Biotechnology Techniques

, Volume 13, Issue 1, pp 29–32 | Cite as

Growth characteristics of Pleurotus ostreatus in bioreactors

  • Facundo J. Márquez-rocha
  • Gricelda K. Guillén
  • José Ernesto Sánchez
  • Rafael Vázquez-duhalt
Article

Abstract

Pleurotus ostreatus was cultured in a bioreactor equipped with different impeller geometries under non-limiting nutrient conditions. With a Rushton turbine impeller the specific growth rate decreased 30% and pellet diameter was reduced 15% when the aeration rate was increased from 1 to 1.5 vvm. Agitation rate reduced the pellet diameter from 5.1 mm to 2.8 mm using 200 rpm and 400 rpm of agitation, respectively. Specific growth rates of 0.036, 0.020 and 0.041 h−1 were obtained with Roshton (disc turbine), Helical Ribbon and InterMIG impellers, respectively. Impeller geometry is important to control the pellet size and consequently growth rate of P. ostreatus.

aeration and agitation conditions impeller geometry pellet size Pleurotus ostreatus specific growth rate 

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Copyright information

© Kluwer Academic Publishers 1999

Authors and Affiliations

  • Facundo J. Márquez-rocha
    • 1
  • Gricelda K. Guillén
    • 2
  • José Ernesto Sánchez
    • 2
  • Rafael Vázquez-duhalt
    • 3
  1. 1.Centro de Investigación Científica y de Educación Superior de EnsenadaEnsenadaMéxico
  2. 2.El Colegio de la Frontera SurTapachula, ChiapasMéxico
  3. 3.Instituto de Biotecnología, UNAMCuernavacaMéxico

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