中文摘要：

本文考察了维生素B12（VB12）、精氨酸（Arg）和萘乙酸（NAA）三个生长因子对螺旋藻混合营养培养的影响，并对藻体干重（DW）及藻胆蛋白（PCP）的含量进行检测。实验结果表明：VB12对螺旋藻生长以及藻胆蛋白的积累均有较大影响，NAA对螺旋藻生长影响较大，而Arg对螺旋藻中藻胆蛋白含量影响较大；在单因素实验的基础上，利用响应面法（RSM）确定三个生长因子的最佳水平：VB12、Arg和NAA水平配比为0．08、45、0．3mg／L，此时藻体干重与藻胆蛋白含量分别增加了20．2％和31．9％；以VB12、Arg和NAA为自变量，建立了藻体干重和藻胆蛋白为响应值的二次多项式数学模型。

英文摘要：

In this paper, three critical growth factors VB12, Arg and NAA are selected to research the influence for the growth of spirulina platensi, and to determine the content of DW and PCP. The resuh showed that： VB12 has more influence on spirulina growth and accumulation of phycobiliprotein, NAA has a greater impact on spirulina growth, and Arg has more greater influence on phycobiliproteins content; RSM is used to determine the optimal level of three growth factor on the basis of single factor experiment： the level ratio of VB12, Arg and NAA is 0.08, 45,0.3 mg/L, frond dry weight and phycobiliprotein content increased respectively by 20.2% and 31.9% at the time; Taking VB12, Arg and NAA as independent variables, quadratic polynomial mathematical model is built up with dry weight of algae and phyeobiliprotein as the response value.