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Journal articles on the topic 'Biopolymers – Analysis'

Author: Grafiati

Published: 4 June 2021

Last updated: 29 January 2023

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1

Ramadhan, Romal, Muslim Abdurahman, and Falan Srisuriyachai. "Sensitivity Analysis Comparisson of Synthetic Polymer and Biopolymer using Reservoir Simulation." Scientific Contributions Oil and Gas 43, no. 3 (2020): 143–52. http://dx.doi.org/10.29017/scog.43.3.516.

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With a simultaneous increasing demand for oil and large decreases worldwide in newly discovered oil reserves in the past few decades, much attention has been paid to more effi cient production approaches such as enhanced-oil-recovery (EOR) methods for developing oil and gas from existing reservoirs (Li et al., 2014). Basically, there are two types of polymers; biopolymers and synthetic polymers (Cenk et al., 2017). Method used for this study is reservoir simulation by Computer Modeling Group (CMG) STARS simulator. The study concerns to investigate and analyze the polymer sensitivity on two dif

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Aslam Khan, Muhammad Umar, Saiful Izwan Abd Razak, Wafa Shamsan Al Arjan, et al. "Recent Advances in Biopolymeric Composite Materials for Tissue Engineering and Regenerative Medicines: A Review." Molecules 26, no. 3 (2021): 619. http://dx.doi.org/10.3390/molecules26030619.

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The polymeric composite material with desirable features can be gained by selecting suitable biopolymers with selected additives to get polymer-filler interaction. Several parameters can be modified according to the design requirements, such as chemical structure, degradation kinetics, and biopolymer composites’ mechanical properties. The interfacial interactions between the biopolymer and the nanofiller have substantial control over biopolymer composites’ mechanical characteristics. This review focuses on different applications of biopolymeric composites in controlled drug release, tissue eng

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Zupančič, Gregor Drago, Anamarija Lončar, Sandra Budžaki, and Mario Panjičko. "Biopolymers Produced by Treating Waste Brewer’s Yeast with Active Sludge Bacteria: The Qualitative Analysis and Evaluation of the Potential for 3D Printing." Sustainability 14, no. 15 (2022): 9365. http://dx.doi.org/10.3390/su14159365.

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Biopolymers are a suitable alternative for the ongoing problem of plastic accumulation, even though commercialization is difficult, which is reflected in the price of the product. However, costs can be reduced if active sludge bacteria and cheap, accessible substrates such as waste brewer’s yeast are used. Waste brewer’s yeast is a rich source of carbon and nitrogen and is widespread as a substrate in various industries. Thus, the cultivation of active sludge bacteria was performed on waste brewers’ yeast to obtain biopolymers that can be used in 3D printing. FT-IR, TG, and DSC analyses of pro

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Soldo, Antonio, Victor Aguilar, and Marta Miletić. "Macroscopic Stress-Strain Response and Strain-Localization Behavior of Biopolymer-Treated Soil." Polymers 14, no. 5 (2022): 997. http://dx.doi.org/10.3390/polym14050997.

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The enhancement of soil engineering properties with biopolymers has been shown recently as a viable and environmentally benign alternative to cement and chemical stabilization. Interest in biopolymer-treated soil is evident from the upsurge of related research activities in the last five years, most of which have been experimental in nature. However, biopolymers have not yet found their way into engineering practice. One of the reasons for this may be the absence of computational models that would allow engineers to incorporate biopolymer-treated soil into their designs. Therefore, the main go

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Soldo, Antonio, and Marta Miletic. "Durability against Wetting-Drying Cycles of Sustainable Biopolymer-Treated Soil." Polymers 14, no. 19 (2022): 4247. http://dx.doi.org/10.3390/polym14194247.

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The world today is more oriented towards sustainable and environmental-friendly solutions in every field of science, technology, and engineering. Therefore, novel sustainable and eco-friendly approaches for soil improvement have also emerged. One of the effective, promising, and green solutions is the utilization of biopolymers. However, even though the biopolymers proved to be effective in enhancing the soil-mechanical properties, it is still unknown how they behave under real environmental conditions, such as fluctuating temperatures, moisture, plants, microorganisms, to name a few. The main

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Venkateshaiah, Abhilash, Vinod V. T. Padil, Malladi Nagalakshmaiah, Stanisław Waclawek, Miroslav Černík, and Rajender S. Varma. "Microscopic Techniques for the Analysis of Micro and Nanostructures of Biopolymers and Their Derivatives." Polymers 12, no. 3 (2020): 512. http://dx.doi.org/10.3390/polym12030512.

