【摘要】 本文报道从淡水原种中分离筛选出钝顶螺旋藻Spirulina platensis的优良品系SCS的生理特性。该种经过海水驯化后,不仅能在自然海水培养基中生长,而且产量、质量和纯度等方面均明显优于在淡水中培养的同一株系。此外,还具有适应高温和强光等优越的生理特性。更多还原

【Abstract】 For developing of mass cultivation of Spirulina platensis, strain selection has attracted more and more attention. In this paper, 6 strains of S. platensis (SW1, SW2, SW3, SW4, SCS and P) are reported to be isolated and domesticted in sea-water media. These strains are quite different from each other in their physiological characteristics, e.g. optimum growth temperature, light sensitivity, content of pigments and protein, and grow ability in sea water. It was found that strain SCS was the best one among six for growing in sea water. This new strain not only can grow normally in sea water, but also enhance its biomass production obviously. Its adaptive temperature ranges from 25℃to 37℃, while the optimum temperature ranges from 30?? to 37??; The pH of media was almost maintained at 10.5 and needn’t to be adjusted. The sea water medium can be recycled, providing a economical way for mass cultivation of S. platensis.Experimental results indicated that strain SCS showed its new characteristics, in the following aspects:conditions of cultivation, morphology, protein content, resistence to the stresses and pigment composition.更多还原