.... 

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Evaluation of the Listeria monocytogenes 's Population in the First Batch of Ha

1.00E+09 1.00E+08 1.00E+07 1.00E+06 1.00E+05 

1.00E+04 1.00E+03 1.00E+02 1.00E+01 1.00E+00 

0 45 66 94 122 15

Time (Days) 
Evaluation of Literia monocytogenes' Population in the First Batch of Hams 

1.00E+10 1.00E+09 1.00E+08 1.00E+07 1.00E+06 1.00E+05 1.00E+04 1.00E+03 1.00E+02 1.00E+01 1.00E+00 

0 45 66 94 122 15

Time (Days) 
Evaluation of Listeria monocytogenes Population in the First Batch of Hams 

1.00E+10 1.00E+09 1.00E+08 1.00E+07 1.00E+06 1.00E+05 1.00E+04 1.00E+03 1.00E+02 1.00E+01 1.00E+00 

0 45 66 94 122 150 

Time (Days) 
Figure 2. Evaluation of Listeria monocytogene

Population on Inoculated Country-cured Ham

10.0000 

9.0000 8.0000 7.0000 6.0000 

Microbial Population 5.0000 

(Log10CFU/cm2) 

4.0000 

Salt Nitrite (NO2) Salt+Smoking NO2+Smoking 

3.0000 2.0000 1.0000 0.0000 

Average Average

8.77 

Average Average Average

 5.34 4.46 3.75 

Average

 2.06 

Avera

 0.2

8.4 

0 45 66 94 122 150 178 

Time(Days) 
Listeria monocytogenes evaluation on inoculated hams. 

Population(Log10CFU/cm2 

) 

0.0000 1.0000 2.0000 3.0000 4.0000 5.0000 6.0000 7.0000 8.0000 9.0000 

10.0000 

"Salt curing" 8.4771 8.5441 5.6990 5.6532 4.9117 4.2553 Nitrite curing 8.4150 9.0128 5.0000 5.6021 5.1139 2.0000 Salt+smoking 8.4771 8.5441 5.6990 3.6021 1.0000 1.0000 NO2+smoking 8.4150 9.0128 5.0000 3.0000 5.0086 1.3010 

0 45 66 94 122 150 

Time(Days) 
II 

Listeria monocytogenes evaluation on inoculated Country hams 

0.0000 1.0000 2.0000 3.0000 4.0000 5.0000 6.0000 7.0000 8.0000 9.0000 

10.0000 

Population 

(Log10CFU/cm2) 

Salt non-smoked 8.4771 8.5441 5.6990 5.6532 4.9117 4.2553 1.000NO2 non-smoked 8.4150 9.0128 5.0000 5.6021 5.1139 2.0000 1.079Salt smoked 8.4771 8.5441 5.6990 3.6021 1.0000 1.0000 1.000NO2 smoked 8.4150 9.0128 5.0000 3.0000 5.0086 1.3010 1.000

0 45 66 94 122 150 178 

*Microbial population equal 1.0000Log10CFU/cm2 are below the levels of detection. Processing time (Days)
Listeria monocytogenes evaluation on inoculated Country-Cured Hams

Microbial Population CFU/cm2 

10.0000 

9.0000 

8.0000 

7.0000 

6.0000 

5.0000 

4.0000 

3.0000 

2.0000 

1.0000 

0.0000 

Processing Time (Days) 206

0 45 66 94 122 150 178 

SsSS

Salt+N

Salt smok

salt+NO2 n

Salt non-smok

234 
First batch of Hams inoculated with Listeria monocytogenes . 

Salt+non -smoke Population UFC/ml Days Log10UFC/ml Avera

3.00E+08 0 8.4771 8.45 

3.50E+08 45 8.5441 8.78 

5.00E+05 66 5.6990 5.35 

4.50E+05 94 5.6532 4.46 

8.16E+04 122 4.9117 4.01 1.80E+04 150 4.2553 2.14 1.00E+00 178 1.0000 1.02 1.00E+00 206 1.0000 1.00 1.00E+00 234 1.0000 1.00 

Nitrite+ non-smoke Population UFC/ml Days Log10UFC/ml 

2.60E+08 0 8.4150 

1.03E+09 45 9.0128 

1.00E+05 66 5.0000 

4.00E+05 94 5.6021 

1.30E+05 122 5.1139 1.00E+02 150 2.0000 1.20E+01 178 1.0792 1.00E+00 206 1.0000 1.00E+00 234 1.0000 
Salt+smoking Population UFC/ml Days Log10UFC/ml 

3.00E+08 0 8.4771 

3.50E+08 45 8.5441 

5.00E+05 66 5.6990 

4.00E+03 94 3.6021 

1.00E+00 122 1.0000 1.00E+00 150 1.0000 

1.00E+00 178 1.0000 1.00E+00 206 1.0000 1.00E+00 234 1.0000 

Nitrite+Smoking Population UFC/ml Days Log10UFC/ml 

2.60E+08 0 8.4150 

1.03E+09 45 9.0128 

1.00E+05 66 5.0000 

1.00E+03 94 3.0000 

1.02E+05 122 5.0086 2.00E+01 150 1.3010 1.00E+00 178 1.0000 1.00E+00 206 1.0000 1.00E+00 234 1.0000 

Weight of hams after aging#5 Salt (grams) Nitrite (Grams) 

8.02 7.24 7.28 7.24 7.44 7.81 
7.8 7.6 

Average 7.635 7.4725