Skip to main content

Table 4 Log CFU mL -1 of CFS-treated L. monocytogenes (A), S. aureus (B) and Salmonella (MI1) (C) delayed cultures

From: Potential of cell-free supernatants from cultures of selected lactic acid bacteria and yeast obtained from local fermented foods as inhibitors of Listeria monocytogenes, Salmonella spp. and Staphylococcus aureus

A. L. monocytogenes

Day

CFS (%)

 

CFS

 
  

Total LAB

Lactococcus

Labmix

S. thermophilus

0

0

 

1.38 × 106 ± 2.56 × 104

 
 

30

 

1.45 × 106 ± 1.06 × 104

 
 

40

 

1.88 × 106 ± 1.52 × 104

 
 

50

 

1.68 × 106 ± 2.82 × 104

 

1.5

0

 

1.28 × 109 ± 7.03 × 108

 
 

30

3.35 × 108 ± 3.53 × 107*

8.50 × 108 ± 7.07 × 107**

2.05 × 108 ± 7.07 × 106*

4.40 × 108 ± 8.48 × 107**

 

40

ND

1.55 × 108 ± 3.53 × 107*

4.15 × 108 ± 7.77 × 107*

5.80 × 108 ± 2.82 × 107**

 

50

5.25 × 108 ± 7.07 × 106**

8.50 × 108 ± 7.07 × 106**

2.90 × 108 ± 1.41 × 107*

2.55 × 108 ± 6.36 × 107*

B. S. aureus

 

Day

CFS (%)

 

CFS

 
  

Total LAB

Lactococcus

Labmix

S. thermophilus

0

0

 

4.30 × 106 ± 1.76 × 104

 
 

20

 

3.57 × 106 ± 3.53 × 104

 
 

25

 

3.41 × 106 ± 3.53 × 104

 

1.5

0

 

2.20 × 108 ± 4.24 × 107

 
 

20

8.50 × 107 ± 7.07 × 106*

8.60 × 108 ± 8.48 × 107**

2.85 × 108 ± 2.12 × 107**

2.15 × 108 ± 7.07 × 106**

 

25

2.20 × 108 ± 8.48 × 107**

7.50 × 107 ± 3.53 × 107*

5.00 × 107 ± 0.0*

9.00 × 107 ± 2.82 × 107*

C. Salmonella MI1

Day

CFS (%)

 

CFS

 
  

Total LAB

Lactococcus

Labmix

S. thermophilus

0

0

 

1.55 × 106 ± 4.24 × 104

 
 

20

 

1.75 × 106 ± 1.06 × 104

 
 

25

 

1.56 × 106 ± 2.82 × 104

 

1.5

0

 

5.90 × 108 ± 3.39 × 107

 
 

20

2.00 × 107 ± 1.41 × 107*

5.00 × 107 ± 1.41 × 107*

2.00 × 107 ± 1.41 × 107*

2.50 × 107 ± 7.07 × 106*

 

25

ND

4.50 × 107 ± 2.12 × 107*

2.00 × 107 ± 1.41 × 107*

2.50 × 107 ± 7.07 × 106*

  1. For each bacterium, those experimental CFUs that are significantly less than the respective day 1.5 control CFU are marked with (*), while those that are not are marked with (**). ND- not done.