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. 2013 Apr 2;3:1584. doi: 10.1038/srep01584

Table 2. Anti-listeria activity of different Ply500 formulations on lettuce inoculated with L. innocua cellsa.

Ply500 Formulation Log CFU after 24 h
Cell control 1.7 ± 0.09
Lettuce + listeria control 4.0 ± 0.05
Ply500 (50 μg) No cellsb
Ply500-SNP (200 μg) No cellsb
FP10 (42 μg) 2.1 ± 0.05
FP10-starch nanoparticle (80 μg) 2.8 ± 0.14

aListeria cells were grown in BHI media for 7 h and lettuce was inoculated with 50 L. innocua cells. Standard deviations were calculated from triplicate measurements. No significant killing was observed with controls of SNP-NCO, MBP, starch nanoparticles, MBP-starch nanoparticles. The amount (in μg) represents the Ply500 content of the formulation.

bNo viable L. innocua cells were observed in the plating assay.