Detection of staphylococcal enterotoxin a by phage display mediated immuno-PCR method

A method of staphylococcal enterotoxin A (SEA) detection in pasteurized milk using recombinant miniantibodies exposed on phage particles was developed. Miniantibodies bind to the antigen, while phage DNA serves as a matrix in polymerase chain reaction (PCR). The SEA detection limit in milk by a phage display mediated immuno-PCR method is 100 pg/mL that is much lower than the level of toxic and allergic dose.