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Table 1 Effects of nitrogen sources on DCW, total lipids, ARA yield and mycelial morphology of M. alpina

From: Enhanced arachidonic acid production using a bioreactor culture of Mortierella alpina with a combined organic nitrogen source

Nitrogen source

YE

Peptone

Soybean meal

CSL

DCW (g L−1)

13.5 ± 0.15

6.5 ± 0.35

14.2 ± 0.23

15 ± 0.14

Residual glucose (g L−1)

5.3 ± 0.28

28.1 ± 1.3

9.4 ± 0.6

0.5 ± 0.24

Lipids (g L−1)

2.8 ± 0.25

1.2 ± 0.31

2.6 ± 0.45

3.9 ± 0.26

ARA (g L−1)

1.3 ± 0.13

0.06 ± 0.15

0.9 ± 0.22

1.9 ± 0.22

Lipid/DCW (w/w,  %)

21.8 ± 0.53

16.2 ± 2.31

17.6 ± 0.42

26.4 ± 0.16

ARA/DCW (w/w,  %)

10.1 ± 0.32

0.89 ± 1.62

6.4 ± 0.16

13.1 ± 0.42

ARA/lipid (w/w,  %)

46.5 ± 0.13

5.3 ± 1.54

34.5 ± 0.12

49.1 ± 0.36

Mycelial morphology

Pellet

Filamentous

Pellet

Pellet