Cyanobacteria can have high lipid content, are amenable to metabolic engineering, and contain valuable materials, such as ultraviolet (UV) protectants and antioxidants. Maximizing the production and harvesting of several valuable products at the same time is an important objective. UV exposure was evaluated as a strategy to induce synthesis of UV protectants, higher lipid productivity, and a high lipid-saturation index in the cyanobacterium Lyngbya purpurem UTEX LB 2716. While UVA stimulated the highest production of lipids and the largest amount of mycosporine-like amino acids (MAAs), UVB lead to greater generation of MAAs, which correlated to higher antioxidant activity. UVB also showed a shift towards saturated fatty acids, such as C16:0 and C18:0, over unsaturated fatty acids, whereas UVA showed a shift towards the unsaturated fatty acids. In summary, UVB induced the highest MAAs production, anti-oxidant activity, and lipid saturation, and its yield of crude lipids and extracted FAME was only slightly lower than with UVA.

蓝细菌可以具有高脂质含量，适合于代谢工程，并包含有价值的物质，例如紫外线（UV）防护剂和抗氧化剂。一个重要的目标是同时最大限度地提高几种珍贵产品的产量和收成。紫外线暴露被评估为诱导蓝藻Lyngbya purpurem中合成紫外线保护剂，提高脂质生产率和提高脂质饱和指数的策略。UTEX LB2716。虽然UVA刺激了脂质的最高产量和最大量的霉菌素样氨基酸（MAA）的产生，但UVB却导致了MAA的生成增多，这与更高的抗氧化活性相关。与不饱和脂肪酸相比，UVB还显示出向饱和脂肪酸（例如C16：0和C18：0）的转移，而UVA显示了向不饱和脂肪酸的转移。总之，UVB诱导了最高的MAA生成，抗氧化活性和脂质饱和度，其粗脂质和提取的FAME的收率仅略低于UVA。