Download or read book Experiments Directed Toward the Total Synthesis of Gibberellic Acid written by Shervin Esfandiari and published by . This book was released on 1970 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Total Synthesis of Gibberellic Acid written by Janice G. Smith and published by . This book was released on 1978 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Total Synthesis of Gibberellic Acid written by Rudolf Urech and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Total Synthesis of Gibberellic Acid written by Rick L. Danheiser and published by . This book was released on 1978 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Stevia written by A. Douglas Kinghorn and published by CRC Press. This book was released on 2001-11-29 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stevia rebaudiana is a remarkable South American plant that has become widely used in certain parts of the world as a natural sweetening agent and dietary supplement. Purified extracts of S. rebaudiana have been used as sweeteners and flavor enhancers in the food industry in Japan for over a quarter of a century, and have been found to be up to 300 times sweeter than sucrose. This comprehensive volume provides reviews on the botany, ethnobotany, and chemical constituents of the genus Stevia and examines the chemical synthesis of such compounds as steviol and stevioside. The perceived safety of these compounds has become somewhat controversial in recent years, and a thorough consideration of the pharmacology and biological activity is provided. The final two chapters offer some insight into the various applications of S. rebaudiana extracts and stevioside in Japan and Korea, the two countries with the most extensive use of these food additives at present. Containing numerous up to date references, the book will appeal to a wide segment of the scientific community at all levels, especially those in the fields of natural products, pharmacy, pharmacognosy, plant science, agriculture and the food and beverages industry.

Download or read book Comprehensive Dissertation Index 1861 1972 Chemistry written by Xerox University Microfilms and published by . This book was released on 1973 with total page 958 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Current Chemical Papers written by Chemical Society (Great Britain) and published by . This book was released on 1968 with total page 1764 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Directory of Graduate Research written by American Chemical Society. Committee on Professional Training and published by . This book was released on 1983 with total page 1294 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Effects of Ethylene on the Gibberellic Acid enhanced Synthesis and Release of Amylase by Aleurone Layers Isolated from Hordeum Vulgare Cv Himalaya written by Kenneth Charles Eastwell and published by . This book was released on 1981 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: For studies on effects of ethylene on amylase synthesis and release, methods were developed and extended to enable the incubation of isolated barley aleurone layers under controlled conditions. Particular attention was directed towards creating an atmosphere free of low molecular weight hydrocarbons, common contaminants in most air sources. Other experimental parameters were also investigated and optimized. The characteristics of the response to gibberellic acid were also established. When isolated barley aleurone layers, in medium containing gibberellic acid, were exposed to ethylene, there was a change in the synthesis and release of amylase, relative to layers maintained in an ethy1ene-free environment. During the initial 24 h, ethylene accelerated both the appearance of total amylase activity, and the release of this activity from the aleurone layers. However, the isoelectric patterns of amylase and proteins released from control and ethy1ene-treated aleurone layers were identical. On the other hand, ethylene reduced the total amount of amylase activity that was found after 48 h and 72 h. The nature of the response to ethylene was dependent on the concentration of gibberellic acid in the medium. Other processes that occur simultaneously with the synthesis and release of amylase were also examined. These included the syntheses of other hydyrolytic enzymes - xylanase, glucanase and haemoglobinase. The development of xylanase activity was enhanced by ethylene, whereas the rate of glucanase synthesis was unaffected. The role of haemog1obinase activity in the response to ethylene was examined directly, and also through the addition of either potassium bromate or N-ethylmaleimide, inhibitors of sulphydryl enzymes. The sulphydryl group inhibitors prevented the reduction in amylase activity (relative to control samples) otherwise observed in samples that had been exposed to ethylene for longer periods of time (48 h and 72 h). The direct assay of haemoglobinase activity revealed no significant change in proteolytic activity in response to ethylene. In addition to the biosynthesis of hydrolytic enzymes, the redistribution of ionic species in response to ethylene was explored. Ethylene had no effect on the overall shift in the pH of the medium surrounding the aleurone layers. When the release of individual ionic species was examined, the release of calcium was much more sensitive to ethylene than the release of any of the other ions considered (potassium, magnesium and phosphate). Ethylene induced a 101% increase in the release of calcium from gibberellic acid-treated aleurone layers. The possible relevance of these events to the action of ethylene on the gibberellic acid-enhanced synthesis and release of amylase by isolated barley aleurone layers is discussed.

