NOVEMBER, 1966 Vol. 29 P. 333-362 No. 11 -II r•' ' • ''We've converted 100% to Transflow M-34R plastic milk hose and vacuum lines'' says Harold To/lerup, Corona, California, dairyman "We'll never use rubber again II , adds John Mann, Tollerup's foreman • Alert, successful, businesslike . Tollerup Dairy milks 862 Holsteins every day. Its milking machines are all equipped with clear, flexible TRANSFLOW M-34R Milk Hose and TRANSFLOW Vacuum Tubing. "It's lots cheaper than rubber because it lasts a lot longer," Tollerup says of his TRANSFLOW. "It's less trouble, too." Foreman John Mann agrees. " It doesn't crack, and when you accidentally bend the hose during milking it doesn't pinch like rubber will . Also, it doesn't crack, and no bl ack rubs off as happens with rubber. It's easy to handle, too. I'm sold on TRANSFLOW ~" Isn't it time that you started changing over to TRANS­ FLOW? It'll pay for itself over and over saving time, money and trouble. But ... be sure you get genuine TRANSFLOW! Look for the name branded on every foot. You can also tell TRANS FLOW Milk Hose by its blue stripe and, of course, TRANSFLOW Vacuum Tubing is the "sparkling black Above. A portion of t he p it in Tollerup's herringbone b arn. (The d airy hose with the clean white stripe. " also has a con ven tional barn .) Note TRAN SFLOW connected along left Get all the facts! Write today for complete informa­ side. "With T RA NSFLOW 's clea rness you can see t he cow's m ilk flow. I'm sold on TRAN SFLOW, " says forema n John Mann. tion on TRANSFLOW Milk Hose and Vacuum Tubing. Plastics & Synthetics Division • 1910·0 A SUBSIDIARY OF HAYNES $NAl'~l"fE GASKETS " FORM -FIT" WIDE FlANGE MOLDED TO . HUGS STANDARD BEVEL PRECISION STANDARDS SEAT fiTTINGS Tki6 tuce lfti6l-eike HA YNES-SPRA V U.S. P. LIQUID PETROLATUM SPRAY Gkw&l lu! med ill~: UP. UNITIO STITES PHARMACEUTICAL STIHOAROS SANITARY VALVES CONTAINS NO ANIMAl OR VEGETABlE FATS. ABSOlUTElY HOMOGENIZER PISTONS - RING NIUTRAl. Will NOT TURN RANCID- CONTAMINA Tl OR SANITARY SEALS & PARIS TAINT WHIN IN CONTACY WITH FOOD PRODUCTS. CAPPER SliDES & PARIS POSITIVE PUMP PARI~ SANITARY-PURE GLASS & PAPER FilliNG MACHINE PARTS SNAP INTO ODORLESS -TASTELESS and loo All OTHER SANITARY FITTINGS MACHINE PARTS which ore NON-TOXIC cleaned doily. LEAK-PREVENTING NEOPRENE GASKET for ~anitary Fittings Tke JKedetm HAYNES-SPRAY JKetkM ~ .c~ C~CVIIQ MCitk Ute J«i£k OruliKaKu ru«L Ccule ekd t4e4e $NA1'!J'I'l'E ri~a<JU R~ by Ute U.S. PKbelc HeoWt Se!Wia right joints, no leaks, no shrinkage Time-saving, easy ta assemble Sanitary, unaffected Self-centering The Haynes-Spray eliminates the danger of by heat or fats contamination which is No sticking to fittings possible by old fashioned ·lubricating methods. Spreading lubricants Non-porous, no seams or crevices Eliminate line by the use of the finger method may entirely destroy blocks previou ~ Odorless, polished surfaces, easily cleaned bactericidal treotment of equipment. Hell' overcome line vibrations Withstand sterilization Long life, use over and over PACKED 6·12 OL CANS PER CARTON THE H~YNES MANUFACTURING Available for J•, 1~·, 2", 2~· one! J• fittings. SHIPPINC WDGHT-7 LIS. CO. 4180 Lorain Avenue • Cleveland 13, Ohio Pacl<ed 100 to the box. Order through your dairy supply