Table 3 Kinetics of cell growth, sugar consumption, and PHB production by C. necator strain A-04 using PPH, PCH, CAE, and CAE without N and medium

PHB substrates (g/L)

20

20

20

20

Maximum PHB concentration (g/L)

0.7 ± 0.1

2.1 ± 0.3

5.5 ± 0.1

7.7 ± 0.5

Maximum cell dry weight (g/L)

5.3 ± 0.1

6.1 ± 0.1

11.2 ± 0.1

13.6 ± 0.2

Maximum PHB content (%wt)

12.7 ± 0.6

35.6 ± 0.1

48.7 ± 0.2

60.0 ± 0.5

Specific growth rate (1/h)

0.010

0.008

0.007

0.001

Specific consumption rate (g-S_PHB/g-CDW/h)

0.019

0.030

0.042

0.015

Specific production rate (g-PHB/g-CDW/h)

0.004

0.007

0.016

0.017

\(Y_{{{X \mathord{\left/ {\vphantom {X S}} \right. \kern-0pt} S}}}\) (g-CDW/g-S_PHB)

0.43

0.25

0.09

0.31

\(Y_{{{P \mathord{\left/ {\vphantom {P S}} \right. \kern-0pt} S}}}\) (g-PHB/g-S_PHB)

0.10

0.17

0.27

0.45

Productivity (g/(L h)

0.010

0.029

0.091

0.160