Download or read book Australian Journal of Chemistry written by and published by . This book was released on 2004 with total page 690 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book American Doctoral Dissertations written by and published by . This book was released on 1969 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Summaries of Projects Completed written by National Science Foundation (U.S.) and published by . This book was released on with total page 728 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Summaries of Projects Completed in Fiscal Year written by and published by . This book was released on 1979 with total page 718 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Summaries of Projects Completed in Fiscal Year written by National Science Foundation (U.S.) and published by . This book was released on 1979 with total page 720 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dissertation Abstracts International written by and published by . This book was released on 1970 with total page 1396 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Classics in Total Synthesis written by K. C. Nicolaou and published by John Wiley & Sons. This book was released on 1996-04-11 with total page 826 pages. Available in PDF, EPUB and Kindle. Book excerpt: K.C. Nicolaou - Winner of the Nemitsas Prize 2014 in Chemistry This book is a must for every synthetic chemist. With didactic skill and clarity, K. C. Nicolaou and E. Sorensen present the most remarkable and ingenious total syntheses from outstanding synthetic organic chemists. To make the complex strategies more accessible, especially to the novice, each total synthesis is analyzed retrosynthetically. The authors then carefully explain each synthetic step and give hints on alternative methods and potential pitfalls. Numerous references to useful reviews and the original literature make this book an indispensable source of further information. Special emphasis is placed on the skillful use of graphics and schemes: Retrosynthetic analyses, reaction sequences, and stereochemically crucial steps are presented in boxed sections within the text. For easy reference, key intermediates are also shown in the margins. Graduate students and researchers alike will find this book a gold mine of useful information essential for their daily work. Every synthetic organic chemist will want to have a copy on his or her desk.

Download or read book Hormone Metabolism and Signaling in Plants written by Jiayang Li and published by Academic Press. This book was released on 2017-04-19 with total page 618 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plant Hormones: Biosynthesis and Mechanisms of Action is based on research funded by the Chinese government’s National Natural Science Foundation of China (NSFC). This book brings a fresh understanding of hormone biology, particularly molecular mechanisms driving plant hormone actions. With growing understanding of hormone biology comes new outlooks on how mankind values and utilizes the built-in potential of plants for improvement of crops in an environmentally friendly and sustainable manner. This book is a comprehensive description of all major plant hormones: how they are synthesized and catabolized; how they are perceived by plant cells; how they trigger signal transduction; how they regulate gene expression; how they regulate plant growth, development and defense responses; and how we measure plant hormones. This is an exciting time for researchers interested in plant hormones. Plants rely on a diverse set of small molecule hormones to regulate every aspect of their biological processes including development, growth, and adaptation. Since the discovery of the first plant hormone auxin, hormones have always been the frontiers of plant biology. Although the physiological functions of most plant hormones have been studied for decades, the last 15 to 20 years have seen a dramatic progress in our understanding of the molecular mechanisms of hormone actions. The publication of the whole genome sequences of the model systems of Arabidopsis and rice, together with the advent of multidisciplinary approaches has opened the door to successful experimentation on plant hormone actions. Offers a comprehensive description of all major plant hormones including the recently discovered strigolactones and several peptide hormones Contains a chapter describing how plant hormones regulate stem cells Offers a fresh understanding of hormone biology, particularly molecular mechanisms driving plant hormone actions Discusses the built-in potential of plants for improvement of crops in an environmentally friendly and sustainable manner