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Table 1 Kinetic analysis of the wild-type and FO strains under oxic or anoxic conditions

From: Biohydrogen production of obligate anaerobic archaeon Thermococcus onnurineus NA1 under oxic conditions via overexpression of frhAGB-encoding hydrogenase genes

Kinetic parameter

Wild type

FOb

Anoxica

Oxic

Anoxic

Oxic

μmax (h−1)

0.3

ND

0.60 ± 0.08

0.60 ± 0.02

rmax (mmol L−1 h−1)

31.7

ND

118.5 ± 3.9

101.7 ± 16.6

qmax (mmol g−1 h−1)

198.2

ND

364.8 ± 8.1

323.3 ± 54.5

  1. μmax maximum specific growth rate, rmax maximum H2 production rate, qmax maximum specific H2 production rate, ND growth and H2 production were not detected
  2. aThe data on the kinetic parameters of the wild-type strain under anoxic conditions were adapted from a previous study [23]
  3. bThe values for the FO strain show mean ± standard deviation for three independent cultures in this study