Journal of South China University of Technology(Natural Science Edition) ›› 2004, Vol. 32 ›› Issue (5): 47-50,55.

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Growth and Biochemical Components of Chlorella Vulgaris Under Autotrophic, Heterotrophic and Mixotrophic Cultivations

Wang Hai-ying  Guo Si-yuan  Zheng Bi-sheng  Li Cun-zhi   

  1. Research Institute of Light Industry and Chemical Engineering‚South China Univ．of Tech．，Guangzhou510640‚Guangdong‚China
  • Received:2003-10-29 Online:2004-05-20 Published:2015-09-08
  • Contact: Wang Ha- i ying （born in1974）‚female‚Ph．D．candidate‚mainly researches on microalgae biological technolo-gy． E-mail:whyzxb＠163.com
  • About author:Wang Ha- i ying （born in1974）‚female‚Ph．D．candidate‚mainly researches on microalgae biological technolo-gy．
  • Supported by:
    Supported by the Key Research Grant from Science and Technology Committee of Guangdong Province（99M01409G）

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Abstract: Investigated in this paper are the growth and biochemical components‚such as soluble protein‚soluble sugar‚chlorophyll and fatty acid composition of Chlorella vulgaris‚under autotrophic‚heterotrophic and mixotrophic cultivations．The results show that the biomass of Chlorellavulgaris under heterotrophic and mixotrophic cultivations is much higher than that under autotrophic cultivation‚that the specific growth rates are respectively2．13and3times that under autotrophic growth‚and that the growth of cells under mixotrophic cultivation is affected by illuminence‚ but the effect is not significant at the illuminances of2．5and4．0klx‚especially in the stationary phase．Compared with autotrophic growth‚the content of fat under heterotrophic cultivation obviously increases‚while the contents of
soluble protein and saccharide decrease‚ especially chlorophyll． Heterotrophic cultivation is helpful to the accumulation of linolenic acid．The adoption of light makes soluble proteins‚saccharides and chlorophyll increase under mixotrophic growth‚and the illuminence also has effect on the biochemical component of Chlorella vulgaris．

Key words:  Chlorella vulgaris, biochemical component, growth, autotrophic cultivation, heterotrophic cultivation, mixotrophic cultivation

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