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2. New books

Author

J. H. Benedict, H. Whitney Wharton, Jim S. Berry, W. O. Lundberg, J. Craig Alexander, and J. C. Harris

Subjects
General Chemical Engineering, Organic Chemistry
Published
1963
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3. New books

Author

F. L. Kauffman, R. L. Gregory, C. D. Holland, Daniel Swern, H. Whitney Wharton, W. I. Lyness, and Ralph J. Brysson

Subjects
General Chemical Engineering, Organic Chemistry
Published
1963
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4. Polyunsaturated Fatty Acids

Author

H. Whitney Wharton

Subjects
chemistry.chemical_classification, Double bond, biology, Linoleic acid, Fatty acid, chemistry.chemical_element, Oxygen, Lipoxygenase, chemistry.chemical_compound, chemistry, Reagent, biology.protein, Organic chemistry, Methylene, Polyunsaturated fatty acid
Abstract

Publisher Summary This chapter describes the lipoxygenase method that determines the polyunsaturated fatty acids that contain at least one pair of cis-double bonds separated by a methylene group. The methylene group must be located at the ω 8C-atom. The enzyme lipoxygenase catalyzes the oxidation of these pairs of double bonds by atmospheric oxygen. The reaction products are conjugated diene hydroperoxides. The lipoxygenase method is applied in foodstuff chemistry, the oil and fat industry, biochemistry, and clinical chemistry. Typical experimental materials for this method are free fatty acids, fatty acid esters, oils, fats, hydrogenated plant oils, blood plasma and serum, seeds, and micro-organisms. The method allows the determination of as little as 5 μg or 0.018 μmole linoleic acid. The lipoxygenase method is optimum if all the necessary precautions are observed. The chapter discusses the principle, the equipment, and the reagents that are used in this method. It further highlights the preparation of enzyme solutions for that method and the stability of enzyme solutions. All the solutions that contain polyunsaturated fatty acids must be protected against atmospheric oxygen, except during the enzymatic reaction where oxygen is necessary. Storage in oxygen-free conditions is accomplished by displacing the air above the solutions with nitrogen and then stoppering the vessels.

Published
1974
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5. Contributors

