanical treatments. The extracted cellulose nanofibres were chemically modified (fCNFs) and characterised by Fourier Transform Infrared Spectroscopy (FTIR). Bionanocomposites were prepared from biopolymers polylactic acid/polybutylene succinate (PLA/PBS) and cellulose nanofibres by compounding in a twin-screw extruder followed by injection moulding. The developed bionanocomposites were
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Oyekanmi, Adeleke A., N. I. Saharudin, Che Mohamad Hazwan, et al. "Improved Hydrophobicity of Macroalgae Biopolymer Film Incorporated with Kenaf Derived CNF Using Silane Coupling Agent." Molecules 26, no. 8 (2021): 2254. http://dx.doi.org/10.3390/molecules26082254.

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Hydrophilic behaviour of carrageenan macroalgae biopolymer, due to hydroxyl groups, has limited its applications, especially for packaging. In this study, macroalgae were reinforced with cellulose nanofibrils (CNFs) isolated from kenaf bast fibres. The macroalgae CNF film was after that treated with silane for hydrophobicity enhancement. The wettability and functional properties of unmodified macroalgae CNF films were compared with silane-modified macroalgae CNF films. Characterisation of the unmodified and modified biopolymers films was investigated. The atomic force microscope (AFM), SEM mor
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Gauthier, Emilie, Diane Ouwerkerk, Bronwyn Laycock, and Mary Fletcher. "Biopolymer Composites for Slow Release to Manage Pimelea Poisoning in Cattle." Proceedings 36, no. 1 (2020): 97. http://dx.doi.org/10.3390/proceedings2019036097.

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Cattle grazing the pastures of inland Australia can be poisoned by ingestion of certain native Pimelea plant species, particularly Pimelea trichostachya and Pimelea simplex. The Pimelea toxin, simplexin, causes often fatal restriction of the pulmonary venules, with resultant heart impacts and characteristic fluid accumulation (oedema) of the jaw and brisket regions. In certain years heavy livestock losses can occur. Currently, there is no effective vaccine or antidote for Pimelea poisoning and the only management strategy is to reduce contact between toxic plants and susceptible stock, for bee
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Chesneau, Cléa, Laura Larue, and Sabrina Belbekhouche. "Design of Tailor-Made Biopolymer-Based Capsules for Biological Application by Combining Porous Particles and Polysaccharide Assembly." Pharmaceutics 15, no. 6 (2023): 1718. http://dx.doi.org/10.3390/pharmaceutics15061718.

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Various approaches have been described in the literature to demonstrate the possibility of designing biopolymer particles with well-defined characteristics, such as size, chemical composition or mechanical properties. From a biological point of view, the properties of particle have been related to their biodistribution and bioavailability. Among the reported core–shell nanoparticles, biopolymer-based capsules can be used as a versatile platform for drug delivery purposes. Among the known biopolymers, the present review focuses on polysaccharide-based capsules. We only report on biopolyelectrol
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Jamiluddin, J., J. P. Siregar, C. Tezara, M. H. M. Hamdan, and S. M. Sapuan. "Characterisation of cassava biopolymers and the determination of their optimum processing temperatures." Plastics, Rubber and Composites 47, no. 10 (2018): 447–57. http://dx.doi.org/10.1080/14658011.2018.1534390.

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Ang, Teik-Hun, Kunlanan Kiatkittipong, Worapon Kiatkittipong, et al. "Insight on Extraction and Characterisation of Biopolymers as the Green Coagulants for Microalgae Harvesting." Water 12, no. 5 (2020): 1388. http://dx.doi.org/10.3390/w12051388.

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This review presents the extractions, characterisations, applications and economic analyses of natural coagulant in separating pollutants and microalgae from water medium, known as microalgae harvesting. The promising future of microalgae as a next-generation energy source is reviewed and the significant drawbacks of conventional microalgae harvesting using alum are evaluated. The performances of natural coagulant in microalgae harvesting are studied and proven to exceed the alum. In addition, the details of each processing stage in the extraction of natural coagulant (plant, microbial and ani
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Luca, Andreea, Florina-Daniela Cojocaru, Maria Stella Pascal, et al. "Decellularized Macroalgae as Complex Hydrophilic Structures for Skin Tissue Engineering and Drug Delivery." Gels 10, no. 11 (2024): 704. http://dx.doi.org/10.3390/gels10110704.

