Table 1 The counts showing acid tolerance of the non- adapted and the adapted cells of the probiotics over time

B. bifidum LMG 11041

No

6.76 ± 1.1

6.63 ± 1.2

6.48 ± 1.1

6.71 ± 2.1

6.65 ± 1.2

6.54 ± 0.6

6.99 ± 3.2

6.93 ± 2.8

6.69 ± 1.5

Yes

6.95 ± 1.5

6.84 ± 1.0

6.79 ± 1.2

6.88 ± 2.3

6.78 ± 2.5

6.72 ± 1.7

6.98 ± 2.8

6.95 ± 2.3

6.88 ± 2.0

B. longum LMG 13197

No

6.76 ± 1.2

6.67 ± 1.5

6.53 ± 1.0

6.66 ± 1.2

6.64 ± 0.8

6.58 ± 1.6

6.86 ± 1.7

6.81 ± 2.0

6.74 ± 2.2

Yes

6.87 ± 2.5

6.82 ± 1.2

6.75 ± 1.5

6.89 ± 2.5

6.79 ± 1.5

6.64 ± 2.0

6.93 ± 3.5

6.87 ± 2.7

6.79 ± 2.5

B. longum Bb46

No

6.62 ± 1.5

6.57 ± 1.1

6.43 ± 1.2

6.69 ± 0.5

6.62 ± 1.1

6.54 ± 1.8

6.65 ± 2.0

6.6 ± 2.3

6.54 ± 1.7

Yes

6.82 ± 2.0

6.77 ± 2.3

6.64 ± 1.8

6.79 ± 1.0

6.65 ± 1.2

6.58 ± 1.5

6.63 ± 2.5

6.6 ± 2.1

6.57 ± 2.1

L. acidophilus La14 150B

No

7.88 ± 1.2

7.76 ± 0.8

7.69 ± 1.2

7.79 ± 2.2

7.67 ± 2.5

7.56 ± 2.8

7.97 ± 2.2

7.79 ± 2.0

7.68 ± 2.1

Yes

7.97 ± 1.5

7.91 ± 0.3

7.81 ± 1.2

7.94 ± 3.3

7.87 ± 2.8

7.72 ± 2.0

7.98 ± 2.0

7.83 ± 1.8

7.79 ± 2.3

L. fermentum

No

7.72 ± 0.7

7.57 ± 1.3

7.52 ± 0.5

7.88 ± 1.5

7.68 ± 1.8

7.51 ± 2.0

7.81 ± 1.2

7.59 ± 1.5

7.54 ± 1.8

Yes

7.87 ± 1.5

7.89 ± 0.8

7.79 ± 1.2

7.85 ± 2.5

7.83 ± 2.1

7.76 ± 1.8

7.89 ± 2.6

7.8 ± 1.8

7.77 ± 1.5

L. plantarum

No

7.93 ± 1.3

7.72 ± 1.5

7.61 ± 1.2

7.97 ± 1.9

7.79 ± 0.9

7.69 ± 0.2

7.93 ± 1.8

7.86 ± 1.2

7.68 ± 1.5

Yes

7.94 ± 2.3

7.85 ± 1.7

7.78 ± 1.3

7.99 ± 2.0

7.89 ± 1.6

7.79 ± 1.2

7.98 ± 2.5

7.93 ± 2.2

7.86 ± 2.3