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Alkyl Polyglucosides

Author: Ivana Pantelic
Publisher: Woodhead Publishing
ISBN: 1908818778
Size: 41.31 MB
Format: PDF
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The on-going ‘green’ trend in the personal care industry coupled with global environmental concerns, place natural-origin, biodegradable and skin-friendly surfactants such as alkyl polyglucosides (APGs) in high demand. After successful use in cosmetics, sufficient data has been obtained to welcome some sugar emulsifiers into the field of drug dosage. Alkyl Polyglucosides presents a comprehensive compendium which guides a researcher from the APG-related preformulation stages to formulation processing, including the investigation of various APG-stabilized systems skin performance. This book introduces various APG representatives, their benefits in relation to certain conventional surfactants, physicochemical and interfacial properties, possible interaction with commonly used ingredients and diverse characterization techniques indispensable for the assessment of colloidal systems. The first chapter introduces alkyl polyglucosides, followed by chapters on their properties, behaviour, an overview of the patent protection mechanisms and guidelines for submitting patent applications. Finally, a conclusion surveys international patent applications involving APGs. Introduces the field of alkyl polyglucoside emulsifiers, listing all the contemporary and newly synthesized APG emulsifiers Provides detailed information on various aspects of APG-based structures Reveals potential of APG-stabilized vehicles as prospective delivery systems using several model drugs and cosmetic actives Includes an up-to-date review of research conducted in the field of APGs, facilitating future preformulation and formulation studies for researchers Offers a concise and practical compendium of characterization techniques

The European Polysaccharide Network Of Excellence Epnoe

Author: Patrick Navard
Publisher: Springer Science & Business Media
ISBN: 3709104211
Size: 31.17 MB
Format: PDF
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This book provides an essential overview of the science of polysaccharides. It both approaches polysaccharides as a polymer class and provides detailed descriptions of most major polysaccharides (cellulose, mannan, xylan, chitin-chitosan, cyclodextrines). Owing to the multidisciplinary character of the European Polysaccharide Network of Excellence (EPNOE), the book describes all main aspects of polysaccharide science and technology (biology, enzymology, physics, chemistry, materials science and processing). Notations and concepts follow a uniform format throughout the whole work in order to create a valuable reference book on the field of polysaccharide science. Owing to the major importance of industry in the EPNOE, concrete applications are also described in detail.

Recognition Receptors In Biosensors

Author: Mohammed Zourob
Publisher: Springer Science & Business Media
ISBN: 9781441909190
Size: 66.46 MB
Format: PDF, Docs
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Recognition receptors play a key role in the successful implementation of chemical and biosensors. Molecular recognition refers to non-covalent speci?c binding between molecules, one of which is typically a macromolecule or a molecular assembly, and the other is the target molecule (ligand or analyte). Biomolecular recognition is typically driven by many weak interactions such as hydrogen bo- ing, metal coordination, hydrophobic forces, van der Waals forces, pi-pi interactions and electrostatic interaction (due to permanent charges, dipoles, and quadrupoles) the polarization of charge distributions by the interaction partner leading to ind- tion and dispersion forces, and Pauli-exclusion-principle-derived inter-atomic repulsion, and a strong, “attractive” force arising largely from the entropy of the solvent and termed the hydrophobic effect. In recent years, there has been much progress in understanding the forces that drive the formation of such complexes, and how these forces are relate to the physical properties of the interacting molecules and their environment allows rational design of molecules and materials that interact in speci?c and desired ways. This book presents a signi?cant and up-to-date review of the various recognition elements, their immobilization, characterization techniques by a panel of dist- guished scientists. This work is a comprehensive approach to the recognition receptors area presenting a thorough knowledge of the subject and an effective integration of these receptors on sensor surfaces in order to appropriately convey the state-of the-art fundamentals and applications of the most innovative approaches.