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Natural biopolymers, a class of materials extracted from renewable sources, is garnering interest due to growing concerns over environmental safety; biopolymers have the advantage of biocompatibility and biodegradability, an imperative requirement. The synthesis of nanoparticles and nanofibers from biopolymers provides a green platform relative to the conventional methods that use hazardous chemicals. However, it is challenging to characterize these nanoparticles and fibers due to the variation in size, shape, and morphology. In order to evaluate these properties, microscopic techniques such a

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Baidurah, Siti. "Methods of Analyses for Biodegradable Polymers: A Review." Polymers 14, no. 22 (2022): 4928. http://dx.doi.org/10.3390/polym14224928.

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Biodegradable polymers are materials that can decompose through the action of various environmental microorganisms, such as bacteria and fungi, to form water and carbon dioxide. The biodegradability characteristics have led to a growing demand for the accurate and precise determination of the degraded polymer composition. With the advancements in analytical product development, various analytical methods are available and touted as practical and preferable methods of bioanalytical techniques, which enable the understanding of the complex composition of biopolymers such as polyhydroxyalkanoates

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Hamzah, Amir. "The Characteristics and The Making of Biopolymer Film from Oil Palm Trunk Starch (Elaeis guineensis Jacq.) Using Sorbitol Plasticizer." Journal of Chemical Natural Resources 1, no. 2 (2019): 11–22. http://dx.doi.org/10.32734/jcnar.v1i2.1249.

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The research about of the biopolymers film from oil palm trunk starch had been done. Biopolymers film made by mixing of oil palm trunk starch (Elaeis guineensis Jacq.) and plasticizer sorbitol with the variation was 2:0,8 ; 2:1,0 ;2:1,2 (g/mL), then the film was molded on acrylic plate and dried in an oven at 40°C for 24 hours. The results of the film characterization show that the best variation of biopolymers on comparison 2:0,8 (g/mL) with the value of tensile strength was 4,26 MPa, percentage of elongation was 1,87 %, and film thickness was 0,16 mm, then it can be used as reference for add

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9

Chen, Huanwen, David Touboul, Matthias Conradin Jecklin, Jian Zheng, Mingbiao Luo, and Renato Zenobi. "Manipulation of Charge States of Biopolymer Ions by Atmospheric Pressure Ion/Molecule Reactions Implemented in an Extractive Electrospray Ionization Source." European Journal of Mass Spectrometry 13, no. 4 (2007): 273–79. http://dx.doi.org/10.1255/ejms.879.

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A home-made extractive electrospray ionization source is coupled to an linear quadrupole ion trap mass spectrometer to investigate ion/molecule reactions of biopolymers at ambient pressure. Multiply charged biopolymers such as peptides and proteins generated in an electrospray are easily reduced to a low charge state by the atmospheric pressure ion/molecule reactions occurring between the multiply charged ions and a strong basic reagent sprayed in neutral form into the electrospray plume. The charge state of the biopolymer ions can be manipulated by controlling the amount of the basic reagent.

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Mistretta, Maria Chiara, Luigi Botta, Rossella Arrigo, Francesco Leto, Giulio Malucelli, and Francesco Paolo La Mantia. "Bionanocomposite Blown Films: Insights on the Rheological and Mechanical Behavior." Polymers 13, no. 7 (2021): 1167. http://dx.doi.org/10.3390/polym13071167.

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In this work, bionanocomposites based on two different types of biopolymers belonging to the MaterBi® family and containing two kinds of modified nanoclays were compounded in a twin-screw extruder and then subjected to a film blowing process, aiming at obtaining sustainable films potentially suitable for packaging applications. The preliminary characterization of the extruded bionanocomposites allowed establishing some correlations between the obtained morphology and the material rheological and mechanical behavior. More specifically, the morphological analysis showed that, regardless of the t

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Morales-Jiménez, Mónica, Luisa Gouveia, Jorge Yáñez-Fernández, Roberto Castro-Muñoz, and Blanca Estela Barragán-Huerta. "Production, Preparation and Characterization of Microalgae-Based Biopolymer as a Potential Bioactive Film." Coatings 10, no. 2 (2020): 120. http://dx.doi.org/10.3390/coatings10020120.

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Six microalgae strains were screened according to their biomass productivity and polymer synthesis, showing biomass productivity between 0.14 and 0.68 g/(L·d) for a 21-day growth period. Extracellular biopolymers from the spent culture media of Nostoc sp. (No), Synechocystis sp. (Sy), and Porphyridium purpureum (Pp) was obtained, and the yields of the clean biopolymer were 323, 204, and 83 mg/L, respectively. The crude biopolymer was cleaned up using a solid-phase extraction technique. The emulsification index E24 values for the clean biopolymer were 77.5%, 68.8%, and 73.3% at 0.323, 0.083, an

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Kaddo, Maria. "Analysis of the possibility of using polylactide in production of building materials." E3S Web of Conferences 217 (2020): 01012. http://dx.doi.org/10.1051/e3sconf/202021701012.

