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Table 2 Tolerance of the strains to acidic pH and bile salts at 37 °C for 0 and 4 h (log CFU/mL)

From: Sustainable microbial cell nanofactory for zinc oxide nanoparticles production by zinc-tolerant probiotic Lactobacillus plantarum strain TA4

Strain

pH

Bile

2.5

3.5

0.3%

0.6%

0 h

4 h

SR  %

0 h

4 h

SR  %

0 h

4 h

SR  %

0 h

4 h

SR  %

TA4

9.22 ± 0.04

9.12 ± 0.01

79a

9.36 ± 0.02

9.32 ± 0.06

90.5a

8.93 ± 0.07

8.85 ± 0.11

83.2a

9.06 ± 0.17

9.01 ± 0.19

88.5a

SC8

9.23 ± 0.05

9.00 ± 0.07

59.9a

9.24 ± 0.07

9.20 ± 0.10

91.5a

9.05 ± 0.18

8.95 ± 0.05

81.5a

9.05 ± 0.15

9.00 ± 0.14

90.3a

FF2

9.24 ± 0.02

9.16 ± 0.11

85.1a

8.98 ± 0.05

8.95 ± 0.08

91.8a

9.02 ± 0.02

8.91 ± 0.05

78.1a

8.72 ± 0.03

8.67 ± 0.11

88.1a

MPJ10

9.35 ± 0.07

9.20 ± 0.11

70.4a

9.22 ± 0.05

9.20 ± 0.05

94.3a

9.02 ± 0.04

8.97 ± 0.04

89.9a

8.75 ± 0.09

8.64 ± 0.04

76.7a

  1. The results are expressed as mean (n = 3) ± SD, and values within the same column with different superscript letters indicate statistical differences in each strain according to Tukey’s test at p < 0.05. The means are presented as log-transformed values of CFU/mL of the strains
  2. SR% survival rate percentage