American Chemical Society. Meeting

Headspace gas analysis is an analytical technique that has been successfully applied to food flavors for over 20 years but has experienced a resurgence of interest and innovation in recent years. In its truest form, headspace analysis represents the direct collection and analysis of the mixture of vapors in the space immediately above a food or beverage. The technique offers several advantages for workers interested in how a product smells and ultimately tastes. It offers the advantages of speed, simplicity, and, more importantly, represents the aroma profile a consumer is likely to experience just before consuming the product. Since only volatile components are collected, the sample is totally free of nonvolatile residues which commonly plague comparison liquid-liquid extracts of the same product. This is the first book devoted to headspace analysis in foods and beverages in more than 20 years. The publication contains chapters on the basic theory of headspace analysis, as well as the theory and application of newly developed headspace techniques, such as solid phase micro extraction, SPME and electronic noses. New concentrating and desorption techniques are described in addition to a raft of food applications including tomato and citrus juices, alcoholic beverages, baguettes, dairy products, lipids, grill flavoring, baked potato, and meat. Chapters on off-flavors as well as aroma-food matrix interactions are also included. "This is the bible of headspace analysis. If you are involved in, or planning on becoming involved, or want to learn more about, this incredible subject , then buy this book immediately!" – Aubrey Parsons, governing council member, International Union for Food Science and Technology

Theory and Practice ; [proceedings of the American Chemical Society, Held August 23 - 27, 1998, in Boston, Massachusetts]

Headspace Analysis of Foods and Flavors

American Chemical Society

Abstracts of Papers - American Chemical Society

Geoffrey A. Lindsay

Presents the most recent developments in second-order nonlinear optical polymers. Covers the most important technologies necessary to achieve commercially viable devices based on special polymeric materials with second-order nonlinear optical properties. Discusses important molecular design considerations, how to process the polymers into films, the stability of the films, their optical properties, and prototype devices that can be made from these films.

Polymers for Second-order Nonlinear Optics

Asim Esen

Offers an overview of the state-of-the-art and future research needs for β-glucosidases. Provides coverage of β-glucosidases from the entire spectrum of organisms, including humans and mammals, plants, insects, fungi, and bacteria. Includes chapters on the mechanism of catalysis by β-glucosidases, substrate specificity and physiological substrates of β-glucosidases, and cyanogenic β-glucosidases and glucosides from plants and insects. Reviews human β-glucosidases in relation to metabolism, foods and nutrition, and an inherited disorder. Also describes a model system using immobilized enzymes to convert cellulose to glucose.

Biochemistry and Molecular Biology

Beta -glucosidases

Mark E. Davis

Steven L. Suib

Discusses recent research and provides tutorial chapters on enhancing selectivity in catalysis through stereoselectivity, reaction pathway control, shape selectivity, and alloys and clusters. Presents an interdisciplinary approach to increasing selectivity in homogeneous and heterogeneous catalysis research. Includes an overview chapter that discusses the current state of the field and offers a perspective on future directions.

Selectivity in Catalysis

Richard Markuszewski

Environmental Concerns

Fossil Fuels Utilization

Shalaby W. Shalaby

The 28 papers discuss the synthesis, surface activation, and characterization of biomaterials; biological effects related to specific physiochemical factors; and synthetic bioactive chain molecules and polymers for the controlled transport of bioactive agents. An introductory section of topical reviews includes such topics as polymers in pharmaceutical products and interfacial biocompatibility. Addressed to potential designers and producers of biological and biomedical products. Annotation copyright by Book News, Inc., Portland, OR

Polymers of Biological and Biomedical Significance

Lignocellulose Biodegradation will be useful for chemists, biochemists, microbiologists, molecular biologists, and biochemical engineers. This book describes advances in lignocellulose biodegradation and application in biotechnology. It contains a combination of original research and review chapters. An overview chapter on lignocellulose biodegradation and applications in biotechnology focuses on recent research progress in the field. Lignocellulose Biodegradation includes sections on pretreatment, biodegradation, enzyme characterization and application.

