Isolates/Standard strain

Acid Tolerance Test (pH media 2.5)

Viable Bacterial Counts (log CFU/ml)

0 hour

1 hour

2 hour

Survival

L. casei ATCC 393

7.45 ± 0.02

6.69 ± 0.06

4.96 ± 0.03

66.64%

DUA1

6.40 ± 0.06

NG

NG

-

DUA4

7.16 ± 0.06

6.11 ± 0.06

5.39 ± 0.03

75.36%

DUB4

6.22 ± 0.06

NG

NG

-

DUB6

6.90 ± 0.06

NG

NG

-

DUC1

7.02 ± 0.04

5.23 ± 0.05

3.28 ± 0.06

46.72%

DUC6

6.30 ± 0.04

NG

NG

-

DUD3

7.11 ± 0.06

6.89 ± 0.07

4.91 ± 0.07

69.14%

DUE2

7.05 ± 0.03

5.94 ± 0.03

3.69 ± 0.10

52.36%

DUE7

6.56 ± 0.06

NG

NG

-

DUF1

6.12 ± 0.06

NG

NG

-

DUF3

7.04 ± 0.02

5.67 ± 0.07

2.87 ± 0.07

40.76%

NG = No growth