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Table 1 Effect of different concentrations of molasses and glucose on PHB production by H. boliviensis

From: Improvements of poly(3-hydroxybutyrate) production in an air-lift reactor using simple production media

Carbon source

24 h

30 h

Molasses (g/L)

Glucose (g/L)

CDW (g/L)

PHB (wt%)

PHB conc. (g/L)

CDW (g/L)

PHB (wt%)

PHB conc. (g/L)

30

3.7 (± 0.6)

18.1

0.66

3.3 (± 0.5)

22.9

0.76

20

3.7 (± 0.3)

21.1

0.77

4.4 (± 0.1)

23.4

1.04

15

5

3.9 (± 0.2)

29.6

1.18

4.6 (± 0.1)

31.8

1.45

10

10

3.5 (± 0.1)

33.5

1.18

4.2 (± 0.4)

33.9

1.43

5

15

2.4 (± 0.3)

23.0

0.56

2.7 (± 0.2)

23.9

0.64

7.5

2.5

3.9 (± 0.2)

25.4

0.99

3.8 (± 0.1)

28.6

1.09

5

5

3.2 (± 0.4)

21.1

0.67

3.0 (± 0.3)

25.0

0.76

2.5

7.5

2.0 (± 0.1)

20.6

0.41

2.6 (± 0.5)

10.7

0.28

  1. All experiments were performed in flasks incubated at 35 °C and 180 rpm. Samples were taken at 24 and 30 h of cultivation. The initial monosodium glutamate concentration was 0.6% (w/v). The numbers in the brackets show the standard deviation of the average values