Applied Microbiology and Biotechnology

, Volume 29, Issue 2–3, pp 239–241 | Cite as

Production of acid proteinases byHumicola lutea immobilized in polyacrylamide gel

  • P. Aleksieva
  • B. Tchorbanov
  • G. Suchodol'skaya
  • K. Koschteenko
Biotechnology Short Contribution


Fungal spores ofHumicola lutea 120–5 were entrapped in 5% polyacrylamide gel and were cultivated for 44–48 h to form a mycelial network inside the beads. A dense mycelial growth also occurred on the surface of the beads. It was possible to reuse the immobilized mycelium for production of acid proteinases in 12 different batches without loss of mechanical stability. The inoculum size should be controlled prior to its transfer into fresh production medium. Maximal enzyme production exceeding the level of free cell fermentation was registered in the fourth to seventh cycles. According to the size of the inoculum, half of the initial production rate was reached after 7–14 batches.


Fermentation Enzyme Production Mycelial Growth Production Medium Fungal Spore 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag 1988

Authors and Affiliations

  • P. Aleksieva
    • 1
  • B. Tchorbanov
    • 2
  • G. Suchodol'skaya
    • 3
  • K. Koschteenko
    • 3
  1. 1.Institute of MicrobiologyBulgarian Academy of SciencesSofiaBulgaria
  2. 2.Institute of Organic Chemistry with Centre of PhytochemistryBulgarian Academy of SciencesSofiaBulgaria
  3. 3.Institute of Physiology and Biochemistry of MicroorganismsAcademy of Sciences of the USSRPushchino na OkeUSSR

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