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Knight MT, Newman MC, Benzinger MJ, Neufang KL, Agin JR, McAllister JS, Ramos M, Carter M, Duran B, Hagan K, Hansen R, Rudolph C, Quinley S, Updaw A, Neufang K, Brook L, Lucia L, Koeritzer B, Tomer J, Smith T, Brown D, Lobo C, Tobin P, O’Brien-Gammon L, Boleszcczuk P. Comparison of the Petrifilm Dry Rehydratable Film and Conventional Culture Methods for Enumeration of Yeasts and Molds in Foods: Collaborative Study. J AOAC Int 2020. [DOI: 10.1093/jaoac/80.4.806] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Abstract
A collaborative study was performed involving 18 laboratories and 6 food types to compare 3M Petrifilm yeast and mold count plates with the method described in the U.S. Food and Drug Administration’s Bacteriological Analytical Manual. Four species of mold and 2 species of yeast were used to inoculate the following foods: hot dogs, corn meal, ketchup, orange juice, yogurt, and cake mix. Each collaborator received 15 samples of each food type: 5 low-level inoculations, 5 high- level inoculations, and 5 uninoculated samples. There was no significant difference between the means of the 2 methods for any product or inoculation level. The Petrifilm yeast and mold count plate method for enumeration of yeasts and molds in foods has been adopted first action by AOAC INTERNATIONAL.
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Affiliation(s)
| | | | | | - Karen L Neufang
- Q Laboratories, Inc., 2014 Harrison Ave, Cincinnati, OH 45214
| | - James R Agin
- Q Laboratories, Inc., 2014 Harrison Ave, Cincinnati, OH 45214
| | - J Sue McAllister
- 3M Microbiology Products, 3M Center Bldg. 270-3N-04, St. Paul, MN 55144
| | - Mary Ramos
- 3M Microbiology Products, 3M Center Bldg. 270-3N-04, St. Paul, MN 55144
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