house, HAYNES-SPRAY .INGREDIENTS CONFORM WITH FDA REGULATIONS AND CAN BE THE HAYNES SAFELY USED AS A SANITARY LUBRICANT FOR FOOD PROCESSI NG EQUIPMENT MANUFACTURING CO. WHEN USED IN COMPLIANCE WITH A EXISTING FOOD ADDITI. ~S REGULATION • 4180 Lorain Avenue • Cleveland 13, Ohio • A HEAVY DUTY SANITARY LUBRICANT *MADE FROM Available in bol~ TEFLON ® SPRAY AND TUBE "Tile Soplmtiwted Ga6ket" All lubri- Film ingredients are approved by F.D .A. and can be THE IDEAL UNION SEAL FOR safely utilized as a lubricant for BOTH VACUUM AND food processing equipment when. slightly off . white PRESSURE LINES used in compliance with an exist­ SNAP-TITE sell-centering gaskets of TEFLON are designed for all standard bevel seat sanitary fittings. They SNAP into place provid­ ing food additive regulation. ..I ing self-alignment and ease of assembly and disassembly. ~ HAYNES SNAP-liTES of TEFLON are unaffected by cleaning solu­ tions, steam and solvents. They will not embrittle at temperatures ESPECIALLY DEVELOPED FOR LUBRICATION OF FOOD as low as minus 200° F. and are impervious to heat up to 500° F. PROCESSING AND PACKAGING EQUIPMENT fOR l FITTING GASKET THAT Will OUT-PERFORM All OTHERS ... For Use in Dairies- Ice Cream Plants- Breweries­ Beverage Pla nts- Ba keries- Canneries - Pocking Pla nts S~~y ... HAYNES SNAP- TITES of TEFLON SANITARY • NON TOXIC • ODORLESS • TASTELESS • TEFlON ACCEPTED SAFE FOR USE ON FOOD & rROCESSING EQUIPMENT BY U. S. FOOD AND DRUG ADMINISTRATION SPRAY- PACKED 6- 16 OZ . CAN S PER CARTON * Gaskets mode of DuPont TEFlON ® TfE.flUOROCARBON RESINS TUBES- PACKED 12 - 4 OZ. TUBES PER CARTON THE HAYNES MANUFACTURING COMPANY THE HAYNES MANUFACTURING CO. 4180 LORAIN AVENUE • CLEVELAND, OHIO 44113 CLEVELA i" D 13, OHIO I ( •I • still the sta:ndard TODAY 1953 1939 1924 , • DIFCO LABORATORIES DETROI T MI C HI G AN U SA QUALITY AND SERVI CE SIN C E 1 895 • II OFFICERS AND EXECUTIVE BOARD Journal of President, PAUL R. ELLIKER, Dept. Microbiology, Oregon State Uni­ versity, Corvallis, Oregon 97331 P1·esident-Elect, A. N. MYHR, Dairy Science Dept., University of Guelph, MILK and Guelph, Ontario, Canada. FOOD Fi-rst V·ice-President, SAMUEL 0. NoLES, Dairy Division, Florida State Board of Health, Jacksonville, Florida. Second Vice-P-resident, MILTON E. HELD, TECHNOLOGY 910 Lupin Way, San Carlos, Calif. 94070. Sec'y.-T-reas., KARL K. JoNEs, 2645 W. INCLUDING MILK AND FOOD SANITATION 22nd St., Indianapolis, Indiana 46222. Official Publication ]unio1· Past-P·resident, FRED 'E. UETZ, International Association of Milk, Food and 395 Maitland Ave., West Engle­ wood, N. J. 07666. Environmental Sanitarians, Inc. Senior Past-P1·esident, vV. c. LAWTON, R.Ec. U. S. PAT. OFF. 2424 Territorial Rd., St. Paul, Minn. 55114. Vol. 29 November, 1966 No. 11 Publication Board DR. J. c. OLSON, JR ., H. L. THOJ'v!ASSON KARL K. JONES Effects of Leucocyte Dengeration on Mastitis Screening Tests. Editors B. Singh and R. T . Marshall ------ -------------------·_333 Drr. J. C. OLSON, JR., Editor, Dept. Food Science and Industries, Uni­ A Limited Study on the Sanitation versity of Minn., St.. Paul 1, Minn. 55101. of Fishing Trawler Holds \V. J. DIXON, Associate Editor, 5318 Robert E . Levin and F. Miles Sa:wyer ____ ______________ 336 North Virginia, Kansas City, Mo. 