论文标题
通过脉冲光增强藻类光合光子光子效率
Enhanced Algal Photosynthetic Photon Efficiency by Pulsed Light
论文作者
论文摘要
我们提出了实验结果，表明，相对于连续照明，可以通过明智地应用脉冲光的实用性来实现藻类光合成的光子光子合成的光子效率增加3-10倍（例如，平均峰值太阳光子通量）。我们还提出了一个可以说明所有测量结果的简单模型。该模型（1）反映了生物生产力中的基本限制元素，（2）结合了光子到达时间统计的影响，并且（3）说明了光子效率的增强如何取决于光脉冲和光子通量密度的时间表。关键是通过正确定时藻类细胞所经历的光黑暗周期来避免光合途径堵塞。我们展示了如何通过脉冲光源来实现，或通过在薄光光质量反应器中致密藻类培养物中的湍流混合而产生脉冲光的效果。
We present experimental results demonstrating that, relative to continuous illumination, an increase of a factor of 3-10 in the photon efficiency of algal photo-synthesis is attainable via the judicious application of pulsed light for light intensities of practical interest (e.g., average-to-peak solar photon flux). We also propose a simple model that can account for all the measurements. The model (1) reflects the essential rate-limiting elements in bio-productivity, (2) incorporates the impact of photon arrival-time statistics and (3) accounts for how the enhancement in photon efficiency depends on the timescales of light pulsing and photon flux density. The key is avoiding clogging of the photosynthetic pathway by properly timing the light-dark cycles experienced by algal cells. We show how this can be realized with pulsed light sources, or by producing pulsed-light effects from continuous illumination via turbulent mixing in dense algal cultures in thin photo-bioreactors.