Lignocellulose Biodegradation

Recent advances in the synthesis, stabilization, passivation and functionalization of a wide range of metal, metal oxide, semiconductor and other inorganic, polymer, organic, carbon and biological nanoparticles are reported in this book. Diverse shapes of nanoparticles are discussed here including spheres, cubes, nanorods, nanowires, nanotubes, nanocapsules, and nanopyramids. In the section on metals, one can find description of colloidal and wet chemical approaches to synthesize nanoparticles, methods to control number of functional groups and to attain aqueous dispersibility, impact of stabilizers on SERS activity, and ways to tune plasmon resonance via nanoparticle shapes. A time dependent density functional theory to evaluate adsorption properties of passivating ligands is also developed. The section on metal oxides describes surfactant aided formation and stabilization of iron oxide nanoparticles, the synthesis of titania nanotubes, and a hydrothermal condensation method to prepare nanowires of vanadium pentoxide. The section on semiconductor and inorganic nanoparticles includes details of the preparation of quantum dot surfactants as Langmuir Blodgett films, the synthesis of fluorinated organics silica composite nanoparticles, the kinetics of silver sulfide nanoparticle formation, the preparation of ultra bright silica nanoparticles and of nanoporous membranes from silica nanoparticle crystalline films, and a comprehensive view of microwave synthesis methods. The section on polymeric nanoparticles describes a ligand exchange strategy to synthesize polymer functionalized ferromagnetic nanoparticles, ROMP polymerization to produce polymer overlayers on nanoparticles, colloidal approaches to polysaccharide covered nanoparticles, and self assembly approach to stable polymer nanoparticles of controlled size. The final section includes a novel method to crystallize organic nanorods as branches on semiconductor nanoparticles, the use of tobacco mosaic virus as a template to prepare composite nanofibers, the synthesis of antibody functionalized gold nanorods of various aspect ratios for SPR based biosensing, and methods to stabilize aqueous dispersions of single wall carbon nanotubes using gamma cyclodextrins. In a fast growing field, this book offers both the beginning and advanced researchers, important details on creating nanomaterials and fruitful directions to follo

Synthesis, Stabilization, Passivation, and Functionalization

Nanoparticles

Walter D. Conway

Presents theoretical and practical aspects of the most recent advances in countercurrent chromatography, including pH-zone-refining countercurrent chromatography. Examines the use of countercurrent chromatography for the measurement of octanol/water partition coefficients. Describes separation of alkaloids and other pharmacologically active substances from plants. Discusses optimization of solvent systems and reviews the purification of peptides, lipoproteins, and commercial dyes. Includes information on multilayer coil and cross axis countercurrent chromatography and presents theoretical models for comparison and optimization.

Modern Countercurrent Chromatography

M. J. Bowden

Examines the ongoing electronic and photonic revolution and the fundamental, chemically related principles underlying these technologies. Provides reports on definitive advances in relatively mature technologies, and offers a better understanding of the new materials and processes needed to meet the demands of tomorrow's technology. Will serve as the stepping stone to further advances in polymer technology for chemists in both the industrial and academic sphere.

Electronics and Photonics

Polymers for High Technology

Book of Abstracts

Daniel Klempner

Provides a comprehensive review of interpenetrating polymer networks. Opens with four review chapters by important workers in the field--Sperling, Klempner, Utracki, and Lipatov- and continues with an international penetration of current research. Covers synthesis and structure, miscibility and morphology, structure-property relationships, transport and permeability, and functionalized triglyceride oils.

Interpenetrating Polymer Networks

"Developed from ... papers ... presented at the symposium on Polymer Performance Degradation and Materials Selection at the American Chemical Society (ACS) spring meeting held in March 2007 in Chicago, Illinois"--P. xi.

Polymer Degradation and Performance

John M. Hoffmann

Daniel C. Maser

Chemical Process Hazard Review

Gregory Robert James Thatcher

American Chemical Society. Division of Carbohydrate Chemistry

Discusses contemporary experimental and computational studies on the anomeric effect and related stereoelectronic effects and presents conflicting data and theories in this highly controversial area. Explores applications in carbohydrate chemistry, including enzymology, as well as organometallic chemistry and the chemistry of phosphates and sulfates. Includes examination of molecular modeling methods in compounds influenced by stereoelectronic effects.

The Anomeric Effect and Associated Stereoelectronic Effects

American Chemical Society. Division of Physical Chemistry

This book describes experimental and computer modeling techniques to characterize and design mesoscale (nanometer to micron) phenomena, which determine properties of many scientifically and industrially important fluid materials.

Mesoscale Phenomena in Fluid Systems

Constance Kies

Nutritional Bioavailability of Calcium

Stephen C. DeVito

Covers the design or redesign of chemicals with the specific intent of making them safe for people and the environment. Explains how commercially useful substances of low toxicity can be designed and developed through careful forethought and strategic molecular modification. Describes how existing industrial chemicals that are toxic can be redesigned to be less toxic but retain their usefulness. Discusses how to merge the disciplines of toxicology and chemistry to design new, less toxic commercial chemicals or redesign existing toxic commercial chemicals to result in less toxic substitutes. Provides researchers, developers, and manufacturers of industrial chemicals with a reference source for designing safer chemicals.

American Chemical Society. Meeting

Books

Your next favorite book is out there