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Table 2 Effect of different proportion of macromolecules and small molecule peptides in MPH on titratable acidity during 24 h of incubation

From: Proliferation of Bifidobacterium L80 under different proportions of milk protein hydrolysate

Macromolecules/small molecule peptides

0 h

4 h

8 h

12 h

16 h

20 h

24 h

Blank

23.10 ± 1.09Aa

32.00 ± 1.09Aa

52.20 ± 0.95Ca

52.80 ± 1.09Ba

61.80 ± 1.19Ea

65.10 ± 1.78Ea

79.00 ± 2.44Ea

5:5

23.10 ± 2.14Aa

35.90 ± 1.09Aa

55.80 ± 2.53Ca

58.80 ± 1.09Ba

67.80 ± 1.32Ea

79.10 ± 2.36Ea

87.00 ± 2.66Ea

4:6

23.60 ± 3.13Aa

38.30 ± 1.09Aa

58.80 ± 1.61Cb

63.70 ± 1.09Ba

73.70 ± 2.23Eb

84.40 ± 2.06Ea

87.82 ± 1.63Eb

3:7

23.90 ± 2.37Aa

38.50 ± 1.09Aa

58.40 ± 3.05Cb

72.40 ± 1.09Ba

78.50 ± 2.06Eb

84.30 ± 2.06Ea

93.60 ± 1.76Eb

2:8

23.50 ± 3.99Aa

39.80 ± 1.09Aa

60.80 ± 2.91Cb

79.50 ± 1.09Ba

87.00 ± 1.75Eb

85.10 ± 1.85Ea

94.55 ± 2.35Eb

1:9

23.2 ± 2.47Aa

41.2 ± 1.09Aa

61.20 ± 2.76Cb

71.2 ± 1.09Ba

83.00 ± 2.95Eb

86.8 ± 2.06Ea

95.6 ± 6.26Eb

Control

23.70 ± 3.01Aa

38.50 ± 1.09Aa

51.20 ± 3.98Cb

58.00 ± 1.09Ba

63.70 ± 4.33Eb

68.60 ± 2.23Ea

71.90 ± 3.05Eb

  1. A~E indicates a significant difference between the titratable acidity at different culture times (P < 0.05)
  2. a~b indicates a significant difference between the titratable acidity at different TCA-NSI MPH (P < 0.05)