作　　者： ; ; ; ; ;

机构地区： 华南理工大学食品与生物工程学院

出　　处： 《华南理工大学学报（自然科学版）》 2002年第11期49-54,共6页

摘　　要： 就磁场处理技术对螺旋藻培养过程的强化进行了研究 ,发现螺旋藻的培养能明显地被适当的磁场处理所刺激 .在强度为 2 0 0～ 32 0kA/m的外加磁场作用下培养至第 6天 ,螺旋藻最大细胞干重达 2 .76 g/L ,比同等条件下的空白对照试样多 4 6 .8% ;其比生长率由 0 .4d- 1增至 0 .6d- 1,培养周期可缩短 2～ 3d .同时 ,螺旋藻中蛋白质的含量增加了 5 .2mg/ g ;氨基酸总含量 (除色氨酸外 )增加了 0 .71mg/ g ,其中必需氨基酸增加了 3.15mg/g .此外 ,微量元素Sr、Ni、Cu、Mn和Zn等均有显著增加 ,其中Sr和Ni分别增加了 2 2 .3和 5 .1倍 .文中最后讨论了磁场处理对螺旋藻培养的强化机制 ,指出这种刺激作用与磁场处理加速了螺旋藻的光合作用和强化了其营养吸收有关 . The enhancement of cultivation of Spirulina platensis with a magnetic field treatment technology was investigated. It was found that the cultivation of Spirulina platensis could be obviously promoted by a suitable magnetic field treatment. When microalgae Spirulina platensis were cultured under an extraneous magnetic field with intensity of 200～320 kA/m, the maximum dry weight of cells was 2.76 g/L on the sixth growth day, which was 46.8% more than the control. Meanwhile the specific growth rate increased from 0.4 to 0.6 d -1 , and the cultural period could be cut down for 2～3 d. At the same time, the content of proteins in Spirulina platensis increased by 5.2 mg/g, the total amino acids (except tryptophan) in Spirulina platensis increased by 0.71 mg/g, where essential amino acids increased by 3.15 mg/g. In addition, the contents of trace elements such as Sr, Ni, Cu, Mn and Zn also increased sharply, e.g., Sr and Ni were 22.3 and 5.1 times more than the controls respectively. Finally, the paper presents a brief discussion on the stimulation of magnetic field treatment of the culture of Spirulina platensis and points out that it is relative to the promotion of photosynthesis and the enhancement of nutritional assimilation.

关 键 词： 磁场处理 螺旋藻 细胞培养 强化机制 光合作用 比生长率

领　　域： [生物学] [生物学]