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The article analyzes the features of the production, use and utilization of biodegradable biopolymers. The results of studies are presented, the purpose of which is to assess the combination of properties of polylactide for use in construction. The fundamental possibility of using a thermoplastic biopolymer based on lactide (lactic acid) for the production of building materials is considered. Comparative data on the results of studies of the physical and mechanical properties of materials based on polylactide are presented.

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Dara, Pavan Kumar, Mahadevan Raghavankutty, Karthik Deekonda, et al. "Synthesis of Biomaterial-Based Hydrogels Reinforced with Cellulose Nanocrystals for Biomedical Applications." International Journal of Polymer Science 2021 (September 7, 2021): 1–14. http://dx.doi.org/10.1155/2021/4865733.

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Cellulose nanocrystals (CNC) were prepared by formic acid hydrolysis and TEMPO- (2,2,6,6-tetramethyl-piperidine-1-oxyl-) mediated oxidation. The prepared CNCs were reinforced into biopolymers chitosan (CHI), alginate (ALG), and gelatin (GEL) to obtain “CNC-ALG-GEL” and “CNC-CHI-GEL” hydrogels. The synthesized hydrogels were characterized for physicochemical, thermal, and structural characterization using Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), thermal gravity analysis (TGA), and X-ray diffraction (XRD) analyses. Notably, the reinforcement of CNC has

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Cherednichenko, Kirill, Dmitry Kopitsyn, Svetlana Batasheva, and Rawil Fakhrullin. "Probing Antimicrobial Halloysite/Biopolymer Composites with Electron Microscopy: Advantages and Limitations." Polymers 13, no. 20 (2021): 3510. http://dx.doi.org/10.3390/polym13203510.

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Halloysite is a tubular clay nanomaterial of the kaolin group with a characteristic feature of oppositely charged outer and inner surfaces, allowing its selective spatial modification. The natural origin and specific properties of halloysite make it a potent material for inclusion in biopolymer composites with polysaccharides, nucleic acids and proteins. The applications of halloysite/biopolymer composites range from drug delivery and tissue engineering to food packaging and the creation of stable enzyme-based catalysts. Another important application field for the halloysite complexes with bio

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Ahn, Seongnoh, Kwangkuk Ahn, Changho Lee, Jun-Dae Lee, and Jongwon Jung. "Evaluation of Dynamic Properties and Ground-Response Analysis of Soil Reinforced with Cement and Biopolymer." Journal of the Korean Society of Hazard Mitigation 20, no. 5 (2020): 291–96. http://dx.doi.org/10.9798/kosham.2020.20.5.291.

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In Korea, earthquakes have continued to occur even after the occurrence of Gyeongju and Pohang earthquakes of 2016 and 2017, respectively, raising awareness of earthquakes. Because earthquakes cause damage to not only structures but also humans, it is essential to improve the seismic performance and design earthquake-resistant structures to minimize earthquake damages. If the seismic performance of a structure is improved through ground improvement and reinforcement, ground response analysis should be performed considering the dynamic properties of the site of the structure. In addition, cemen

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Aremu, Mujidat O., Mofoluwake M. Ishola, and Mohammad J. Taherzadeh. "Polyhydroxyalkanoates (PHAs) Production from Volatile Fatty Acids (VFAs) from Organic Wastes by Pseudomonas oleovorans." Fermentation 7, no. 4 (2021): 287. http://dx.doi.org/10.3390/fermentation7040287.

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This study aimed to investigate the production of polyhydroxyalkanoates (PHAs), a biodegradable polymer from organic wastes by Pseudomonas oleovorans. Volatile fatty acids (VFAs) from acidogenic fermentations of chicken manure (VFAs-CM) and potato peels (VFAs-PP), rich in organic matter majorly acetic (49.9%), butyric (15%) and propionic acids (11.1%) were utilized as substrates for microbial processes. During 72 h of cultivations, samples were withdrawn at intervals and analyzed for cell growth parameters, PHAs accumulation and polymeric properties. The highest biopolymer accumulation (0.39 g

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Hrnčiřík, Pavel. "Monitoring of Biopolymer Production Process Using Soft Sensors Based on Off-Gas Composition Analysis and Capacitance Measurement." Fermentation 7, no. 4 (2021): 318. http://dx.doi.org/10.3390/fermentation7040318.

