Immunomagnetic separation (IMS) is one such a method that
has been suggested to reduce the total time of analysis and improve
the sensitivity of detection of pathogenic microorganisms
(Weagant & Bound, 2001; Wright, Chapman, & Siddons, 1994).
Superparamagnetic particles are coated with antibodies against the
target pathogen, forming immunomagnetic beads (IMBs). The IMBs
can bind to the target bacteria, forming a beadebacteria complex
that is easily separated from food matrix and background bacteria
and then concentrated into a smaller volume by exposure to a
magnetic field. It can significantly shorten detection time, improve
sensitivity, and eliminate interference from fat, protein, and viscosity
of food matrices; thus improving foodborne pathogen