3.1.2. Cheese
Experimentally contaminated cheese samples were treated with
ListShield™ at an application rate of 1 108 PFU/g. A reduction by
82% (0.7 log) was noted following a 5 min treatment with ListShield™
(Fig. 2B). After storage for 24 and 96 h, the levels of L. monocytogenes remained significantly lower (p < 0.001) from the
PBS treated controls, resulting in a reduction by 78% (0.7 log) and
68% (0.5 log), respectively. Other researchers have shown slightly
higher initial reductions in L. monocytogenes levels in cheese
samples treated with phages (~2 log) but the overall reductions
upon storage were similar (Silva et al., 2014). After the initial
reduction in L. monocytogenes, no further reduction occurred during
storage