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Table 1 The diameter of hydrolysis and precipitation rings on the solid casein medium

From: Fermentation conditions of serine/alkaline milk-clotting enzyme production by newly isolated Bacillus licheniformis BL312

CN

CD

HD

PD

P/C

P/H

DB215

4.0 ± 1.0

7.0 ± 1.0

11.5 ± 1.5

2.9

1.6

DB218

2.0 ± 0.5

3.0 ± 0.5

10.5 ± 1.5

5.3

3.5

BL312

3.0 ± 0.5

3.5 ± 0.5

18.0 ± 2.0

6.0

5.1

BL211

2.0 ± 0.5

5.0 ± 1.0

11.0 ± 2.0

5.5

2.2

QD111

1.5 ± 0.5

5.5 ± 1.0

11.0 ± 1.5

7.3

2.0

QD212

3.0 ± 0.5

4.0 ± 1.0

16.5 ± 1.5

5.5

4.1

YN111

4.0 ± 1.0

5.0 ± 1.0

17.0 ± 2.0

4.3

3.4

YN213

4.0 ± 1.0

6.0 ± 1.0

14.0 ± 2.0

3.3

2.2

NX112

4.0 ± 0.5

8.0 ± 1.0

13.0 ± 1.0

3.3

1.6

GS113

2.0 ± 0.5

5.0 ± 1.0

10.0 ± 1.5

5.0

2.0

GL111

4.0 ± 1.0

5.0 ± 1.0

9.0 ± 1.0

2.3

1.8

  1. The data are represented as mean ± SD (n = 3). CN, strain number; CD, colony zone diameter (mm); HD, hydrolysis ring diameter (mm); PD, precipitation ring diameter (mm); P/C, the ratio of PD to CD; P/H, the ratio of PD to HD. The culture time of all strains was 24 h