Marine Enzymes For Biocatalysis

Author: Antonio Trincone
Publisher: Elsevier
ISBN: 1908818352
Size: 48.81 MB
Format: PDF, Docs
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Marine bioprospecting is a highly topical subject - in both applied and basic research - but, as yet, the marine ecosystem is a relatively unexplored source of natural bioactive substances with potential therapeutic activity. This book addresses the use of marine enzymes in biocatalysis through a series of chapters from leading scientists within academic and industrial fields. Biocatalytic processes can take advantage of the habitat-related properties of marine enzymes, such as salt tolerance, hyperthermostability, barophilicity, cold adaptivity, and so on, whilst also taking into consideration substrate specificity and affinity. These evolved properties are linked to the metabolic functions of the enzymes and to the ecological aspects of the natural source. New properties can also be discovered at the molecular level of catalysis, particularly concerning the stereochemical characteristics of products. Marine enzymes for biocatalysis initially examines the nature and level of interest in marine biological diversity, and outlines the fundamentals of biocatalysis. It goes on to detail sources of marine enzymes, and to analyse examples from both chemical and stereochemical viewpoints of catalysis, including microbial enzymes and animal or plant sources. The book goes on to explore the future potential of marine bioprospecting in biocatalysis. Compiles studies from leading scientists in a direct and accessible format. Includes practical descriptions of results, adding further details not often covered in formal articles Takes a molecular view which fully explains the enzymatic aspects of reactions, particularly regarding biocatalytic characteristics and descriptions of bioprocesses Selects examples of chemical and stereochemical aspects of enzymatic action with respect to known terrestrial counterparts

Microsized And Nanosized Carriers For Nonsteroidal Anti Inflammatory Drugs

Author: Bojan Čalija
Publisher: Academic Press
ISBN: 0128040807
Size: 58.60 MB
Format: PDF
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Microsized and Nanosized Carriers for Nonsteroidal Anti-Inflammatory Drugs: Formulation Challenges and Potential Benefits provides a unique and complete overview of novel formulation strategies for improvement of the delivery of NSAIDs via encapsulation in microsized and nanosized carriers composed of different materials of natural and synthetic origin. This book presents the latest research on advances and limitations of both microsized and nanosized drug carriers and NSAIDs before discussing the formulation aspects of these drug carriers that are intended for oral, dermal, and transdermal administration of NSAIDs. In addition, functionality of these materials as potential excipients for microsized and nanosized carriers is discussed and debated. Practical solutions for improving effectiveness of these drugs are included throughout the book, making this an important resource for graduate students, professors, and researchers in the pharmaceutical sciences. Covers a wide range of microsized and nanosized carriers in one resource, including particulate carriers (microparticles, nanoparticles, and zeolites) and the soft colloidal carriers, such as micro-emulsions and nano-emulsions Presents the reader with various formulation approaches dependent on the characteristics of the material, model drug, and desired route of administration Approaches are based on the latest research in the area and formulation strategies may have broader applications to the encapsulation of other active pharmaceutical ingredients

Surfactants From Renewable Resources

Author: Mikael Kjellin
Publisher: John Wiley & Sons
ISBN: 9780470686614
Size: 56.73 MB
Format: PDF, Mobi
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Most modern surfactants are readily biodegradable and exhibit low toxicity in the aquatic environment, the two criteria for green surfactants. However the majority are synthesised from petroleum, so over the past decade the detergent industry has turned its attention to developing greener routes to create these surfactants via renewable building blocks. Surfactants from Renewable Resources presents the latest research and commercial applications in the emerging field of sustainable surfactant chemistry, with emphasis on production technology, surface chemical properties, biodegradability, ecotoxicity, market trends, economic viability and life-cycle analysis. Reviewing traditional sources for renewable surfactants as well as recent advances, this text focuses on techniques with potential for large scale application. Topics covered include: Renewable hydrophobes from natural fatty acids and forest industry by-products Renewable hydrophiles from carbohydrates, amino acids and lactic acid New ways of making renewable building blocks; ethylene from renewable resources and complex mixtures from waste biomass Biosurfactants Surface active polymers This book is a valuable resource for industrial researchers in companies that produce and use surfactants, as well as academic researchers in surface and polymer chemistry, sustainable chemistry and chemical engineering.

