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Knight MT, Newman MC, Benzinger MJ, Agin JR, Ash M, Sims P, Hughes D, Arling V, Brock G, Bronstein A, Brooks R, Bucknavage M, Cirigliano M, Coles C, Farber J, Fisher B, George N, Heisick J, lannucci M, Koeritzer B, Lovett S, Mays J, McNally S, Menning C, Nelson T, Neufang K, Neuman S, O’Brien J, Rude R, Rudowski J, Singleton E, Sirivicha S, Turner S, VanderMeer J, Warburton D, Young S. TECRA Listeria Visual Immunoassay (TLVIA) for Detection of Listeria in Foods: Collaborative Study. J AOAC Int 2020. [DOI: 10.1093/jaoac/79.5.1083] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Abstract
A collaborative study involving 26 laboratories and 5 food types was performed to compare the TECRA Listeria Visual Immunoassay (TLVIA) with standard culture methods. Three foods (lettuce, ice cream, and fish fillets), under the jurisdiction of the U.S. Food and Drug Administration, and 2 foods (cooked chicken and cooked ground turkey), under the jurisdiction of the U.S. Department of Agriculture, were used to determine the effectiveness of the TLVIA. Of the 900 samples tested, 300 were inoculated with low levels (1-5 cells/25 g) of Listeria spp. and 300 were inoculated with high levels of Listeria spp. (10-50 cells/25 g). Method agreement between the conventional culture methods and TLVIA (visual) was 94.7%. Method agreement between the conventional culture methods and TLVIA (reader) was 93.6%. The colorimetric polyclonal enzyme immunoassay (TLVIA) for detection of Listeria in foods has been adopted first action by AOAC INTERNATIONAL.
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Affiliation(s)
| | | | | | - James R Agin
- Q Laboratories, Inc., 2014 Harrison Ave, Cincinnati, OH 45214
| | - Megan Ash
- Bioenterprises Pty Ltd, 28 Barcoo St, Roseville, NSW, Australia 2069
| | - Paul Sims
- Bioenterprises Pty Ltd, 28 Barcoo St, Roseville, NSW, Australia 2069
| | - Denise Hughes
- Bioenterprises Pty Ltd, 28 Barcoo St, Roseville, NSW, Australia 2069
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