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Due to their indisputable biocompatibility and abundant source, biopolymers are widely used to prepare hydrogels for skin tissue engineering. Among them, cellulose is a great option for this challenging application due to its increased water retention capacity, mechanical strength, versatility and unlimited availability. Since algae are an unexploited source of cellulose, the novelty of this study is the decellularization of two different species, freshly collected from the Black Sea coast, using two different chemical surfactants (sodium dodecyl sulphate and Triton X-100), and characterisatio
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Abina, Andreja, Tjaša Korošec, Uroš Puc, and Aleksander Zidanšek. "Review of Bioplastics Characterisation by Terahertz Techniques in the View of Ensuring a Circular Economy." Photonics 10, no. 8 (2023): 883. http://dx.doi.org/10.3390/photonics10080883.

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The increasing scarcity of natural resources, worsening global climate change, environmental degradation, and rising demand for food are forcing the biotechnology and plastics industries to seek and apply circular economy models that would lead to a sustainable transition in the production and use of bioplastics. Circular economy models can improve the economic productivity of bio-based plastics and have a positive impact on the environment by reducing conventional plastic waste and the consumption of petrochemical feedstocks for plastic production. In addition, some agricultural wastes that h
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Gallego, Marta, Milagros Arnal, Pau Talens, Fidel Toldrá, and Leticia Mora. "Effect of Gelatin Coating Enriched with Antioxidant Tomato By-Products on the Quality of Pork Meat." Polymers 12, no. 5 (2020): 1032. http://dx.doi.org/10.3390/polym12051032.

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The use of edible biopolymers and natural additives obtained from food processing by-products is a sustainable strategy for food packaging applications. Gelatin is a biopolymer with great potential as a coating due to its low cost, high availability, and technological and functional properties. Among them, gelatin can be used as a carrier of bioactive compounds such as antioxidants, which can retard oxidation processes and thus extend the shelf-life of highly-perishable products. This study evaluated the effect of gelatin coating enriched with antioxidant tomato by-products hydrolysate (TBPH)
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Wongkaew, Malaiporn, Pikulthong Chaimongkol, Noppol Leksawasdi, et al. "Mango Peel Pectin: Recovery, Functionality and Sustainable Uses." Polymers 13, no. 22 (2021): 3898. http://dx.doi.org/10.3390/polym13223898.

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Concerns regarding the overconsumption of natural resources has provoked the recovery of biopolymers from food processing biomass. Furthermore, the current market opportunity for pectin in other areas has increased, necessitating the search for alternative pectin resources. This is also a step towards the sustainable and circular green economy. Mango peel is the byproduct of agro-processing and has been used for high value-added components such as polysaccharide biopolymers. Pectin derived from the peel is yet to be exploited to its greatest extent, particularly in terms of its separation and
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Dissertations / Theses on the topic "Biopolymers characterisation"

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Eissa-Mohamed, Ahmed Mohamed. "Synthesis and characterisation of novel biopolymers via click chemistry." Thesis, Durham University, 2011. http://etheses.dur.ac.uk/581/.

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The work throughout is the exploitation of copper catalysed Huisgen 1,3-dipolar azide–alkyne cycloaddition, as an efficient Click reaction, for the synthesis of novel biopolymers with a broad range of potential medical/industrial applications. The strategy is to develop a powerful tool for the synthesis of libraries of materials, which will be discussed in separate chapters. Chapter one is a general introduction on biopolymers and Click chemistry with emphasis on the related literature to the present work. Chapter two involves the application of Click chemistry on model compounds; 3-methyl ben
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Grech, David. "Development of a Quasi-concertina MEMS sensor for the characterisation of biopolymers." Thesis, University of Southampton, 2014. https://eprints.soton.ac.uk/375079/.

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Rapp, Telana. "Isolation and characterisation of genes encoding biopolymer manufacturing enzymes." Thesis, Stellenbosch : Stellenbosch University, 2012. http://hdl.handle.net/10019.1/19968.

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Thesis (MSc)--Stellenbosch University, 2012.<br>ENGLISH ABSTRACT: Biopolymers exhibit the required material properties to replace conventional, non-biodegradable, petroleum-based polymer products. They have a closed carbon cycle, making them carbon neutral and environmentally friendly. Biopolymers are produced from non-toxic substrates during in vivo enzymatic reactions. Biosynthesis of the most commercially important biopolymers is too complex to be reproduced in in vitro reactions. Identification of the genes responsible for their biosynthesis has been under investigation, with some pathways
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Lees, Emma E. "Preparation and characterisation of biocompatible semiconductor nanocrystals." Connect to thesis, 2009. http://repository.unimelb.edu.au/10187/7084.

