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Table 4 Fatty acid composition of different M. alpina strains in batch fermentation

From: Metabolic engineering of Mortierella alpina for arachidonic acid production with glycerol as carbon source

Strain

Carbon source (g/L)

Time (h)

Fatty acid content (%, w/w fatty acids)

C16:0

C18:0

C18:1

C18:2

C18:3

C20:3

C20:4

Batch

 M. alpina

Glu (50)

168

9.4 ± 0.6a

6.2 ± 0.4a

15.1 ± 1.1a

6.5 ± 0.3a

4.1 ± 0.2a

5.1 ± 0.3a

45.1 ± 1.2a

 M. alpina

Gly (50)

168

11.2 ± 0.5a,b

12.6 ± 0.8b

13.6 ± 0.9 a,b

3.8 ± 0.3b

3.1 ± 0.1b

1.5 ± 0.1b

44.1 ± 2.5a

 MA-malE1-gk-1

Gly (50)

168

10.2 ± 0.4a

9.6 ± 0.6b

14.1 ± 1.1a,b

4.1 ± 0.2b

4.2 ± 0.1b

1.5 ± 0.1b,c

45.8 ± 1.3a

 MA-malE1-gk-1

Raw Gly (50)

168

17.9 ± 1.2c

11.7 ± 0.6c,d

25.9 ± 2.3c

9.5 ± 0.6c

5.1 ± 0.2c

2.1 ± 0.1d

20.1 ± 1.9b

 MA-malE1-gk-1

Raw Gly (25)

168

12.9 ± 0.5b

8.6 ± 0.5d

11 ± 0.8d

9.7 ± 1.1c

5.5 ± 0.4c

2.3 ± 0.2d

41.5 ± 1.7a

Repeated Batch

MA-malE1-gk-1

 Round I

Raw Gly (25)

72

17.6 ± 1.3c

7.6 ± 0.6e

14.3 ± 1.2a,b

9.6 ± 0.5c

5.3 ± 0.3c

1.3 ± 0.1b,c

36.2 ± 2.6d

 Round II

Raw Gly (25)

72

17.1 ± 1.6c

9.5 ± 0.3c,d

12.4 ± 1.5b,d

8.2 ± 0.4d

6.7 ± 0.2d

1.4 ± 0.1b

37.8 ± 3.5c,d

 Round III

Raw Gly (25)

72

15.1 ± 1d

8.9 ± 0.2c,d

18.9 ± 1.1e

7.6 ± 0.4d

5.6 ± 0.2c

1.3 ± 0.1b,c

36.7 ± 1.9c,d

 Round IV

Raw Gly (25)

72

18.7 ± 1.3c

9.8 ± 0.8c

18.4 ± 0.8e

7.3 ± 0.6a,d

5.1 ± 0.2c

1.1 ± 0.1c

29.7 ± 1.7e

  1. M. alpina: wild type M. alpina; MA-malE1-gk-1: ME1 and GK co-overexpressing strain; Glu glucose; Gly Glycerol; Raw Gly Raw Glycerol. a,b,c,d,e mean the values within a row with different superscript letters were significantly different (p < 0.05) as analyzed by ANOVA