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This paper focuses on the design of soft sensors for on-line monitoring of the biotechnological process of biopolymer production, in which biopolymers are accumulated in bacteria as an intracellular energy storage material. The proposed soft sensors for on-line estimation of the biopolymer concentration represent an interesting alternative to the traditional off-line analytical techniques of limited applicability for real-time process control. Due to the complexity of biochemical reactions, which make it difficult to create reasonably complex first-principle mathematical models, a data-driven

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18

Klishanets, E. T. "Analysis of existing applications of the biopolymer chitin and its derivatives." Vesnik of Yanka Kupala State University of Grodno. Series 6. Engineering Science 12, no. 1 (2022): 99–106. http://dx.doi.org/10.52275/2223-5396-2022-12-1-99-106.

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The introduction presents scientific data on the structure, chemical composition and properties of chitin, chitosan and the chitin-glucan complex. In recent years, special attention has been paid to the biopolymer chitin and its derivatives. Due to their unique properties: biocompatibility, biodegradability, non-toxicity, they have found application in more than 70 areas: medicine, ecology, food industry, agriculture. Sources for the production of chitin can be the shell of commercial crustaceans, the biomass of fungi, and the cuticle of insects. The main part describes the modern fields of ap

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Gasljevic, K., and E. F. Matthys. "Ship Drag Reduction by Microalgal Biopolymers: A Feasibility Analysis." Journal of Ship Research 51, no. 04 (2007): 326–37. http://dx.doi.org/10.5957/jsr.2007.51.4.326.

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We have investigated the feasibility of using high-molecular-weight polysaccharides produced by marine microalgae to reduce the drag on ships and therefore to be able to reduce the needed propulsion power and fuel costs or, alternatively, to increase the ship speed. Experimental and analytical studies were used to answer four critical questions:How suitable are the biopolymers for drag reduction on ships?What is the needed polymer consumption rate at a given level of drag reduction?What is the achievable polymer production rate that can be achieved by the microalgae?What are possible modes of

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Yahya, Esam Bashir, Fauziah Jummaat, A. A. Amirul, et al. "A Review on Revolutionary Natural Biopolymer-Based Aerogels for Antibacterial Delivery." Antibiotics 9, no. 10 (2020): 648. http://dx.doi.org/10.3390/antibiotics9100648.

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A biopolymer-based aerogel has been developed to become one of the most potentially utilized materials in different biomedical applications. The biopolymer-based aerogel has unique physical, chemical, and mechanical properties and these properties are used in tissue engineering, biosensing, diagnostic, medical implant and drug delivery applications. Biocompatible and non-toxic biopolymers such as chitosan, cellulose and alginates have been used to deliver antibiotics, plants extract, essential oils and metallic nanoparticles. Antibacterial aerogels have been used in superficial and chronic wou

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Kumar, Ravinder, Naresh Kumar, Vishnu D. Rajput, et al. "Advances in Biopolymeric Nanopesticides: A New Eco-Friendly/Eco-Protective Perspective in Precision Agriculture." Nanomaterials 12, no. 22 (2022): 3964. http://dx.doi.org/10.3390/nano12223964.

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Pesticides are essential to contemporary agriculture and are required to safeguard plants from hazardous pests, diseases, and weeds. In addition to harming the environment, overusing these pesticides causes pests to become resistant over time. Alternative methods and agrochemicals are therefore required to combat resistance. A potential solution to pesticide resistance and other issues may be found in nanotechnology. Due to their small size, high surface-area-to-volume ratio, and ability to offer novel crop protection techniques, nanoformulations, primarily biopolymer-based ones, can address s

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Surya, Indra, C. M. Hazwan, H. P. S. Abdul Khalil, et al. "Hydrophobicity and Biodegradability of Silane-Treated Nanocellulose in Biopolymer for High-Grade Packaging Applications." Polymers 14, no. 19 (2022): 4147. http://dx.doi.org/10.3390/polym14194147.

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The growing concern about pollution produced by plastic waste and the consequent environmental dangers has led to increased interest in replacing plastics with sustainable and biodegradable alternatives. Biopolymers such as seaweed have been examined for their film-forming characteristics to make edible films for packaging applications. This study aimed to prepare biopolymeric packaging films through a solvent-casting process using natural red seaweed (Kappaphycus alvarezii) and kenaf cellulose nanofiber (CNF), followed by film surface treatment using silane. The hydrophobic properties of the

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Teleky, Bernadette-Emőke, and Dan Cristian Vodnar. "Recent Advances in Biotechnological Itaconic Acid Production, and Application for a Sustainable Approach." Polymers 13, no. 20 (2021): 3574. http://dx.doi.org/10.3390/polym13203574.

