Table 1. Specific rates of some amino acids at early idiophase in A. niger. Values were calculated from Kubicek et al. (1979), Ma et al. (1985) and Kubicek and Röhr (1986). The percentage of each aminoacid in the biomass composition (reported for Penicillium) was taken from Jorgensen et al. (1995).

Compound

Amino acid per
Biomass yield

Specific
Intracellular
Accumulation
Rate

Specific
Production Rate from Protein Hydrolysis

Specific
Excretion
Rate

Specific
Dilution
Rate by
Growth

Net Specific
Production
Rate ^(a)

nmol. g^-1

nmol. g^-1 _· h^-1

Arginine

35.40 · 10³

462

104

200

160

878

Glutamic

28.14 · 10³

566

174

21

127

668

Ornithine

11.92 · 10³

366

0

48

54

522

Glutamine

25.40 · 10³

333

32

24

114

552

Alanine

20.45 · 10³

73

108

60

92

209

GABA

4.18 · 10³

- 65

0

194

19

167

Aspartic

6.51 · 10³

109

32

18

29

153

Leucine

0.81 · 10³

23

143

3

-120

Valine

1.43 · 10³

27

132

6

-105

Glycine

5.57 · 10³

39

135

25

- 96

Treonine

2.58 · 10³

28

101

12

- 73

Isoleucine

1.60 · 10³

38

82

7

- 44

Hystidine

2.82 · 10³

- 23

43

22

13

- 44