Estimation of the Light-dependent Specific Growth Rate of a Green Microalga Chlorella fusca var. vacuolata by a Growth Model with Arrhenius-type Light Intensity Function

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  • SEKI Hideshi
    Graduate School of Fisheries Sciences, Hokkaido University
  • SUZUKI Akira
    Graduate School of Fisheries Sciences, Hokkaido University
  • NIWA Ako
    Graduate School of Fisheries Sciences, Hokkaido University

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Other Title
  • Ａｒｒｈｅｎｉｕｓ型光強度関数を導入した増殖速度モデルによるクロレラＣｈｌｏｒｅｌｌａ　ｆｕｓｃａ　ｖａｒ．ｖａｃｕｏｌａｔａの比増殖速度の光強度依存性の予測
  • Arrheniusガタ ヒカリ キョウド カンスウ オ ドウニュウ シタ ゾウショク ソクド モデル ニ ヨル クロレラ Chlorella fusca var vacuolata ノ ヒ ゾウショク ソクド ノ ヒカリ キョウド イゾンセイ ノ ヨソク

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Description

This paper presents a model describing the light dependent growth of microalgae. This model is based on the assumption that the light intensity dependence of specific growth rate follows an Arrhenius-type relationship. The specific growth rate of microalgae is expressed as the product of an Arrhenius-type equation and the Monod equation. The model was applied to describe the photo-autotorophic growth of a green microalga Chlorella fusca var. vacuolata at different light intensities and nitrate concentrations. The model successfully described the effects of light intensity and nitrate concentration on the specific growth rate of the microalga. Our model expressed the sigmoidal light intensity dependence of specific growth rate at low light intensity.

Journal

  • Aquaculture Science

    Aquaculture Science 53 (1), 47-51, 2005

    Japanese Society for Aquaculture Science

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