Cyanobacteria are able to absorb light over a wide spectral range due to the presence of photoreceptors, making it possible to modulate the production of high-value compounds by inducing specific pathways. In order to evaluate the influence of light quality in cyanobacteria metabolism, Cyanobium sp. was grown in five different light conditions, by using low-pressure sodium vapor lamp (SOX) supplemented with low irradiances of green, red, and blue light and UV radiation compared to a control with only SOX. The effects of light supplementation on biomass productivity, photosynthetic activity, biochemical composition, and total antioxidant capacity were evaluated. No changes in biomass productivity were induced by any light supplements. The supplementation of red light triggered the production of lipids, phycocyanin, carotenoids, and total antioxidant compounds, while supplementation of green light increased the content of carbohydrates and chlorophyll a. Thus, supplementation of blue light and UV radiation showed little or no improvements to the culture, whereas under UV radiation the photosynthetic activity was reduced. Overall, Cyanobium sp. is a promising strain, mainly due to its accessibility to metabolism photoregulation as to produce various bioactive compounds.

蓝细菌由于存在光感受器而能够吸收宽光谱范围的光，从而有可能通过诱导特定途径来调节高价值化合物的产生。为了评估光质量对蓝细菌代谢的影响，Cyanobiumsp。与仅使用SOX的对照相比，通过使用低压钠蒸气灯（SOX）补充了绿色，红色和蓝色的低辐照度和UV辐射，可以在五种不同的光照条件下生长这种植物。评估了补光对生物量生产力，光合活性，生化组成和总抗氧化剂容量的影响。任何光补充剂都不会引起生物量生产力的变化。补充红光会触发脂质，藻蓝蛋白，类胡萝卜素和总抗氧化剂的产生，而补充绿光会增加碳水化合物和叶绿素a的含量。。因此，补充蓝光和紫外线辐射对培养物几乎没有或没有改善，而在紫外线辐射下，光合活性降低了。总体而言，Cyanobium sp.。是有希望的菌株，主要是由于其可进行代谢光调节以产生各种生物活性化合物。