钝顶螺旋藻在LED光电板式光生物反应器中的培养研究

分析研究了ＬＥＤ集成光电板光辐射强度对螺旋藻生物量浓度、螺旋藻比生长速率、藻光合放氧量及藻光合色素等螺旋藻生长特性的影响，并分析了ＬＥＤ集成光电板辐射红光及红、蓝组合双波长光质与冷白荧光灯光质对藻类各有效组成部分的影响。结果表明，在光辐射强度尚未达到饱和光辐射强度之前，光辐射强度决定螺旋藻的比生长速度；超过饱和光辐射强度，光合作用产氧量趋向恒定，说明螺旋藻光合器官具有光合稳定性；与冷白荧光日光灯组相比，ＬＥＤ集成光电板射红光及红，蓝组合双波长光质非常适合螺旋藻的生长并促进细胞干重、叶绿素、藻胆蛋白的增加，在相同的光辐射强度[275.9μmol/(m^2.s)]下，采用ＬＥＤ集成光辐射板辐射单色红光与冷白荧光日光灯组相比，藻胆蛋白、藻细胞干重吸绿素a分别增加４３．３９％、９８．４０％，５１．５６３％。

THE STUDIED ON CULTURE Spirulina platensis IN THE PHOTOBIOREACTOR WITH LED ILLUMINANT PANEL

This paper analyze: (1)the effect of light intensity illuminated from LED-panels on the properties of biomass(X),specific growth rate,oxygen production rate and photosynthetic pigments of Spirulina platensis,and (2)the effect of light quality of red or red-blue illuminated from LED-panels on the active components of S. platensis. The results show that S. platensis′ s specific growth rate is determined by the light intensity illuminated from LED-panels before saturated light intensity; the oxygen production rate of S. platensis with a stabilization of photosynthetic organ trends to equilibrate once above the saturattion of light intensity;the light quality of red or red-blue illuminated from LED-panels is suitable for the growth of S.platensis, increasing the contents of its phycobiliprotein, chlorophyll and dry cells weight by 43.39％ , 51.563％ and 98.40％ respectively as compared with white cool fluorescent light at the same light intensity of 275.9μ mol/(m2· s).