Table 1. Antimicrobial activity of the cell free supernatant (CFS) of the Leuconostoc isolates against Listeria monocytogenes MTCC 657 in spinach stored at 4°C for a period of 5 days represented as average Log₁₀ CFU/mL of rinse of the different groups at different time points

Groups	Log10 CFU/mL of rinse1)				% of reduction over control2)
	0 d	1 d	2 d	5 d	0 d (%)	1 d (%)	2 d (%)	5 d (%)
Control	5.81± 0.08a,x	5.91±0.04a,x	5.89±0.08a,x	5.85±0.09a,x	N/A	N/A	N/A	N/A
CM17 CFS	5.7± 0.24a,x	5.38±0.16c,xy	5.42±0.04b,y	5.35±0.12bc,y	22.3	71.0	65.8	68.7
CM19 CFS	5.73±0.07a,x	5.75±0.13b,x	5.42±0.08b,y	5.41±0.03b,y	18.0	30.8	66.3	64.2
PM30 CFS	5.79±0.06a,x	5.35±0.10c,y	5.09±0.07bc,yz	5.01±0.014cd,z	6.2	72.9	84.1	85.8
PM32 CFS	5.76±0.11a,x	5.46±0.10c,y	5.39±0.07bc,y	5.28±0.06bcd,y	11.3	65.0	68.4	73.2
PM36 CFS	5.78±0.09a,x	5.34±0.29c,y	5.24±0.24c,y	4.86±0.07d,y	7.2	73.3	77.8	90.0

n=3, p<0.05.
Cells with different alphabets represent statistical difference.
represents statistical difference between the groups at a specific testing period whereas
represents statistical difference within a group over time.
The % of reduction represented for the antimicrobial treatment groups indicate % reduction over the control at a specific testing time point.
MTCC, microbial type culture collection and gene bank.