Milk Protein Detection in Raw and Cooked Meat Products Using Immunochemichal Methods
Journal of Food and Nutrition Sciences
Volume 2, Issue 5, September 2014, Pages: 236-242
Received: Sep. 4, 2014;
Accepted: Sep. 19, 2014;
Published: Sep. 30, 2014
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Cellerino Karina, Food Chemistry, Faculty of Pharmacy and Biochemistry, University of Buenos Aires, Junín 956, CP 1113, Buenos Aires, Argentina
Binaghi María Julieta, Food Chemistry, Faculty of Pharmacy and Biochemistry, University of Buenos Aires, Junín 956, CP 1113, Buenos Aires, Argentina
Cagnasso Carolina Elisa, Food Chemistry, Faculty of Pharmacy and Biochemistry, University of Buenos Aires, Junín 956, CP 1113, Buenos Aires, Argentina
Docena Guillermo, LISIN, Faculty of Exact Sciences, National University of La Plata
Lopez Laura Beatriz, Food Chemistry, Faculty of Pharmacy and Biochemistry, University of Buenos Aires, Junín 956, CP 1113, Buenos Aires, Argentina
The aim of this study was to evaluate different immunochemical methods (Dot Blot, Immnoblotting and two different ELISA kits) for the detection of milk proteins in eleven raw and cooked model systems of meat products with 0 – 5000 ppm of powder deffated milk (PDM) and in nine raw and cooked model systems of meat products with 0-2000 ppm of dry whey (DW) and in eleven commercial meat products. All the samples were analysed with Dot Blot and Immunoblotting with specific polyclonal rabbit serum against milk proteins and with two ELISA kits: Veratox® Total Milk Allergen Quantitative Test from Neogen and Ridascreen® Fast Milk from R-Biopharm. ELISA methods are more sensitive for the detection of milk proteins than Dot Blot and Immunoblotting. The R-Biopharm kit was the most sensitive kit for the analysis of these samples. However Immunoblotting can be useful for the detection of milk proteins if it is suspected that they were added as ingredients or additives. Immunoblotting allows to verify the presence of caseins and / or β-lactoglobulin. In contrast, the use of an ELISA kit is more appropriate to verify a possible cross-contamination.
Binaghi María Julieta,
Cagnasso Carolina Elisa,
Lopez Laura Beatriz,
Milk Protein Detection in Raw and Cooked Meat Products Using Immunochemichal Methods, Journal of Food and Nutrition Sciences.
Vol. 2, No. 5,
2014, pp. 236-242.
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