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Surface tension measurements on filamentous broths


The surface tension of microorganisms is an important parameter in biotechnological processes. In this work contact angles and surface tensions were determined for filamentous micro-organisms Streptomyces levoris and Aspergillus niger. The contact angles were 39.7° and 43.1°, and the surface tensions 59.0 mJ/m2 and 57.3 mJ/m2, respectively. The contact angles for the filamentous broths were measured with the axisymmetric drop shape analysis - contact diameter (ADSA-CD) method which is particularly well suited to rough surfaces. The contact angle results obtained were significantly larger than those earlier reported for bacteria.

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Visiting scientist from Helsinki University of Technology, Espoo, Finland.

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Kautola, H.K., Allen, D.G. Surface tension measurements on filamentous broths. Biotechnol Tech 8, 83–86 (1994).

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  • Rough Surface
  • Surface Tension
  • Contact Angle
  • Streptomyces
  • Aspergillus