1.48 log CFU/g, respectively, and 6 kW microwave heating for 1, 3,
and 5 min inactivated this pathogen by 0.94, 2.27, and 4.26 log CFU/
g, respectively (Fig. 4). Pasteurization of peanut butter by conventional
heating has been widely investigated many times, but this
method has not been effective for reducing Salmonella in peanut
butter. reported that conventional heating
treatment at 90 C for 30 min resulted in about 3 log reduction of
Salmonella Agona, Salmonella Enteritidis, and Salmonella Typhimurium
in peanut butter. Conventional pasteurization of peanut butter
is not an attractive control measure because of the long treatment
time. Because conventional heating is not an appealing option, many
researchers have focused on non-thermal inactivation methods to
control Salmonella in peanut butter. used
electron beam treatment for reduction of Salmonella in peanut
butter. Three kGy of electron beam radiation reduced S. Tennessee
and S. Typhimurium by 6.75 and 4.86 log CFU/g, respectively, when
plated on a selective medium (XLD) for enumeration. reported that 3 kGy of gamma irradiation reduced S. Typhimurium
in three types of peanut butter by 3.5e4.0 log CFU/g.
reported that high hydrostatic pressure under