% IMPORTANT: The following is UTF-8 encoded.  This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.

@TECHREPORT{Memmert:845543,
      author       = {Memmert, K.},
      title        = {{K}ontinuierliche {X}ylanaseproduktion mit {B}acillus
                      amyloliquefaciens},
      volume       = {2132},
      number       = {Juel-2132},
      address      = {Jülich},
      publisher    = {Kernforschungsanlage Jülich, Verlag},
      reportid     = {FZJ-2018-02770, Juel-2132},
      series       = {Berichte der Kernforschungsanlage Jülich},
      pages        = {VII, 169 p.},
      year         = {1987},
      abstract     = {Xylanase synthesis in$\textit{Bacillus}$
                      $\textit{amyloliquefaciens}$ DSM 7 was found to be
                      constitutive but controlled by catabolite repression. This
                      control mechanism caused a declining yield in xylanase
                      production, as soon as the culture reached a steady-state
                      growth in chemostate culture. It could be shown that the
                      catabolite repression of exoenzyme synthesis could be lifted
                      and xylanase production occured, when the bacteria were
                      subject to a defined oxygen limitation. This defined oxygen
                      limitation could be reached by holding the oxygen tension
                      inside narrow limits around 0.5\% of saturation. As this
                      range of low oxygen tensions only occured in transient
                      states but never in steady states of continuous cultivation,
                      it had to be fixed by varying the fermenter's stirrer speed
                      thus changing the oxygen transfer rate by an automatic
                      control. As a redox probe generates more accurate values at
                      this range of very low oxygen tensions than a
                      polarographical oxygenelectrode, the culture's redox
                      potential was used as the control signal. Comparative
                      measurements of redox potential and oxygen tension indicated
                      that the redox potential is proportional to the logarithm of
                      the oxygen tension. Holding the redox potential and oxygen
                      tension by control within this unstable non-steady range, a
                      constant high xylanase productivity of about 1000
                      U/(g$\cdot$h) could be obtained in continuous culture.},
      cin          = {PRE-2000},
      cid          = {I:(DE-Juel1)PRE2000-20140101},
      pnm          = {899 - ohne Topic (POF3-899)},
      pid          = {G:(DE-HGF)POF3-899},
      typ          = {PUB:(DE-HGF)3 / PUB:(DE-HGF)29},
      url          = {https://juser.fz-juelich.de/record/845543},
}