Protein Hydrogels from Lysozyme PDF Download
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Author: Hui Yan
Publisher:
ISBN:
Category :
Languages : en
Pages : 231
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Book Description
Author: Hui Yan
Publisher:
ISBN:
Category :
Languages : en
Pages : 231
Get Book Here
Book Description
Author: Hui Yan
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
Author: Md. Ibrahim H. Mondal
Publisher: Springer
ISBN: 9783319778297
Category : Technology & Engineering
Languages : en
Pages : 0
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Book Description
With the prospect of revolutionizing specific technologies, this book highlights the most exciting and impactful current research in the fields of cellulose-based superabsorbent hydrogels with their smart applications. The book assembles the newest synthetic routes, characterization methods, and applications in the emergent area. Leading experts in the field have contributed chapters representative of their most recent research results, shedding light on the enormous potential of this field and thoroughly presenting cellulose-based hydrogel functioning materials. The book is intended for the polymer chemists, academic and industrial scientists and engineers, pharmaceutical and biomedical scientists and agricultural engineers engaged in research and development on absorbency, absorbent products and superabsorbent hydrogels. It can also be supportive for undergraduate and graduate students.
Author: Andrew Stephen Yeh
Publisher:
ISBN:
Category :
Languages : en
Pages : 155
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Book Description
Membrane chromatography was investigated as an alternative method to packed-bed chromatography for protein recovery. The purification of lysozyme from egg white with Natrix adseptTM weak cation-exchange membranes was investigated under two different binding configurations: (1) a non-flow, static set-up with variable pH and sodium chloride (NaCl) concentrations during the binding and elution steps, and (2) a dynamic, cross-flow set-up with recycle at pH 7.5 and no NaCl addition during binding. The weak cation-exchange membrane consisted of a carboxylic acid-based, environmentally-responsive hydrogel layer bonded to a polymer matrix. Lysozyme was chosen to illustrate protein-membrane binding interactions due to its well-characterized nature and positive surface charge over a large pH range. For the static binding set-up, two sources of lysozyme were studied: pure lysozyme and egg whites treated with 60 % (v/v) ethanol (ESEW). Elution of bound protein was performed with 1 M NaCl under two pH strategies: binding and elution at a constant pH, and binding at pH 4.5 and variable elution pH. The highest maximum total protein binding capacity for pure lysozyme and ESEW was observed at pH 4.5 with no NaCl addition; however, poor total protein and lysozyme activity recovery were achieved during separation. As well, other egg white proteins, such as ovomucoid, were observed to bind to the membrane surface at pH 4.5, despite possessing similar charge polarity to the anionic membrane surface, indicating a non-electrostatic binding mechanism during operation below the membrane's pKa (4.7). Based on the conditions tested, the highest total protein and lysozyme activity recovery was demonstrated for the separation of lysozyme from ESEW at pH 7.5 binding and elution and no NaCl addition. In the dynamic binding study, very high pure lysozyme dynamic binding capacity was achieved at 10 % breakthrough (167.3 mg/ml membrane for a 0.35 mg/ml lysozyme solution). The lysozyme dynamic binding capacity was 2.2 times greater than the static binding capacity under similar conditions, significantly higher than published results for other cation-exchange membranes. The separation of lysozyme from four lysozyme sources was tested: pure lysozyme, ESEW, and aqueous egg whites with (ASEW) and without (AEW) 100 mM NaCl. The highest lysozyme activity recovery during separation and lysozyme purity was achieved from the ESEW feed. Lysozyme separation from aqueous egg whites was not as effective, likely due to a high concentration of negatively-charged protein impurities fouling the surface of the membrane. Competitive binding to the membrane limited lysozyme binding and reduced the purity of the recovery elution stream. The application of feed-side pressure during the separation of ESEW produced a high purity, high recovery lysozyme elution stream with a significant reduction in processing time; however, protein aggregates were observed to form on the membrane surface, limiting the applicability of high-pressure operation and reducing protein functionality in the elution stream. The weak cation-exchange membrane system was shown to successfully separate out a target protein from a low concentration protein mixture through electrostatic interactions, and may be further applied to other protein systems.
Author: Jagan Mohan Dodda
Publisher: Royal Society of Chemistry
ISBN: 183767308X
Category : Technology & Engineering
Languages : en
Pages : 436
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Book Description
Injectable smart hydrogels possess various properties that enable the development of new minimally invasive approaches to avoid problems associated with traditional implants. Researchers in academia and industry will learn the range of synthetic strategies used to produce this emerging class of biomaterials. Clinicians will also be inspired by the range of applications demonstrated to advance surgical procedures. The editors have brought together a global authorship to ensure that this book presents the state-of-the-art in materials engineering and therapeutics. Their knowledge and experience will help the reader develop better knowledge of the field and inspire new innovations, that cover a range of areas such as regenerative medicine, cancer therapy, and drug delivery.
