AUGUST - ACS Publications - American Chemical

William F. Blatt. 595 ... Fred C. Boswell and R. E. Worthington. 769. Analysis ... William E. J. Phillips, George V. Hatina, David C. Villeneuve, and ...
1 downloads 0 Views 144KB Size
Contents

VOL.

JULY/AUGUST 1971

581

Introduction to Symposium on Characterization of Proteins

581

Columns for Large-Scale Gel Filtration on Porous Gels. Jan-Christer Janson

589

Membrane Partition Chromatography : A Tool for Fractionation of Protein Mixtures William F. Blatt

595

Testing for Purity in Proteins by Gel Electrophoresis Robert F. Peterson

600

Functional Purification of Proteins and Peptides by Affinity Chromatography Pedro Cuatrecasas

605

Quantitative Amino Acid Analysis by Gas-Liquid Chromatography Charles W.Gehrke, Robert W. Zumwalt, and Kenneth Kuo

619

Disulfide Bonds : Determination, Location, and Influence on Molecular Properties of Proteins / . S. Wall

626

Methods of Tryptophan Analysis Mendel Friedman and John W. Finley

632

Selective Cleavage of Proteins Myron J. Waxdal

638

Automated Sequence Analysis of Proteins and Peptides Hugh D. Niall

645

Liquid Crystals as They Relate to the Structure of Proteins Glenn H. Brown and Rajendra K. Mishra

653

Immunochemical Characterization of Protein in Plant Studies Jean Daussant

660

Gel Chromatography in Denaturing Solvents : A Method for the Study of Protein Subunit Composition Wayne W. Fish

19, NO. 4

© COPYRIGHT

EDITOR: PHILIP K. BATES

363 17th Street Santa Monica, Calif. 90402 ADVISORY BOARD

1155

Fractionation of Rape Seed Proteins and Insulin

1 9 7 1 BY T H E A M E R I C A N

EDITORIAL HEADQUARTERS

Sixteenth St., N.W. Washington, D.C. 20036 Phone 202-737-3337 Teletype WA 23

Evan F. Binkerd, Malcolm C. Bowman, Manager, Manuscript Reviewing: Ricardo Bressani, Ron G. Buttery, Katherine I. Biggs C. O. Chichester, Edgar A. Day, Director Francis A. Gunther, J. K. Loosli, Assistant Editor: Norma Yess John H. Nair, III, E. Y. Spencer, EDITORIAL PRODUCTION OFFICE Gilbert L. Terman, Cecil H. Van Etten 20th and Northampton Sts. Easton, Pa. 18042 Manager: Charles R. Bertsch Editorial Assistant: Arlene F. Ebner 578

J. AGR. FOOD CHEM., VOL. 19, NO. 4, 1971

CHEMICAL

SOCIETY

AMERICAN CHEMICAL SOCIETY

Executive Director: Frederick T. Wall BOOKS AND JOURNALS DIVISION John Head

(Acting): Κ Crum Business

0perations

Joseph H. Kuney Assistant to the Director: Ruth Reynard

Department:

Contents Continued 750

Fate of Chloroneb in Animals Robert C. Rhodes and Harlan L. Pease

754

Penetration of Diphenylacetic Acid through Enzymatically-Isolated Tomato Fruit Cuticle as Influenced by Substitution on the Carboxyl Group M. Margaret Robertson, Price H. Parham, and Martin J. Bukovac

758

2-sec-Butyl-4,6-dinitrophenol and 2-Amino-6-sec-butyl-4-nitrophenol in Milk and Cream from Cows Fed 2-sec-Butyl-4,6-dinitrophenol Richard L. McKellar

761

Residual Aspects of 2,4,5-T and an Ester in Sheep and Cattle with Observations on Concomitant Toxicological Effects Donald E. Clark and Jack S. Palmer

765

Boron and Manganese Effects on Protein, Oil, and Fatty Acid Composition of Oil in Soybeans Fred C. Boswell and R. E. Worthington

769

Analysis of Carbonyl Flavor Constituents from Grapefruit Oil Manuel G. Moshonas

771

Rate of Formation of Methyl Ketones during Blue Cheese Ripening Clemence Κ. Dartey and John E. Kinsella

775

Release of Hydrogen Sulfide and Methyl Mercaptan from Sulfur-Containing Amino Acids Dieter W. Gruenwedel and Rabindra K. Patnaik

780

Effect of Dietary Supplements of Vitamins A, D, and Ε on Body Burdens of DDT in the Rat William E. J. Phillips, George V. Hatina, David C. Villeneuve, and Donald L. Grant

COMMUNICATIONS 785

Chemical and Sensory Data Supporting the Difference between the Odors of the Enantiomeric Carvones Theodore J. Leitereg, Dante G. Guadagni, Jean Harris, Thomas R. Mon, and Roy Teranishi

788

Characterization of the Major Sheep Urinary Metabolites of Cyclophosphamide, a Defleecing Chemical Jerome E. Bakke, Vernon J. Feil, and Richard G. Zaylskie

757 768 774

Corrections

In papers with more than one author the name of the author to whom inquiries about the paper should be addressed is marked with an asterisk in the by-line.

SUBSCRIPTION SERVICE: All communications related to handling of subscriptions, including notifications of CHANGE OF ADDRESS, should be sent to Subscription Service Department, American Chemical Society, 1155 Six­ teenth St., N.W., Washington, D.C. 20036. Change of address notification should include both old and new addresses, with ZIP numbers, and be accompanied by mailing label from a recent issue. Allow four weeks for change to become ef­ fective. SUBSCRIPTION RATES 1971: Members, domestic and foreign. 1 year $10.00; nonmembers, domestic and foreign, $20.00. Those interested in becoming members should write to the Admissions Department, American Chemical Society, 1155 Sixteenth St., N.W., Washington, D.C. 20036. Postage: Canada and Pan-American Union, $3.00; foreign, $3.50. Single copies; current issues, $5.00. Rates for back issues or volumes are available from Special Issues Sales Dept., 1155 Sixteenth St., N.W., Washington, D.C. 20036. Claims for missing numbers will not be allowed if received more than 60 days from date of mailing plus time normally required for S80

J. AGR. FOOD CHEM., VOL. 19, NO. 4, 1971

postal delivery of journal and claim. No claims allowed be­ cause of failure to notify the Subscription Service Department of a change of address, or because copy is "missing from files." Published bimonthly by the American Chemical Society, from 20th and Northampton Sts., Easton, Pa. 18042. Execu­ tive Offices, Editorial Headquarters, and Subscription Service Department, 1155 Sixteenth St., N.W., Washington, D.C. 20036. Advertising Office: 142 East Avenue, Norwalk, Conn. 06851.

JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY

and other ACS periodicals are available on microfilm. For information write to: MICROFILM, Special Issues Sales, American Chemical Society, 1155 Sixteenth St., N.W., Wash­ ington, D.C. 20036. Second-class mail privileges authorized at Easton, Pa. The American Chemical Society assumes no responsibility for the statements and opinions advanced by contributors to its publications. Guide for Authors appears on page 791 of this issue. Manu­ script (3 copies) should be submitted to Manager, Manuscript Reviewing, J. Agr. Food Chem., 1155 Sixteenth St., N.W., Washington, D.C. 20036.