不同无机碳源对粉核油球藻生长的影响

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Abstract

Effects of two types of inorganic carbon sources on the growth of Pinguiococcus pyrenoidosus CCMP 2078 were investigated in this study. The results showed that the growth of P.pyrenoidosus CCMP 2078 was significantly promoted by adding appropriate amount of NaHCO₃ or CO₂, and there were significant differences among different additions of NaHCO₃. The optimal concentrations of NaHCO₃ added for one time and added equally for several times were 5 mmoL·L^-1 and 20 mmoL·L^-1, respectively. For the latter treatment, parameters of cell density, dry weight, and the specific growth rate reached to the highest value, which were 8.93×10⁶cells·mL^-1, 0.247 g·L^-1, and 0.225 d^-1, respectively. When CO₂ content was 0.5%, P. pyrenoidosus CCMP 2078 reached to the highest growth rate, and parameters of cell density, dry weight, and the specific growth rate were 3.83×10⁷cells·mL^-1, 0.42 g·L^-1, and 0.212 d^-1, respectively.

Key words： Pinguiococcus pyrenoidosus CCMP 2078 inorganic carbon sources growth

Received: 25 June 2007

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	Articles by authors
	LIU Ran
	LIU Xiao-juan
	WANG Ming
	XU Ning
	LI Ai-fen

Cite this article:

LIU Ran,LIU Xiao-juan,WANG Ming, et al. Effects of inorganic carbon sources on growth of Pinguiococcus pyrenoidosus CCMP 2078[J]. , 2007, 26(3): 227-231.

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http://www.ecolsci.com/EN/ OR http://www.ecolsci.com/EN/Y2007/V26/I3/227

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