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Intense research has been conducted to produce environmentally friendly biopolymers obtained from renewable feedstock to substitute fossil-based materials. This is an essential aspect for implementing the circular bioeconomy strategy, expressly declared by the European Commission in 2018 in terms of “repair, reuse, and recycling”. Competent carbon-neutral alternatives are renewable biomass waste for chemical element production, with proficient recyclability properties. Itaconic acid (IA) is a valuable platform chemical integrated into the first 12 building block compounds the achievement of wh

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Kong, Dexu, and Lee D. Wilson. "Uptake of Methylene Blue from Aqueous Solution by Pectin–Chitosan Binary Composites." Journal of Composites Science 4, no. 3 (2020): 95. http://dx.doi.org/10.3390/jcs4030095.

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To address the need to develop improved hybrid biopolymer composites, we report on the preparation of composites that contain chitosan and pectin biopolymers with tunable adsorption properties. Binary biopolymer composites were prepared at variable pectin–chitosan composition in a solvent directed synthesis, dimethyl sulfoxide (DMSO) versus water. The materials were characterized using complementary methods (infrared spectroscopy, thermal gravimetric analysis, pH at the point-of-zero charge, and dye-based adsorption isotherms). Pectin and chitosan composites prepared in DMSO yielded a covalent

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Sikorska, W., M. Zięba, M. Musioł, et al. "Forensic Engineering of Advanced Polymeric Materials—Part VII: Degradation of Biopolymer Welded Joints." Polymers 12, no. 5 (2020): 1167. http://dx.doi.org/10.3390/polym12051167.

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Welding technology may be considered as a promising processing method for the formation of packaging products from biopolymers. However, the welding processes used can change the properties of the polymer materials, especially in the region of the weld. In this contribution, the impact of the welding process on the structure and properties of biopolymer welds and their ability to undergo hydrolytic degradation will be discussed. Samples for the study were made from polylactide (PLA) and poly(3-hydroxyalkanoate) (PHA) biopolymers which were welded using two methods: ultrasonic and heated tool w

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Shutilin, Y. F. "About molecular transformations of biopolymers." Proceedings of the Voronezh State University of Engineering Technologies 83, no. 4 (2021): 238–45. http://dx.doi.org/10.20914/2310-1202-2021-4-238-245.

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Almost no attention is paid to molecular processes in the body in the human sciences, the efficiency of metabolism, temperature, fatigue and relaxation, stretching and rupture of tissue cells, their healing, symptoms of diseases, etc. are discussed. about a human. This is due to insufficient training of physicians, biologists, epidemiologists, and gerontologists in the field of physical chemistry of polymers, although they are interested in a biopolymer object - a person. The basis of his body is proteins (polypeptides) and polynucleotides, DNA, their genes and turns. The paper deals with chan

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Acharya, Raju, Aravind Pedarla, Tejo V. Bheemasetti, and Anand J. Puppala. "Assessment of Guar Gum Biopolymer Treatment toward Mitigation of Desiccation Cracking on Slopes Built with Expansive Soils." Transportation Research Record: Journal of the Transportation Research Board 2657, no. 1 (2017): 78–88. http://dx.doi.org/10.3141/2657-09.

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Expansive soil embankments are prone to shallow slope failures caused by associated swell–shrink movements. Previous studies have confirmed that seasonal changes and corresponding volumetric changes are responsible for desiccation cracking, which is a major factor behind shallow slope failures of highway embankments. For the past few years, soil stabilization proved to be an effective way to mitigate the swell–shrink property of expansive clays. The current study addresses the feasibility of guar gum biopolymer in mitigating the swell–shrink behavior of clays and in turn making it possible to

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Gumowska, Aneta, Eduardo Robles, and Grzegorz Kowaluk. "Evaluation of Functional Features of Lignocellulosic Particle Composites Containing Biopolymer Binders." Materials 14, no. 24 (2021): 7718. http://dx.doi.org/10.3390/ma14247718.

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In this research, the assessment of the impact of natural biopolymer binders on selected mechanical and physical properties of lignocellulosic composites manufactured with different resination (12%, 15%, 20%). Different mechanical and physical properties were determined: modulus of rupture, modulus of elasticity, internal bonding strength, thickness swelling, water absorption, contact angle, and density profile. Moreover, thermal properties such as thermogravimetric analysis and differential scanning calorimetry were studied for the polymers. The results showed significant improvement of chara

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Ryou, Jae-Eun, and Jongwon Jung. "Analysis of Biopolymer Solution Injectability Based on Pore Size Distribution and Injection Pressure Using Pore Network Model." Journal of the Korean Society of Hazard Mitigation 22, no. 6 (2022): 219–27. http://dx.doi.org/10.9798/kosham.2022.22.6.219.

