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Author: Luigi Mondello
Publisher: John Wiley & Sons
ISBN: 9781119069645
Category : Science
Languages : en
Pages : 0
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Book Description
Advanced Component Identification in Complex Mixtures Essential oils are mixtures consisting of monoterpene andsesquiterpene hydrocarbons, their oxygenated derivatives, andaliphatic oxygenated compounds. The difficulties that arise in theGC-MS peak identification of these complex samples is due to thefact that many terpenes have identical mass spectra. This is aconsequence of similarities both in the initial molecule, or in thefragmentation patterns and rearrangements after ionization. Hence,MS identification of these compounds should always be accompaniedby retention time information that may support the MS librarysearch results. This innovative MS library for natural and synthetic products(essential oils, perfumes, etc.) makes the identification ofunknown compounds in complex mixtures easier, faster and morereliable. The use of chromatographic information, such as LinearRetention Index (LRI), can be used to filter MS results, enablingthe more reliable peak assignment of components in complexmixtures. Mass spectra, relative to standard and well-known simple matrixcomponents, were obtained and recorded through GC-MSseparation/identification. Furthermore, traditional informationrelative to each component (CAS number, common name, CAS name,molecular weight, compound formula, chemical class) plus linearretention index values are entered. Flavors and Fragrances of Natural and Synthetic Compounds,3rd edition contains >3000 mass spectra, LRI retentiondata, calculated Kovats RI, and searchable chemical structures ofcompounds of interest for the flavors and fragrances industry.Prepared by the Prof. Luigi Mondello under rigorous measurementconditions, the mass spectral library contains compounds central toflavor and fragrance research. What's on the disc: 1. FFNSC 3 in MS Search (Agilent, Bruker, Leco, JEOL, , Agilent .L(Chemstation, MassHunter), PerkinElmer Turbomass, Waters MassLynx,ACD ND9, and Cromatoplus 2. 30-Day trial version of Cromatoplus software
Author: Luigi Mondello
Publisher: John Wiley & Sons
ISBN: 9781119069645
Category : Science
Languages : en
Pages : 0
Get Book Here
Book Description
Advanced Component Identification in Complex Mixtures Essential oils are mixtures consisting of monoterpene andsesquiterpene hydrocarbons, their oxygenated derivatives, andaliphatic oxygenated compounds. The difficulties that arise in theGC-MS peak identification of these complex samples is due to thefact that many terpenes have identical mass spectra. This is aconsequence of similarities both in the initial molecule, or in thefragmentation patterns and rearrangements after ionization. Hence,MS identification of these compounds should always be accompaniedby retention time information that may support the MS librarysearch results. This innovative MS library for natural and synthetic products(essential oils, perfumes, etc.) makes the identification ofunknown compounds in complex mixtures easier, faster and morereliable. The use of chromatographic information, such as LinearRetention Index (LRI), can be used to filter MS results, enablingthe more reliable peak assignment of components in complexmixtures. Mass spectra, relative to standard and well-known simple matrixcomponents, were obtained and recorded through GC-MSseparation/identification. Furthermore, traditional informationrelative to each component (CAS number, common name, CAS name,molecular weight, compound formula, chemical class) plus linearretention index values are entered. Flavors and Fragrances of Natural and Synthetic Compounds,3rd edition contains >3000 mass spectra, LRI retentiondata, calculated Kovats RI, and searchable chemical structures ofcompounds of interest for the flavors and fragrances industry.Prepared by the Prof. Luigi Mondello under rigorous measurementconditions, the mass spectral library contains compounds central toflavor and fragrance research. What's on the disc: 1. FFNSC 3 in MS Search (Agilent, Bruker, Leco, JEOL, , Agilent .L(Chemstation, MassHunter), PerkinElmer Turbomass, Waters MassLynx,ACD ND9, and Cromatoplus 2. 30-Day trial version of Cromatoplus software
Author: A. D. Kinghorn
Publisher: Springer
ISBN: 3319052756
Category : Science
Languages : en
Pages : 602
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Book Description
The volumes of this classic series, now referred to simply as "Zechmeister" after its founder, L. Zechmeister, have appeared under the Springer Imprint ever since the series' inauguration in 1938. It is therefore not really surprising to find out that the list of contributing authors, who were awarded a Nobel Prize, is quite long: Kurt Alder, Derek H.R. Barton, George Wells Beadle, Dorothy Crowfoot-Hodgkin, Otto Diels, Hans von Euler-Chelpin, Paul Karrer, Luis Federico Leloir, Linus Pauling, Vladimir Prelog, with Walter Norman Haworth and Adolf F.J. Butenandt serving as members of the editorial board. The volumes contain contributions on various topics related to the origin, distribution, chemistry, synthesis, biochemistry, function or use of various classes of naturally occurring substances ranging from small molecules to biopolymers. Each contribution is written by a recognized authority in his field and provides a comprehensive and up-to-date review of the topic in question. Addressed to biologists, technologists and chemists alike, the series can be used by the expert as a source of information and literature citations and by the non-expert as a means of orientation in a rapidly developing discipline.
