Effect of simple shear flow on photosynthesis rate and morphology of micro algae

S. Mitsuhashi*, M. Fujimoto, H. Muramatsu, K. Tanishita

*この研究の対応する著者

研究成果: Article査読

2 被引用数 (Scopus)

抄録

The convective motion of micro algal suspension gives an advantageous effect on the photosynthetic rate in the bioreactor, however, the nature of convective effect on the photosynthesis has not been fully understood. The propose of this study concerns the nature of photosynthetic rate in a well-defined hydrodynamic shear flow of Spirulina platensis suspension, generated in a double rotating coaxial cylinders. The double rotating coaxial cylinders was installed in the incubator chamber with the controlled illumination intensity and temperature. Two kind of experiments, short and long term experiments, were performed to evaluate the direct effect of shear flow on the photosynthetic rate. The short term experiment indicates that the simple shear flow enables to augment the photosynthesis of Spirulina suspension and simultaneously causes the cell destruction due to the excessive shear stress. The long term experiment for 100 hours reveals that the growth rate and the morphology of Spirulina is sensitive to the external fluid mechanical stimulus. The long term application of mechanical stress on the algae may result in the adaptation of the photosynthetic function and morphology.

本文言語English
ページ(範囲)179-187
ページ数9
ジャーナルActa Astronautica
33
C
DOI
出版ステータスPublished - 1994
外部発表はい

ASJC Scopus subject areas

  • 航空宇宙工学

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