Spirulina (Arthrospira platensis) is a microscopic filamentous cyanobacterium with a long history of basic and complementary alimentation. Nevertheless, a growing interest in its use in agriculture as biofertilizers and plant growth biostimulants was showed in the last years. Spirulina is commercially produced in large outdoor ponds under controlled conditions that affect both growth and biomass composition. Here, we have studied the influence of culture conditions on Spirulina growth (biomass production) and characterize the produced biomass for possible use in biopharming. The study of the effect of culture media, as well as temperature on growth and biomass composition, showed an optimal growth in temperatures at 30 and 35 °C with no difference between both tested media. The analysis of NPK content of produced biomass revealed that it contains the following: 10.9% N, 0.94% P, and 1.1 % K. In optimal growth conditions, the total biomass protein content varied from 64 to 71 %. Spirulina cells were harvested in all growth phases and analyzed for total polysaccharides (PS) in batch and continuous culture. The maximum PS production was observed during the exponential growth phase (1.5%). It was also found that the cultivation of Spirulina platensis in continuous culture increased its polysaccharide level (4.98%) compared to batch cultures.

螺旋藻(Arthrospira platensis)是一种微小的丝状蓝藻，具有悠久的基本和互补营养历史。然而，在过去几年中，人们对其在农业中作为生物肥料和植物生长生物刺激剂的使用越来越感兴趣。螺旋藻是在大型室外池塘在影响生长和生物量组成的受控条件下进行商业生产的。在这里，我们研究了培养条件对螺旋藻生长（生物质生产）的影响，并表征了可能用于生物制药的生物质。对培养基以及温度对生长和生物量组成影响的研究表明，在 30 和 35 °C 的温度下生长最佳，两种测试培养基之间没有差异。对生产的生物质 NPK 含量的分析表明，它含有以下物质：10.9% N、0.94% P、和 1.1 % K。在最佳生长条件下，总生物质蛋白质含量从 64 % 到 71 % 不等。在所有生长阶段收获螺旋藻细胞，并分析分批和连续培养中的总多糖 (PS)。在指数生长期 (1.5%) 期间观察到最大 PS 产量。还发现，培养与分批培养相比，连续培养中的钝顶螺旋藻增加了其多糖水平 (4.98%)。