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Biopolymers used for ecofriendly ground improvement lead to various effects, such as strength increase, hydraulic conductivity reduction, and vegetation enhancement. However, related studies evaluate the mechanical performance of a biopolymer-stabilized soil by simple mixing of the biopolymer and the soil. In this study, the injection performance of a biopolymer solution was evaluated by pore network modeling based on the pore size distribution and the injection pressure. The developed pore network model applies the power law behavior to a modified Hagen-Poiseuille equation to consider the rhe

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Quigley, Wes W. C., and Norman J. Dovichi. "Capillary Electrophoresis for the Analysis of Biopolymers." Analytical Chemistry 76, no. 16 (2004): 4645–58. http://dx.doi.org/10.1021/ac040100d.

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Krylov, Sergey N., and Norman J. Dovichi. "Capillary Electrophoresis for the Analysis of Biopolymers." Analytical Chemistry 72, no. 12 (2000): 111–28. http://dx.doi.org/10.1021/a1000014c.

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Hu, Shen, and Norman J. Dovichi. "Capillary Electrophoresis for the Analysis of Biopolymers." Analytical Chemistry 74, no. 12 (2002): 2833–50. http://dx.doi.org/10.1021/ac0202379.

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Wegrzynowska-Drzymalska, Katarzyna, Kinga Mylkie, Pawel Nowak, et al. "Dialdehyde Starch Nanocrystals as a Novel Cross-Linker for Biomaterials Able to Interact with Human Serum Proteins." International Journal of Molecular Sciences 23, no. 14 (2022): 7652. http://dx.doi.org/10.3390/ijms23147652.

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In recent years, new cross-linkers from renewable resources have been sought to replace toxic synthetic compounds of this type. One of the most popular synthetic cross-linking agents used for biomedical applications is glutaraldehyde. However, the unreacted cross-linker can be released from the materials and cause cytotoxic effects. In the present work, dialdehyde starch nanocrystals (NDASs) were obtained from this polysaccharide nanocrystal form as an alternative to commonly used cross-linking agents. Then, 5–15% NDASs were used for chemical cross-linking of native chitosan (CS), gelatin (Gel

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Alvarez Chavez, Brenda, Vijaya Raghavan, and Boris Tartakovsky. "A comparative analysis of biopolymer production by microbial and bioelectrochemical technologies." RSC Advances 12, no. 25 (2022): 16105–18. http://dx.doi.org/10.1039/d1ra08796g.

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Kwon, Tae-Hyuk, and Jonathan B. Ajo-Franklin. "High-frequency seismic response during permeability reduction due to biopolymer clogging in unconsolidated porous media." GEOPHYSICS 78, no. 6 (2013): EN117—EN127. http://dx.doi.org/10.1190/geo2012-0392.1.

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The accumulation of biopolymers in porous media, produced by stimulating either indigenous bacteria or artificially introduced microbes, readily blocks pore throats and can effectively reduce bulk permeability. Such a microbial clogging treatment can be used for selective plugging of permeable zones in reservoirs and is considered a potentially promising approach to enhance sweep efficiency for microbial enhanced oil recovery (MEOR). Monitoring in situ microbial growth, biopolymer formation, and permeability reduction in the reservoir is critical for successful application of this MEOR approac

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Amalia, Dewi, Bagus Guritno, and Geni Firuliadhim. "Pengaruh Biopolimer Pada Stabilitas Lereng Swelling soil." Borneo Engineering : Jurnal Teknik Sipil 5, no. 3 (2021): 307–16. http://dx.doi.org/10.35334/be.v5i3.2099.

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Many studies have begun to develop the concept of cracked soil. The results of research related to cracked soil are able to answer the irregularities that occur, such as the difference in the results of the stability analysis which is considered safe with the conventional bishop method, while the conditions in the field are landslides. Swelling soil is soil that is susceptible to changes in water content. This type of soil is very prone to cracking. To build infrastructure on the swelling soil type, an improvement must be made, one of which is by mixing the swelling soil with biopolymer. The r

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Aguirre Calvo, Tatiana, and Patricio Santagapita. "Physicochemical Characterization of Alginate Beads Containing Sugars and Biopolymers." Journal of Quality and Reliability Engineering 2016 (September 7, 2016): 1–7. http://dx.doi.org/10.1155/2016/9184039.

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Alginate hydrogels are suitable for the encapsulation of a great variety of biomolecules. Several alternatives to the conventional alginate formulation are being studied for a broad range of biotechnological applications; among them the addition of sugars and biopolymers arises as a good and economic strategy. Sugars (trehalose and β-cyclodextrin), a cationic biopolymer (chitosan), an anionic biopolymer (pectin), and neutral gums (Arabic, guar, espina corona, and vinal gums) provided different characteristics to the beads. Here we discuss the influence of beads composition on several physicoch

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Ni, Jing, Gang-Lai Hao, Jia-Qi Chen, Lei Ma, and Xue-Yu Geng. "The Optimisation Analysis of Sand-Clay Mixtures Stabilised with Xanthan Gum Biopolymers." Sustainability 13, no. 7 (2021): 3732. http://dx.doi.org/10.3390/su13073732.

