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The cultivation and nutrition analysis of the blue-green alga Chroococcus minutus

HUANG Xu-xiong,HU Pan,ZHUANG Lin-chuan,NI Liang-ping(Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources,Shanghai Fisheries University,Ministry of Education,Shanghai 200090,China)  
The microalga Chroococcus minutus was cultured in laboratory with Zarrouk medium and the effect of temperature on the growth of Chroococcus minutus was studied.The results indicated that the optimum temperature for Chroococcus minutus growth is between 30 ℃-38 ℃ when a light intensity of 30 μE/M2/S-45 μE/M2/S applied.The nutrition assays showed that this alga has the characters of high protein content(61.82%),low lipid content(0.99%),simple fatty acid composition.The main parts of saturated fatty acid are palmitate(44.88%) and arachidic acid(11.47%).The most unsaturated fatty acid is 18:2n6(16.01%).The amino acid content of the algae is 564.09 mg/g.
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