Author: Ben Blount
Publisher: Frontiers Media SA
ISBN: 2889768651
Category : Science
Languages : en
Pages : 286
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Book Description
Author: Andrea Büttner
Publisher: Springer
ISBN: 3319269321
Category : Technology & Engineering
Languages : en
Pages : 1155
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Book Description
The Springer Handbook of Odor is the definitive guide to all aspects related to the study of smell and their impact on human life. For the first time, this handbook aligns the senso-chemo-analytical characterization of everyday smells encountered by mankind, with the elucidation of perceptual, hedonic, behavioral and physiological responses of humans to such odors. From birth onwards we learn to interact with our environment using our sense of smell. Moreover, evolutionary processes have engendered a multi-faceted communication that is supported – even dominated – by olfaction. This compilation examines the responses of humans to odors at different stages of life, thereby building a foundation for a widely overseen area of research with broader ramifications for human life. The expert international authors and editor align aspects, concepts, methodologies and perspectives from a broad range of different disciplines related to the science of smell. These include chemistry, physiology, psychology, material sciences, technology but also disciplines related to linguistics, culture, art and design. This handbook, edited by an internationally renowned aroma scientist with the support of an outstanding team of over 60 authors, is an authoritative reference for researchers in the field of odors both in academia and in industry and is also a useful reference for newcomers to the area.
Author: O. David Sparkman
Publisher: Academic Press
ISBN: 0080920152
Category : Science
Languages : en
Pages : 633
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Book Description
The second edition of Gas Chromatography and Mass Spectrometry: A Practical Guide follows the highly successful first edition by F.G. Kitson, B.S. Larsen, and C.N. McEwen (1996), which was designed as an indispensible resource for GC/MS practitioners regardless of whether they are a novice or well experienced. The Fundamentals section has been extensively reworked from the original edition to give more depth of an understanding of the techniques and science involved with GC/MS. Even with this expansion, the original brevity and simple didactic style has been retained. Information on chromatographic peak deconvolution has been added along with a more in-depth understanding of the use of mass spectral databases in the identification of unknowns. Since the last edition, a number of advances in GC inlet systems and sample introduction techniques have occurred, and they are included in the new edition. Other updates include a discussion on fast GC and options for combining GC detectors with mass spectrometry. The section regarding GC Conditions, Derivatization, and Mass Spectral Interpretation of Specific Compound Types has the same number of compound types as the original edition, but the information in each section has been expanded to not only explain some of the spectra but to also explain why certain fragmentations take place. The number of Appendices has been increased from 12 to 17. The Appendix on Atomic Masses and Isotope Abundances has been expanded to provide tools to aid in determination of elemental composition from isotope peak intensity ratios. An appendix with examples on "Steps to follow in the determination of elemental compositions based on isotope peak intensities" has been added. Appendices on whether to use GC/MS or LC/MS, third-party software for use in data analysis, list of information required in reporting GC/MS data, X+1 and X+2 peak relative intensities based on the number of atoms of carbon in an ion, and list of available EI mass spectral databases have been added. Others such as the ones on derivatization, isotope peak patterns for ions with Cl and/or Br, terms used in GC and in mass spectrometry, and tips on setting up, maintaining and troubleshooting a GC/MS system have all been expanded and updated. - Covers the practical instruction necessary for successful operation of GC/MS equipment - Reviews the latest advances in instrumentation, ionization methods, and quantitation - Includes troubleshooting techniques and a variety of additional information useful for the GC/MS practitioner - A true benchtop reference - A guide to a basic understanding of the components of a Gas Chromatograph-Mass Spectrometer (GC-MS) - Quick References to data interpretation - Ready source for information on new analyses
Author: G¿nter Gauglitz
Publisher: John Wiley & Sons
ISBN: 3527321500
Category : Science
Languages : en
Pages : 2011
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Book Description
This second, thoroughly revised, updated and enlarged edition provides a straightforward introduction to spectroscopy, showing what it can do and how it does it, together with a clear, integrated and objective account of the wealth of information that may be derived from spectra. It also features new chapters on spectroscopy in nano-dimensions, nano-optics, and polymer analysis. Clearly structured into sixteen sections, it covers everything from spectroscopy in nanodimensions to medicinal applications, spanning a wide range of the electromagnetic spectrum and the physical processes involved, from nuclear phenomena to molecular rotation processes. In addition, data tables provide a comparison of different methods in a standardized form, allowing readers to save valuable time in the decision process by avoiding wrong turns, and also help in selecting the instrumentation and performing the experiments. These four volumes are a must-have companion for daily use in every lab.