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Semiconductor nanocrystals exhibit unique optical and physical properties that make them an attractive alternative to organic dyes for fluorescent bioapplications. Although significant advances have been made since their first reported use in biology a decade ago, it still remains a challenge to prepare high quality, biocompatible semiconductor nanocrystals.<br>In this thesis, studies are described with the aim to prepare robust, biocompatible semiconductor nanocrystals that exhibit each of the properties necessary for their implementation in biological applications. Two different approaches w
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Costa, Jessica. "Use and characterisation of free or immobilised enzymatic systems for the synthesis and functionalisation of novel materials." Doctoral thesis, Università di Siena, 2021. http://hdl.handle.net/11365/1127196.

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The work reported in this Ph.D. thesis is focused on the use and immobilisation of enzymes to produce new materials, which are important for biotechnological applications. The use of enzymes in industrial sectors is continuously increasing. Enzymes offer many advantages over traditional chemical processes. The research work of this thesis can be divided into two parts. The first part is focused on the immobilisation of laccase and chitinase. The main object of enzymatic immobilisation is to enhance the economics of biocatalytic processes. Enzymatic immobilisation allows the reuse of enzymes
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Pishbin, Fatemehsadat. "Development and characterisation of bioactive coatings based on biopolymer and bioactive glass obtained by electrochemical means." Thesis, Imperial College London, 2013. http://hdl.handle.net/10044/1/11591.

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In spite of their widespread application, metallic orthopaedic prosthesis failure still occur due to lack of sufficient bone-bonding and the incidence of post-surgery microbial infections. The goal of this research was to develop multifunctional composite polymer/bioactive glass coatings as a potential strategy to improve surface properties of metallic implants. Using this approach, the bioactive glass improves osseointegration and the polymer plays a dual role: firstly to improve mechanical properties and secondly as a carrier for the release of therapeutics at the implantation site. Electrop
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Ninan, Neethu. "Synthesis, characterisation and biological evaluation of tissue engineering scaffolds for wound healing." Lorient, 2013. http://www.theses.fr/2013LORIS306.

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Tissue engineering is a promising therapeutic approach that assembles cells, biomaterials, and micro-environmental factors to promote tissue repair and functional restoration. Despite many advances, tissue engineers still face significant challenges in developing artifacts to promote dermal cell growth. Scaffolds are porous artifacts that serve as extracellular matrix but are able to create the microenvironment for the growth and differentiation of skin cells and enhanced tissue development. The emerging and promising next generation of engineered tissues is relying on producing biopolymeric s
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Zhang, Lin. "Isolation and characterisation of biopolymers from anti-cancer medicinal herbs." Thesis, 2012. http://handle.uws.edu.au:8081/1959.7/564846.

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In recent years, medicinal plants have become popular for the treatment of several diseases due to their efficacy and cost effectiveness. Plant derived therapeutic agents are increasingly sought out as pharmaceuticals for the treatment of life-threatening illnesses. Important contributions have already been made in the recent years to the drug market by the compounds isolated from natural sources or from their derivatives. There is no doubt that, novel lifesaving drugs could be discovered by a systematic evaluation of ethno medicinal information using modern scientific tools. This thesis attem
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Hagbjer, Elizabeth. "Characterisation of Solubility and Aggregation of Alkaline Extracted Plant Cell Wall Biopolymers." Thesis, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-59110.

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Up to 30% by mass of plant cell walls are comprised of hemicelluloses. The remainder is comprised of cellulose, lignin and extractives. Potential economic uses of hemicellulose include hydrogels, fibre additives in pulp mill paper-making and as a substrate for fermentation processes. Development of a fermentation process with sugars from hemicellulose has become of increasing interest due to their potential as a feedstock for fermentation-based liquid fuels and other bio-based chemicals. These can be incorporated into existing processes, in particular alkaline chemical pulping mills, where up
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Negaresh, Ebrahim Chemical Sciences &amp Engineering Faculty of Engineering UNSW. "Particle and macromolecular fouling in submerged membrane." 2007. http://handle.unsw.edu.au/1959.4/40743.

