不同磁处理方式对小球藻生长的影响

目的：利用恒定均匀磁场研究了不同磁处理方式和磁感应强度对小球藻生长的影响，探索磁处理技术应用于微藻培养的可能。方法：用t检验考察静止磁处理、循环磁处理和磁处理水三种不同的磁处理方式对小球藻生长的影响。结果：静止磁处理和循环磁处理分别在5．15mT和10．35mT范围促进小球藻生长，并且随磁感应强度增强分别从45mT与200mT开始表现出显著抑制生长作用．相同的磁感应强度下静止磁处理比循环磁处理的影响显著。未发现磁处理水对小球藻的生长有显著影响。结论：不同的磁处理方式对小球藻生长有不同的刺激与抑制的强度闽值；0．8T和1．2T磁感应强度处理下比生长速率下降的差别并不明显，说明磁处理的影响在此强度范围趋于稳定；磁处理水无显著影响说明磁场直接对小球藻细胞产生影响。

Growth of Chlorella Vulgaris Under Different Magnetic Treatments

Objective: To investigate the effects of different magnetic treatments for the growth of Chlorella vulgaris by constant and uniform magnetic field and develop a magnetic treatment technology for the cultivation of microalgea. Methods: Magnetized water treatment, static and circular magnetic treatment were applied to study the influences on growth of C. vulgaris and the results of the three methods were analyzed by t-test. Results: The growth of C. vulgaris was stimulated at range of 5-15mT and 10-35mT for static and circular magnetic treatment respectively, and was inhibited remarkably from 45mT and 200mT . respectively with the increasing of magnetic intensity. Static magnetic treatment was more effective than circular magnetic treatment at same magnetic intensity. No remarkable effect on growth of C. vulgaris was found with magnetized water. Conclusion: Different magnetic treatments show different intensity threshold values of stimulation inhibition for the growth of Chlorella vulgaris .There was no distinct difference between the decrease of growth at magnetic intensity from 0.8T to 1.2T, which tended towards stability. Magnetized water has no effect on the growth of Chlorella vulgaris, on which ,magnetic field directly influenced.