Author: Nikolaos A. Peppas
Publisher: CRC Press
ISBN: 1000693864
Category : Medical
Languages : en
Pages : 191
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Book Description
First Published in 1986, this book offers a full, comprehensive guide to the application of hydrogels in medicine. Carefully compiled and filled with a vast repertoire of notes, diagrams, and references this book serves as a useful reference for students of medicine and other practitioners in their respective fields.
![Lysozyme Deposition Studies on Silicone Hydrogel Contact Lens Materials [electronic Resource] PDF](https://books.google.com/books/content/images/frontcover/CLD_jwEACAAJ?fife=w80-h100)
Author: Nagapatnam Subbaraman, Lakshman
Publisher: University of Waterloo
ISBN:
Category :
Languages : en
Pages :
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Book Description
Over 60 proteins have been detected in the tear film and among these lysozyme has attracted the greatest attention. Several techniques for elucidating the identity, quantity and conformation of lysozyme deposited on soft contact lenses have been developed. Lysozyme also deposits on the newly introduced silicone hydrogel (SH) lens materials, but in extremely low levels compared to conventional hydrogel lenses. Hence, a major analytical complication with the study of the SH contact lens materials relates to the minute quantity of deposited lysozyme. The first project of this thesis involved the development of a method whereby lysozyme mass extracted from SH lens materials would be preserved over time and would be compatible with an optimized Western blotting procedure. This methodological development was incorporated into a clinical study (CLENS-100® and Silicone Hydrogels - CLASH study) wherein the difference in the degree of total protein, the difference in lysozyme deposition and activity recovered from lotrafilcon A SH lens material when subjects used surfactant containing rewetting drops (CLENS-100®) versus control saline was investigated. The remaining experiments were in vitro experiments wherein the lenses were doped in artificial lysozyme solution containing l℗¿I-labeled lysozyme. These experiments were performed to gain insight into the kinetics of lysozyme deposition on SH lens materials and also the efficacy of a reagent in extracting lysozyme from SH lens materials. A protocol was developed whereby the percentage loss of lysozyme mass found on lotrafilcon A SH lenses was reduced from approximately 33% to
Author: Gabriele Sadowski
Publisher: Springer
ISBN: 3319016830
Category : Technology & Engineering
Languages : en
Pages : 275
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Book Description
This volume of Progress in Colloid and Polymer Science assembles original contributions and invited reviews from the priority research program "Intelligent Hydrogels", funded by the German Science Foundation DFG since 2006, with about 25 contributing research groups. In the center of interest of this program and the present book are responsive hydrogels, i.e. hydrophilic polymer or polyelectrolyte networks that are able to respond to environmental stimuli such as changes in temperature, pH, additive concentration or electrical field. The activities focus on different aspects: on hydrogel synthesis, on the modeling and simulation of thermophysical hydrogel properties, as well as on innovative new hydrogel applications as smart materials. The present book summarizes the highlights in the results of the priority program in original contributions and invited reviews.
Author: Haesun Park
Publisher: CRC Press
ISBN: 9781439892961
Category : Medical
Languages : en
Pages : 272
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Book Description
From the Authors' Preface The advances made in the area of controlled drug delivery during the last two decades are remarkable ....Of the many polymeric materials, biodegradable hydrogels present unique advantages and opportunities in the development of ...delivery devices....We have undertaken the challenge of putting together information relevant to biodegradable hydrogels in one place. This book covers the mechanisms of biodegradation, types of biodegradable hydrogels,chemical and physical gels, chemical and enzymatic degradation, and examples of biodegradable drug delivery systems.
Author: Susheel Kalia
Publisher: Woodhead Publishing
ISBN: 0323906559
Category : Technology & Engineering
Languages : en
Pages : 439
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Book Description
Protein-Based Biopolymers: From Source to Biomedical Applications provides an overview on the development and application of protein biopolymers in biomedicine. Protein polymers have garnered increasing focus in the development of biomedical materials, devices and therapeutics due to their intrinsic bioactivity, biocompatibility and biodegradability. This book comprehensively reviews the latest advances on the synthesis, characterization, properties and applications of protein-based biopolymers. Each chapter is dedicated to a single protein class, covering a broad range of proteins including silk, collagen, keratin, fibrin, and more. In addition, the book explores the biomedical potential of these polymers, from tissue engineering, to drug delivery and wound healing. This book offers a valuable resource for academics and researchers in the fields of materials science, biomedical engineering and R&D groups working in pharmaceutical and biomedical industries. Covers a range of protein-based biopolymers, including elastin, collagen, keratin, soy and more Guides the reader through the fabrication, characterization and properties of protein biopolymers Explores the biomedical potential of protein biopolymers, covering applications such as cancer therapy, tissue engineering and drug delivery
