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. 2016 Apr 22;47(3):749–756. doi: 10.1016/j.bjm.2016.04.006

Table 3.

Changes in the intrinsic characteristics of the artisanal Minas cheese samplesb artificially contaminated with L. innocua produced in Brazil throughout ripening.

Parameters Days of ripening
5 15 30 45 60
Lactic acid bacteria (log CFU/g) 7.40 ± 0.56a 7.43 ± 0.23a 7.05 ± 0.27a 6.67 ± 0.40a 6.65 ± 0.65a
Total coliforms (log MPN/g) 5.44 ± 0.64a 3.71 ± 0.33ac 2.23 ± 0.30bc 2.60 ± 0.22bc 1.14 ± 0.76b
Thermotolerant coliforms (log MPN/g) 4.80 ± 0.35a 2.48 ± 0.00b 0.99 ± 0.34c 0.83 ± 0.25c 0.48 ± 0.00c
Water activity (aw) 0.910 ± 0.002a 0.896 ± 0.006a 0.867 ± 0.012ab 0.868 ± 0.008ab 0.831 ± 0.020b
Moisture (%) 42.810 ± 0.263a 34.831 ± 1.186b 30.8442 ± 1.567bd 31.5717 ± 0.997bd 28.5437 ± 1.019cd
pH 5.493 ± 0.044ab 5.780 ± 0.052c 5.613 ± 0.038b 5.533 ± 0.052a 5.390 ± 0.033a
Titratable acidity (lactic acid %) 1.004 ± 0.062a 0.948 ± 0.059a 1.228 ± 0.022a 1.348 ± 0.127a 1.423 ± 0.178a
NaCl in moisture (%) 0.938 ± 0.029a 0.539 ± 0.080b 0.559 ± 0.049b 0.563 ± 0.053b 0.691 ± 0.073ab
b

Data are the average values and standard error of three batches. There is no statistical difference between the means of the parameters followed by at least the same letter considering the days of ripening at 5% probability by Tukey test.