Tag Archives: Ellagitannins:

Analysis of Antioxidant-Rich Phytochemicals

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Zhimin Xu and Luke R. Howar, "Analysis of Antioxidant-Rich Phytochemicals"
English | ISBN: 0813823919 | 2012 | 408 pages | PDF | 3 MB

Analysis of Antioxidant-Rich Phytochemicals
To quantify antioxidants in natural sources, the application of chromatography techniques with different detectors followed by skillful sample preparation is necessary. Analysis of Antioxidant-Rich Phytochemicals is the first book that specifically covers and summarizes the details of sample preparation procedures and methods developed to identify and quantify various types of natural antioxidants in foods. Focusing on the principle of quantification methods for natural antioxidants, the book reviews and summarizes current methods used in the determination of antioxidant-rich phytochemicals in different sources. Chapter by chapter, the distinguished team of authors describes the various methods used for analysis of the different antioxidant-rich phytochemicals – phenolic acids; carotenoids; anthocyanins; ellagitannins, flavonols and flavones; catechins and procyanidins; flavanones; stilbenes; phytosterols; and tocopherols and tocotrienols. Going beyond extensive reviews of the scientific literature, the expert contributors call on their accumulated experience in sample extraction and analysis to outline procedures, identify potential problems in dealing with different samples, and offer trouble-shooting tips for the analysis. Analysis of Antioxidant-Rich Phytochemicals covers the important food applications and health-promoting functions of the major antioxidant phytochemicals, presents general analysis principles and procedures, and systematically reviews and summarizes the various analytical methods necessary for each type of natural antioxidant in different food sources.
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Analysis of Antioxidant-Rich Phytochemicals

FREEDownload : Analysis of Antioxidant-Rich Phytochemicals

Zhimin Xu and Luke R. Howar, "Analysis of Antioxidant-Rich Phytochemicals"
English | ISBN: 0813823919 | 2012 | 408 pages | PDF | 3 MB

Analysis of Antioxidant-Rich Phytochemicals
To quantify antioxidants in natural sources, the application of chromatography techniques with different detectors followed by skillful sample preparation is necessary. Analysis of Antioxidant-Rich Phytochemicals is the first book that specifically covers and summarizes the details of sample preparation procedures and methods developed to identify and quantify various types of natural antioxidants in foods. Focusing on the principle of quantification methods for natural antioxidants, the book reviews and summarizes current methods used in the determination of antioxidant-rich phytochemicals in different sources. Chapter by chapter, the distinguished team of authors describes the various methods used for analysis of the different antioxidant-rich phytochemicals – phenolic acids; carotenoids; anthocyanins; ellagitannins, flavonols and flavones; catechins and procyanidins; flavanones; stilbenes; phytosterols; and tocopherols and tocotrienols. Going beyond extensive reviews of the scientific literature, the expert contributors call on their accumulated experience in sample extraction and analysis to outline procedures, identify potential problems in dealing with different samples, and offer trouble-shooting tips for the analysis. Analysis of Antioxidant-Rich Phytochemicals covers the important food applications and health-promoting functions of the major antioxidant phytochemicals, presents general analysis principles and procedures, and systematically reviews and summarizes the various analytical methods necessary for each type of natural antioxidant in different food sources.
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Chemistry and Biology of Ellagitannins: An Underestimated Class of Bioactive Plant Polyphenois

Stephane Quideau, "Chemistry and Biology of Ellagitannins: An Underestimated Class of Bioactive Plant Polyphenois"
2009 | ISBN-10: 9812797408 | 396 pages | PDF | 8,5 MB
This book is the first of its kind that focuses on the chemistry and biology of ellagitannins, a special class of naturally occurring polyphenols which have so far not received the attention they deserve. These polyphenolic substances are found in many plants, including numerous food sources. They not only exhibit unique structural features that fascinate most chemists who are aware of their existence, but also express remarkable biological activities that have yet to attract the interest of the pharmaceutical industry. This is surprising because ellagitannins have been identified as active principles in traditional Chinese medicines.

The principal aim of this book is to set the record straight. Most, if not all, worldwide experts in each aspect of the chemistry and biology of this underestimated class of natural products have contributed to this book. It covers topics such as their structural determination and natural occurrence; the most up-to-date knowledge of their biosynthesis; the current state of the art of their total chemical synthesis; their main physicochemical properties and principal biological activities; their presence in food and beverages; and their related health effects. All together, nine chapters compose this book whose content is placed into historical perspective in a yet inspiring preface written by one of the pioneers in modern polyphenol research, Professor Edwin Haslam. This book will be useful not only to scientists involved in natural product research, but also to lecturers and their students as a source of key references and/or a textbook.

Contents: Ellagitannins Renewed the Concept of Tannins; Structural Diversity and Antimicrobial Activities of Ellagitannins; Biosynthesis of Ellagitannins: Old Ideas and New Solutions; Physicochemical Properties and Biomimetic Reactions of Ellagitannins; Strategies for the Synthesis of Ellagitannins; Immunomodulatory Ellagitannin Chemistry; Bioavailability and Metabolism of Ellagic Acid and Ellagitannins; Sources and Health Effects of Dietary Ellagitannins; C-Glycosidic Ellagitannins and Their Influence on Wine Chemistry.

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