64118. Report of Progress-Standard Methods for the H . L. THOMASSON, Execut·ive Secretaru Examination of Dairy Products and Managing Editor, Box 437, , 12th Edition Shelbyville, Indiana 46176. William G. Walters ________ ______ _________ _____ __ ____ 338 Editorial Board Latest Developmm ts in Research on Botulism C. A. ABELE _____ ___ Chicago, Illinois E. M. Foster and H . Sugiyama _____________ ___ ___ _____ 342 H. S. ADAMS ____ Indianapolis, Indiana F. W. BARBEll ______ Glenview, Illinob Pre L. A. BLACK ________ Cincinnati, Ohio paring Local Health Departments J. C. FLAKE ______ Washington, D. C. to Cope with Foodborne Disease Outbreaks L. G. HARMON ___ East Lansing, Mich. E. K. HARRIS _____ ___ Cincinnati, Ohio Robert Dalton _---- - ------ ------------------- - -------348 R. P. HAYWARD __________ Bowie, Mel. C. A. HuNTER ______ __ Topeka, Kansas Water Quality Act of 1965-Impact ; C. K. JoHNS __ Ottawa, Ontario, Canada 0 . W. KAu FMANN __ Ea~t Lansing, Mich. on the Dairy and Food Industry !W. C. LAWTON __ __ St. Paul, Minnesota H. G. H arcling __ ___________ _____ __ __ __ ____ ____ _______ _350 W. S. MuELLER _______ _.Amherst, Mass. P. W . PURDOM __ ____ Philadelphia, Pa. G. \•V. REINBOLD __________Ames, Iowa Association Affairs _ -------------------- __ ------------- --_____ _354 K. G. VVECKEL ____ Madison, Wisconsin J. C. WHITE ________ Ithaca, New York News and Events ------------------------------- - -------------357 1"he Journal of Milk and F ood Technology is issued monthly beginning with the January number. Each \'Olllml! comprises 12 numbers. Index to Advertisers ------------------------------------------361 Published by the International .Association of ~!ilk~ Food and Environmental Sanitarians, Classified Ads ------- - ---------------- - ---- --______ __ __ __ ____ _362 Inc. with executive offices of the .Association , Blue Rldre Rd., P. 0 . Box 43 7, Shelbyv!lle. Ind. Entered as second cla ss matters a t the Post Office at Shelbyville, Ind., IIIarch 1952, under the .Act of Uarch 3. 1879. • Business Matters : Correspondence regarding shoul d be sent to the excteutive office of the business matters, advertising, subscriptions, Associa tion. P. 0. Box 437, Shelbyville, EDITORIAL OF FICES: J. C. Olson, Jr., Ind. I Editor, Dept. Food Science and Industries, Uni­ orders for single copies, etc., should be ad­ .. dressed to H. L. Thomasson (address above). l versity of Minn., St. Paul, Minn. 55101; H. Membership Dues : Member ship ln the In­ L. Thomasson, Managing Editor, P . 0 . Box terna ti Subscription Rates: On e volume per ona! .Association of :t\filk, F ood and En­ 437, Shelbyv!lle, Indiana 46176. year, Vi l'onm ental Sanita In div idual rians, Inc., is $10 .00 per Manuscripts non-members, Go\ernmental and : Cdrrespondence regarding man­ Com mercial Orga nization subscription. rear, which includes annual subscription to uscripts and other reading material should the Journal of Milk and Food Technology. be .11dd•essed to J. C. Ol snn , Jr., Ertitor. Dept. 1 yr... .... ······························- ·························$10.00 All Ccrresponden.ce regarding membership, re­ Foot! Science and Industries, University of Publi c a nd Educational Institution mittances for dues, failure to receive copies Minn., St.