Author: Santiago Benito
Publisher: MDPI
ISBN: 3039289470
Category : Science
Languages : en
Pages : 220
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Book Description
During the last few years, industrial fermentation technologies have advanced in order to improve the quality of the final product. Some examples of those modern technologies are the biotechnology developments of microbial materials, such as Saccharomyces and non-Saccharomyces yeasts or lactic bacteria from different genera. Other technologies are related to the use of additives and adjuvants, such as nutrients, enzymes, fining agents, or preservatives and their management, which directly influence the quality and reduce the risks in final fermentation products. Other technologies are based on the management of thermal treatments, filtrations, pressure applications, ultrasounds, UV, and so on, which have also led to improvements in fermentation quality in recent years. The aim of the issue is to study new technologies able to improve the quality parameters of fermentation products, such as aroma, color, turbidity, acidity, or any other parameters related to improving sensory perception by the consumers. Food safety parameters are also included.
Author: D.L.B. Wetzel
Publisher: Elsevier
ISBN: 0080534759
Category : Technology & Engineering
Languages : en
Pages : 644
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Book Description
Advances in instrumentation and applied instrumental analysis methods have allowed scientists concerned with food and beverage quality, labeling, compliance, and safety to meet ever increasing analytical demands. Texts dealing with instrumental analysis alone are usually organized by the techniques without regard to applications. The biannual review issue of Analytical Chemistry under the topic of Food Analysis is organized by the analyte such as N and protein, carbohydrate, inorganics, enzymes, flavor and odor, color, lipids, and vitamins. Under 'flavor and odor' the subdivisions are not along the lines of the analyte but the matrix (e.g. wine, meat, dairy, fruit) in which the analyte is being determined. In "Instrumentation in Food and Beverage Analysis" the reader is referred to a list of 72 entries entitled "Instrumentation and Instrumental Techniques" among which molecular spectroscopy, chromatographic and other sophisticated separations in addition to hyphenated techniques such as GS-Mass spectrometry. A few of the entries appear under a chapter named for the technique. Most of the analytical techniques used for determination, separations and sample work prior to determination are treated in the context of an analytical method for a specific analyte in a particular food or beverage matrix with which the author has a professional familiarity, dedication, and authority. Since, in food analysis in particular, it is usually the food matrix that presents the research analytical chemist involved with method development the greatest challenge.
Author: Leo M.L. Nollet
Publisher: CRC Press
ISBN: 1498759394
Category : Science
Languages : en
Pages : 571
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Book Description
Green pesticides, also called ecological pesticides, are pesticides derived from organic sources which are considered environmentally friendly and are causing less harm to human and animal health and to habitats and the ecosystem. Essential oils based insecticides started have amazing features. This book gives a full spectrum of the whole range of essential oil based pesticides that may be used in pest control. It discusses the uses and limitations, including the recent advances in this area. It describes the metabolism and mode of action, and provides the present status of essential oil based pesticide residues in foodstuffs, soil and water.
Author: Colin Poole
Publisher: Elsevier
ISBN: 0123855403
Category : Science
Languages : en
Pages : 754
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Book Description
A single source of authoritative information on all aspects of the practice of modern gas chromatography, from theory, to methods, to selected applications. It also provides access to core data for practical work, comparison of results, and decision making and facilitates the search for sources in related areas of study.
