The purpose of this study was planned out to evaluate the effectiveness of Acidified Sodium
Chlorite (ASC) on the viability of L. monocytogenes by contaminating Salmon fish samples
with 1x10⁸ cfu/g of L. monocytogenes, followed by dipping the contaminated samples in
different concentrations of ASC 250, 500 and 1000 ppm. The samples were stored in
refrigerator at ° 4c to be examined for L. monocytogenes count at Zero day ,First, third, fifth
and seventh day of refrigeration storage. The results revealed that the counts of
L.monocytogenes in salmon fish samples dipped in different ASC concentrations of 250, 500
and 1000 ppm in zero (treatment day), were 1x10⁷,3.8x10⁶ and 1x10⁶ cfu/g respectively, and
in the first day after storage the counts were 8x10⁶,1x10⁶ and 1x10⁵ cfu/g respectively while in
the third ,fifth and seventh day the counts were reduced to be <10 cfu/g.