| Effects of La and Nd on the Fermentation of Alginic Acid Produced from the Strain 342 of Azotobacter Vinelandii |
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| 作者姓名： | 陈声明 贾小明 |
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| 作者单位： | Department of Environmental Sciences Zhejiang Agricultural University，Hangzhou 310029，China，Department of Environmental Sciences，Zhejiang Agricultural University，Hangzhou 310029，China |
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| 摘 要： | It is reported that fermentative liquids with various concentrations of La and Nd affect the fer-mentation of alginic acid from the strain 342 of Azotobacter vinelandii.The results are as follows:When theconcentration of La or Nd was up to 100 ppm,the cell growth is stimulated and the production of alginic acidis promoted.The La or Nd in concentration higher than 200 ppm or 150 ppm inhibits the fermentation,respectively.As the concentration range of La is 0～100 ppm or that of Nd is 0～150 ppm,the yield of fixednitrogen increases,and the ratio of c_M to c_G(c_M/c_G)decreases with the raise of the concentration of La orNd.When the concentration range of La is 100～400 ppm and that of Nd is 150～400 ppm,the conclusion iscontrary to the above mentioned result.
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Effects of La and Nd on the Fermentation of Alginic Acid Produced from the Strain 342 of Azotobacter Vinelandii |
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| Chen Sheng-Ming Jia Xiao-Ming.Effects of La and Nd on the Fermentation of Alginic Acid Produced from the Strain 342 of Azotobacter Vinelandii[J].Journal of Rare Earths,1993(4). |
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| Authors: | Chen Sheng-Ming Jia Xiao-Ming |
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| Abstract: | |
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| Keywords: | Lanthanum Neodymium Azotobacter vinelandii Alginic acid Mannuronic acid/Gluonic acid |
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