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Sand–clay mixtures can be encountered in both natural soils (e.g., residual soils, clay deposits and clinosols) and artificial fills. The method of utilising biopolymers in ground improvement for sand–clay mixtures has emerged recently. However, a full understanding of the strengthening effect of biopolymer-treated sand–clay mixtures has not yet been achieved due to a limited number of relevant studies. In this study, xanthan gum (XG), as one of the eco-friendly biopolymers, was used to treat reconstituted sand–clay mixtures that had various compositions in related to clay (or sand) content an

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Gumowska, Aneta, Eduardo Robles, Arsene Bikoro, Anita Wronka, and Grzegorz Kowaluk. "Selected Properties of Bio-Based Layered Hybrid Composites with Biopolymer Blends for Structural Applications." Polymers 14, no. 20 (2022): 4393. http://dx.doi.org/10.3390/polym14204393.

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In this study, layered composites were produced with different biopolymer adhesive layers, including biopolymer polylactic acid (PLA), polycaprolactone (PCL), and biopolymer blends of PLA + polyhydroxybutyrate (PHB) (75:25 w/w ratio) with the addition of 25, 50% microcrystalline cellulose (MCC) and 3% triethyl Citrate (TEC) for these blends, which acted as binders and co-created the five layers in the elaborated composites. Modulus of rupture (MOR), modulus of elasticity (MOE), internal bonding strength (IB), density profile, differential scanning calorimetry (DSC), thermogravimetric analysis

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Tuszyński, Jack, Stéphanie Portet, and John Dixon. "Nonlinear assembly kinetics and mechanical properties of biopolymers." Nonlinear Analysis: Theory, Methods & Applications 63, no. 5-7 (2005): 915–25. http://dx.doi.org/10.1016/j.na.2005.01.089.

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Amani, Fateme, Atefe Rezaei, Hajar Akbari, Cristian Dima, and Seid Mahdi Jafari. "Active Packaging Films Made by Complex Coacervation of Tragacanth Gum and Gelatin Loaded with Curcumin; Characterization and Antioxidant Activity." Foods 11, no. 20 (2022): 3168. http://dx.doi.org/10.3390/foods11203168.

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The development of biopolymer-based green packaging films has gained remarkable attention in recent years. In this study, curcumin active films were prepared using different proportions of gelatin (GE) and a soluble fraction of tragacanth gum (SFTG) (1GE:1SFTG and 2GE:1SFTG) by complex coacervation. The various ratios of used biopolymers did not significantly impact the mechanical properties, thickness, and WVP of final films. However, biopolymers’ ratio impacted the moisture content, water solubility, swelling ratio, and release rate. Blending curcumin with biopolymers caused a reduction in t

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Arias-Nava, Elias H., Delia J. Valles-Rosales, and B. Patrick Sullivan. "Biopolymer Non-Parametric Analysis: A Degradation Study under Accelerated Destructive Tests." Polymers 15, no. 3 (2023): 620. http://dx.doi.org/10.3390/polym15030620.

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The degradation of biopolymers such as polylactic acid (PLA) has been studied for several years; however, the results regarding the mechanism of degradation are not completely understood yet. PLA is easily processed by traditional techniques including injection molding, blow molding, extrusion, and thermoforming; in this research, the extrusion and injection molding processes were used to produce PLA samples for accelerated destructive testing. The methodology employed consisted of carrying out material testing under the guidelines of several ASTM standards; this research hypothesized that the

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Cedillo, Gerardo, and Emilio Bucio. "Solid State NMR Analysis of Two Grafted Biopolymers." MRS Proceedings 1767 (2015): 113–18. http://dx.doi.org/10.1557/opl.2015.234.

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ABSTRACTA potential alternative to achieve smart materials for biomedical applications is the combination of natural and synthetic polymers. In order to understand the structure and properties of two γ-radiation grafted biopolymers, chitosan-g-poly(N-isopropylacrylamide) (CS/PNIPAAm) and cotton-g-2-(dimethylamino) ethyl methacrylate (CG-DMAEMA) were analyzed by solid state nuclear magnetic resonance (SSNMR) 13C-CPMAS at different contact times (tCP). The use of different tCP in this grafted biopolymers showed that chemical shifting, broadening, size and symmetry of the some signals, gives impo

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Comoglio, Federico, and Maurizio Rinaldi. "Rknots: topological analysis of knotted biopolymers with R." Bioinformatics 28, no. 10 (2012): 1400–1401. http://dx.doi.org/10.1093/bioinformatics/bts160.

