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Table 2 Fatty acid production of different M. alpina strains grown in Kendrick medium for 168 h with glycerol as sole carbon source

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

Strain

Biomass (g/L)

Fatty acids (g/L)

ARA (mg/L)

Fatty acid yield (%)

ARA yield (%)

M. alpina (Glu*)

10.3 ± 0.6a

2.6 ± 0.2a

87.0 ± 6.1a

7.1 ± 0.5a

2.4 ± 0.2a

M. alpina

8.1 ± 0.3b

1.3 ± 0.1b

44.6 ± 2.9b

4.1 ± 0.2b

1.4 ± 0.1b

MA-gk-1

9.5 ± 1.1a,c

1.9 ± 0.2c

62.0 ± 4.5c

5.2 ± 0.4c,d

1.7 ± 0.1c

MA-gk-2

10.1 ± 0.5a

2.1 ± 0.2d

67.2 ± 4.7c

5.7 ± 0.4c

1.8 ± 0.1c

MA-gk-3

10 ± 0.6a

2.1 ± 0.1c,d

62.8 ± 3.2c

5.9 ± 0.5c

1.7 ± 0.1c

MA-g3pd1-1

8.5 ± 0.4b,c

1.5 ± 0.1b

43 ± 3.1b

4.3 ± 0.4b

1.3 ± 0.1b

MA-g3pd1-2

8.1 ± 0.5b

1.3 ± 0.1b

39.4 ± 2.9b

3.7 ± 0.4b

1.1 ± 0.1d

MA-g3pd1-3

8.4 ± 0.2b

1.3 ± 0.1b

40 ± 3.8b

3.8 ± 0.3b

1.2 ± 0.1b,d

MA-g3pd2-1

8.9 ± 0.7b,c

1.5 ± 0.1b

45 ± 2.4b

4.5 ± 0.3b,d

1.4 ± 0.1b

MA-g3pd2-2

8.7 ± 0.3b,c

1.5 ± 0.1b

45.3 ± 2.1b

4.6 ± 0.2b,d

1.4 ± 0.1b

MA-g3pd2-3

8.4 ± 0.5b,c

1.3 ± 0.1b

41.8 ± 2.6b

4.2 ± 0.3b

1.3 ± 0.1b

MA-g3pd3-1

8.6 ± 0.7b,c

1.3 ± 0.1b

41.7 ± 3.4b

4 ± 0.3b

1.2 ± 0.1b,d

MA-g3pd3-2

8.8 ± 0.4b,c

1.4 ± 0.1b

43.9 ± 4.1b

4.3 ± 0.2b

1.3 ± 0.1b

MA-g3pd3-3

8.8 ± 0.7b,c

1.4 ± 0.1b

44.5 ± 3.1b

4.3 ± 0.3b

1.3 ± 0.1b

  1. M. alpina: wild type M. alpina; MA-gk-1, MA-gk-2 and MA-gk-3: GK overexpressing strains; MA-g3pd1-1, MA-g3pd1-2 and MA-g3pd1-3: G3PD1 overexpressing strains; MA-g3pd2-1, MA-g3pd2-2 and MA-g3pd2-3: G3PD2 overexpressing strains; MA-g3pd3-1, MA-g3pd3-2 and MA-g3pd3-3: G3PD3 overexpressing strains. a,b,c,d Mean the values within a row with different superscript letters were significantly different (p < 0.05) as analyzed by ANOVA. * Cultured with glucose as carbon source