Production Chemicals For The Oil And Gas Industry

Author: Malcolm A. Kelland
Publisher: CRC Press
ISBN: 9781420092974
Size: 19.68 MB
Format: PDF
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Modern production methods and environmental constraints demand chemical solutions. And as oilfields age, the need for chemicals to ensure steady production increases. Production Chemicals for the Oil and Gas Industry describes classes of production chemicals for use topside and downhole in the upstream oil and gas industry. It includes coverage of their mechanisms, deployment methods, and, where available, environmental properties. The first chapter gives a general overview of production chemistry issues, the factors that affect the choice of production chemicals, environmental regulations, suggestions for designing greener chemicals, and a brief overview of how to remove mercury and arsenic compounds from production fluids. Each of the remaining chapters begins with an introduction to a problem for which there is a production chemical. The author discusses chemical and non-chemical methods, and then thoroughly details the structural classes of production chemicals and how they can be tested. He includes information on the use of the chemical or technique in the field. References at the end of each chapter provide details on the synthesis, testing, theory, and application of each type of chemical. Unfortunately, crude oil production is characterized by variable production rates and unpredictable changes to the nature of the produced fluids. Unlike other texts that focus on how products perform in the field and how they are tested, this book focuses on the specific structures of a range of chemicals that are known to deliver the required or desired performance. It also provides an understanding of the issues involved in the use of chemicals and a range of production chemical additives that may be used to rectify issues that would not otherwise be fully resolved.

Chitosan

Author: Samuel P. Davis
Publisher: Nova Science Pub Incorporated
ISBN: 9781617288319
Size: 54.43 MB
Format: PDF, ePub
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Chitosan is a partially deacetylated derivative of chitin, a natural polysaccharide extracted from crustaceans, insects and certain fungi. Owing to its unique properties such as biodegradability, biocompatability, biological activity, and capacity of forming polyelectrolyte complex with anionic polyelectrolytes, chitosan has been widely applied in the food and cosmetics industry as well as the biomedical field in relation to tissue engineering, and the pharmaceutical industry relating to drug delivery. This book gathers current research from around the globe in the study of chitosan, including its manufacture, properties and usage across a broad spectrum.

Topical Absorption Of Dermatological Products

Author: Robert L. Bronaugh
Publisher: CRC Press
ISBN: 020390401X
Size: 68.90 MB
Format: PDF
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Contains current methods of analysis for new formulations of cosmetics, perfumes, creams, and lotions! With contributions from world-renowned experts in the field, Topical Absorption of Dermatological Products summarizes novel treatments for fungal nail infections emerging risk assessment procedures for sunscreen products real-time breath analysis and physiologically based pharmacokinetic modeling (PBPK) for the examination of chemically exposed tissues the use of micelles, mixed micelles, liposomes, and microemulsions as effective drug delivery systems modern therapeutic devices for the management of acute, subacute, and chronic steroid-responsive dermatoses Providing state-of-the-art strategies for the control of irritation and infection, Topical Absorption of Dermatological Products is an in-depth source for dermatologists, pharmacists, pharmacologists, cosmetic scientists, biochemists, toxicologists, public health officials, manufacturers of cosmetics and toiletries, and upper-level undergraduate and graduate students in these disciplines.

Sensory Evaluation

Author: Sarah E. Kemp
Publisher: John Wiley & Sons
ISBN: 1444360515
Size: 27.73 MB
Format: PDF
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This book is a practical guide to sensory evaluation methods and techniques in the food, cosmetic and household product industries. It explains the suitability of different testing methods for different situations and offers step-by-step instructions on how to perform the various types of tests. Covering a broad range of food and non-food product applications, the book is designed to be used as a practical reference in the testing environment; a training manual for new recruits into sensory science, and a course book for students undertaking industrial training or academic study.