Author

Robexrt H. Abeles, Hugo Aebi, Erik Änggard, Norman G. Anderson, Walter Appel, M.H. Aprison, Gilbert Ashwell, Swee E. Aw, Uriel Bachrach, Karl-Heinz Bässler, Eugene S. Baginski, Klaus Beaucamp, Günter Bechtler, Hans Ulrich Bergmeyer, Erich Bernt, Hans-Otto Beutler, Rardon D. Bevill, Heidi Birchmeier, Oscar Bodansky, Paul Boulanger, Karl Brand, Myron Brin, David J.H. Brock, John T. Brosnan, David H. Brown, Joseph G. Brown, Theodor Bücher, Hannes Büttner, Giovanni Ceriotti, James F.A. Chase, Alan Coddington, Patricia S. Cohen, Jack M. Cooperman, Rudolf Czok, Stanley Dagley, Katharina von Dahl, Arne Dahlqvist, Karl Decker, Ulrich C. Dubach, Arnold Eberhard, Fujio Egami, Leonard V. Eggleston, Manfred Eggstein, Frank Eisenberg, Hugo Fasold, William H. Fishman, Piero P. Foà, Edith Förster, Georg Forster, Jörg Frei, Ursula Friebe, Lygia W. Fried, Rainer Fried, Herbert C. Friedmann, Wolf-Peter Fritsch, Hans Fritz, Herbert J. Fromm, Ernest F. Gale, Peter Bryan Garland, Karlfried Gawehn, Ulrich Gerlach, Paul A. Giang, Martin Gibbs, Richard Gitzelmann, Guiseppe Giusti, Heinz W. Goedde, Nelson D. Goldberg, L.T. Graham, Marianne Grassi, Elaine Greenberg, Helmut Greiling, Wolfgang Gruber, Gerd Gundlach, Ingeborg Gutmann, Alexander Hagen, Erich Haid, Hans Haindl, Geoffrey Halliwell, Erwin Hansert, Shin Hasegawa, George G. Hazen, Fritz Heinz, Benno Hess, Peter-Uwe Heuckenkamp, Walter Hiby, John G. Hildebrand, Günther Hillmann, Magnus Hjelm, John R. Hobbs, Norman Joseph Hochella, Thomas Höpner, Helmut Hofner, August W. Holldorf, Günter Holz, Helmut Holzer, Bernhard L. Horecker, Koki Horikoshi, Ronald E. Huribert, Joel Hutzier, Kurt J. Isselbacher, Barbara von Jagow-Westermann, William B. Jakoby, Dieter Jaworek, Mary Ellen Jones, Søren Jørgensen, Wolfram Kaiser, Heinrich Kaltwasser, Reinhard Kattermann, Edna B. Kearney, Dietrich Keppler, John King, Bernard Klein, Martin Klingenberg, Siegmar Klose, Helmut R. Klotzsch, Leiv Klungsøyr, Joachim Knappe, Leonard D. Kohn, Friedrich-Wilhelm Koss, Gladys Krakow, Elisabeth Kuhlmann, Ernest Kun, Gerhart Kurz, Jürgen Kusche, Rudolf Lachenicht, Walther Lamprecht, Gunter Lang, Ulrich Langenbeck, Erwin Latzko, Gerhard Laudahn, Franz Leuthardt, Jacob B. Levine, Alfred Linker, Georg Löffler, Georg Wilhelm Löhr, Karin Löschenkohl, Wilfried Lorenz, Oliver H. Lowry, A. Leonard Luhby, Patricia Lund, Frank Lundquist, Feodor Lynen, Hermann Mattenheimer, Heinrich Matthaei, Claus Maurer, Dieter Mayer, Dieter Mecke, Jane Mellanby, Gerhard Michal, Hans Möllering, Gotthilf Näher, Charles W. Nagel, Robert G. Narins, Erwin Negelein, Heinrich G. Netheler, Eric A. Newsholme, Franz Noll, Hans-Dieter Ohlenbusch, Roger Osteux, Peter Otto, Antonius P.M. van Oudheusden, Paul M. Packmann, Janet V. Passonneau, David J. Pearson, Gerhard Pfleiderer, Wolfgang Pilz, Brunhilde Poppendiek, Jack Preiss, Johann Pütter, Jesse C. Rabinowitz, Efraim Racker, Elli Rauscher, Wirnt Rick, Erwin Rimbach, Peter Röschlau, Carmen Louis Rosano, Jean-François Rouayrenc, Bengt Samuelsson, George E. Schaiberger, Peter Scheibe, William Scher, Helmut Schievelbein, Hans-Günter Schlegel, Ella Schmid, Ellen Schmidt, Felix H. Schmidt, Friedrich W. Schmidt, Helmuth Schmidt, Wilhelm Schoner, Josef Schormüller, Gerhard Schreiber, Christian Schütt, Demoy W. Schulz, Morton K. Schwartz, Gertraud Schweitzer, Werner Seubert, Günther Siebert, Abraham L. Siegel, Wolfgang Staib, Dankwart Stamm, Hans-Peter Stegbauer, Philipp Stein, Harald Stork, Harold V. Street, Bernard L. Strehler, Heinrich Südhof, Szasz Gabor, Shigehiko Taniguchi, Ivar Trautschold, Philip K. Tubbs, Johannes Ullrich, P. Roy Vagelos, Carl-Henrie de Verdier, Peter Vögele, Klaus-Dieter Voigt, August Wilhelm Wahlefeld, Kurt Wallenfels, Hans Dierck Waller, Hans Elmar Walter, Klaus Walter, Otto Warburg, Arthur Weissbach, Herwig Weisser, Eugen Werle, H. Whitney Wharton, Hans-Joachim Wieker, Otto Wieland, Roger Jozef Wieme, J. Henry Wilkinson, Dermot H. Williamson, John R. Williamson, Wolfgang Wilmanns, Irene Witt, Hans-Peter Wolf, Peter Wunderwald, Hans Georg Zachau, Bennie Zak, Gottfried Zankl, Joachim Ziegenhorn, and Nepomuk Zöllner

Published
1974
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