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Particles and macromolecular components, including biopolymers (protein and carbohydrate), are viewed as the main foulants in the complex feed submerged membrane filtration systems such as membrane bioreactor (MBR). This work focused on two aspects of fouling in complex fluids: 1- Assessing fouling propensity and mechanisms for various model solutions. 2- Using of two specific solutions modelling biomass found in MBR for a better understanding of the fouling mechanisms in submerged MBR processes. Filtrations were carried out with 0.22 ??m PVDF hollow fibre membrane. Alginate was used as a mod
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Books on the topic "Biopolymers characterisation"

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Al-Assaf, Saphwan. Characterisation and radiation sensitivity of the biopolymer hylan. University of Salford, 1994.

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O'Brien, Paul, James Chapman, Harry Kroto, Fiona Regan, and Timothy Sullivan. Nanoparticles in Anti-Microbial Materials: Use and Characterisation. Royal Society of Chemistry, The, 2012.

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Nanoparticles in Anti-Microbial Materials: Use and Characterisation. Royal Society of Chemistry, The, 2012.

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Book chapters on the topic "Biopolymers characterisation"

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Rajalakshmi, T. Uma, and G. Alagumuthu. "A Facile Route for the Fabrication of Nanocompositie by Effective Impregnation Through the Biopolymer Matrix and Its Characterisation." In Proceedings of the International Conference on Nanomedicine (ICON-2019). Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-25135-2_14.

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Ray Foster, Leslie John. "PEGylation and BioPEGylation of Polyhydroxyalkanoates: Synthesis, Characterisation and Applications." In Biopolymers. Sciyo, 2010. http://dx.doi.org/10.5772/10265.

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Richardson, Robert K., and Stefan Kasapis. "Rheological methods in the characterisation of food biopolymers." In Developments in Food Science. Elsevier, 1998. http://dx.doi.org/10.1016/s0167-4501(98)80006-x.

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Ramesh, M. "Polysaccharide-Fibrous Clay Bionanocomposites and their Applications." In Advanced Applications of Micro and Nano Clay. Materials Research Forum LLC, 2022. http://dx.doi.org/10.21741/9781644901915-1.

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Bionanocomposites are multifunctional materials, which contain biological origin and particles, have nanometer-scale dimensions (1–100 nm) and can be employed in a vast range of applications in fields like tissue engineering, electronic appliances, biosensors, regenerative medicine, drug delivery systems and food packaging due to their remarkable advantage of exhibiting biocompatibility, antibacterial activity, and biodegradability. To develop naturally biodegradable materials like bionanocomposites, several biopolymers are employed in recent years. Polysaccharides are made up of sugar molecul
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Conference papers on the topic "Biopolymers characterisation"

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Sandoval, Neyder A., Edwin A. Murillo, and Sophia A. Tsipas. "Evaluation Of Biopolymers To Produce Metal Or Metal-Ceramic Feedstocks For Eco-Sustainable Composite Extrusion Modelling." In Euro Powder Metallurgy 2024 Congress & Exhibition. EPMA, 2024. http://dx.doi.org/10.59499/ep246282804.

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Sinter-based additive manufacturing of metallic materials offers advantages in terms of design and efficiency but poses environmental concerns due to the use of chemicals and the generation of pollutant gases during the elimination of binders which are harmful to the environment. To improve this problem, the study of biopolymeric binders derived from renewable sources is proposed. This work explores composite extrusion modelling of metallic or metal-ceramic alloys using biopolymers to produce environmentally friendly feedstocks. Comprehensive evaluation of biopolymer blends based on poly lacti
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Pesce, Cecilia, Giovanni Pesce, Marco Molinari, and Alan Richardson. "Customising Microstructural and Mineralogical Characteristics of Hydrated Lime Using Biopolymers." In 4th International Conference on Bio-Based Building Materials. Trans Tech Publications Ltd, 2022. http://dx.doi.org/10.4028/www.scientific.net/cta.1.353.

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The study of lime-based systems is vital to the design of new sustainable building materials. Air lime (calcium hydroxide, Ca (OH)2) is a binder that has attracted considerable attention for its ability to capture CO2 from the atmosphere, its low-cost and low-energy production process. Furthermore, Ca (OH)2 is an important phase of hydrated Portland cements, and lime-based mortars have shown high elasticity and the ability of self-healing. The performance of lime-based building materials can be enhanced by the addition of organic compounds that can modify the mineralogy and microstructure of C
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