Journal of Dairy Science
Volume 90, Issue 11 , Pages 4938-4941 , November 2007

Hot Topic: Black Spot Defect in Cheddar Cheese Linked to Intramammary Teat Sealant

  • A.M. Lay

      Affiliations

    • Chr. Hansen Inc., Milwaukee, WI 53214
    • ,
  • K.M. Kolpin

      Affiliations

    • Department of Food Science and Technology, Oregon State University, Corvallis 97331
    • ,
  • D.A. Sommer

      Affiliations

    • Center for Dairy Research,University of Wisconsin, Madison 53706
    • ,
  • S.A. Rankin

      Affiliations

    • Department of Food Science, University of Wisconsin, Madison 53706
    • Corresponding Author InformationCorresponding author.

Received 24 May 2007 ,Accepted 25 July 2007.

  • Image Result

    Image of black spot defect in aged (>9 mo) colored Cheddar showing a characteristic “halo” around the center. Small white flecks are probable calcium lactate crystals. Color image is available online

    Image of black spot defect in aged (>9 mo) colored Cheddar showing a characteristic “halo” around the center. Small white flecks are probable calcium lactate crystals. Color image is available online at http://jds.fass.org/content/vol90/issue11/.

  • Image Result
    A representative image of typical hair-like “nanorod” structures found in black spot defect region of Cheddar cheese.

    A representative image of typical hair-like “nanorod” structures found in black spot defect region of Cheddar cheese.

  • Image Result
    Cheddar cheese plugs containing 15% (wt/wt) bismuth subnitrate (A) or intact intramammary teat sealant (B) after exposure to hydrogen sulfide gas for 10min. Plug C contained no additives. Color image

    Cheddar cheese plugs containing 15% (wt/wt) bismuth subnitrate (A) or intact intramammary teat sealant (B) after exposure to hydrogen sulfide gas for 10min. Plug C contained no additives. Color image is available online at http://jds.fass.org/content/vol90/issue11/.

PII: S0022-0302(07)71961-6

doi: 10.3168/jds.2007-0385

Journal of Dairy Science
Volume 90, Issue 11 , Pages 4938-4941 , November 2007

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