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Knorre, D. G. "Physicochemical Biology: Conquered Boundaries and New Horizons." Acta Naturae 4, no. 2 (2012): 36–43. http://dx.doi.org/10.32607/20758251-2012-4-2-36-43.

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In this paper, we shall consider the main evolutionary stages that occurred within the field of physicochemical biology during the 20th century, following the determination of the tertiary structure of DNA by Watson and Crick and the subsequent successes in the X-ray structural analysis of biopolymers. The authors ideas on the pre-emptive problems and the methods used in physicochemical biology in the 21st century are also presented, including an investigation of the dynamics of biochemical processes, studies of the functions of unstructured proteins, as well as single-molecule investigations

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Knorre, D. G. "Physicochemical Biology: Conquered Boundaries and New Horizons." Acta Naturae 4, no. 2 (2012): 36–43. http://dx.doi.org/10.32607/actanaturae.10624.

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In this paper, we shall consider the main evolutionary stages that occurred within the field of physicochemical biology during the 20th century, following the determination of the tertiary structure of DNA by Watson and Crick and the subsequent successes in the X-ray structural analysis of biopolymers. The authors ideas on the pre-emptive problems and the methods used in physicochemical biology in the 21st century are also presented, including an investigation of the dynamics of biochemical processes, studies of the functions of unstructured proteins, as well as single-molecule investigations

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Chen, Chunhui, Zesen Peng, JiaYu Gu, Yaxiong Peng, Xiaoyang Huang, and Li Wu. "Exploring Environmentally Friendly Biopolymer Material Effect on Soil Tensile and Compressive Behavior." International Journal of Environmental Research and Public Health 17, no. 23 (2020): 9032. http://dx.doi.org/10.3390/ijerph17239032.

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The study of the high-performance of biopolymers and current eco-friendly have recently emerged. However, the micro-behavior and underlying mechanisms during the test are still unclear. In this study, we conducted experimental and numerical tests in parallel to investigate the impact of different xanthan gum biopolymer contents sand. Then, a numerical simulation of the direct tensile test under different tensile positions was carried out. The micro-characteristics of the biopolymer-treated sand were captured and analyzed by numerical simulations. The results indicate that the biopolymer can su

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Silva, Nadeeshika, and Dagnija Blumberga. "Why Biopolymer Packaging Materials are Better." Environmental and Climate Technologies 23, no. 2 (2019): 366–84. http://dx.doi.org/10.2478/rtuect-2019-0074.

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Abstract The upcoming packaging material trend is bio-polymeric materials since it has shown tremendous potential in practical scenarios. Even though there have been experiments performed regarding material developments, there is still no confirmation about how uncertain the developments will be. A few statistical approaches were carried out in this work to identify the role of biopolymers as a packaging material based on their thermo-mechanical and physical properties and potential compared to other packaging materials. To determine the potential of biopolymer, it is compared with other packa

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Mohan, TP, Kay Devchand, and K. Kanny. "Barrier and biodegradable properties of corn starch-derived biopolymer film filled with nanoclay fillers." Journal of Plastic Film & Sheeting 33, no. 3 (2016): 309–36. http://dx.doi.org/10.1177/8756087916682553.

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The objective of this work is to study the effect of nanoclay fillers on the biodegradation and barrier properties of corn starch polymer-based biofilm. Starch derived from corn plant source was used to prepare a biofilm by plasticization method. The barrier properties, namely, water absorption, moisture permeation, oxygen permeation and swelling of unfilled and nanoclay-filled corn starch biofilms were examined. The results indicate: ∼22% reduced water absorption, 40% reduced moisture uptake, 30% reduced oxygen permeation and 31% reduced swelling for 2–3 wt.% nanoclay-filled biofilm, when com

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Noworyta, Andrzej, Anna Trusek, and Maciej Wajsprych. "Membrane reactor for enzymatic depolymerization – a case study based on protein hydrolysis." Polish Journal of Chemical Technology 20, no. 4 (2018): 44–48. http://dx.doi.org/10.2478/pjct-2018-0053.

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Abstract The efficiency of enzymatic depolymerization in a membrane reactor was investigated. The model analysis was performed on bovine serum albumin hydrolysis reaction led by three different enzymes, for which kinetic equations have different forms. Comparing to a classic reactor, the reaction yield turns out to be distinctly higher for all types of kinetics. The effect arises from increasing (thanks to the proper selectivity of the applied membrane) the concentration of reagents in the reaction volume. The investigations indicated the importance of membrane selectivity election, residence

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