However, most proteins
are denatured after heat treatment, resulting in changes in the
antigenicity and electrophoretic mobility of molecules during food
processing. DNA-based methods include polymerase chain reaction
(PCR), real-time PCR, PCR-restriction fragment length polymorphism
(PCR-RFLP) analysis, random amplification of
polymorphic DNA (RAPD) and amplified fragment length polymorphism
(AFLP)