Effects of temperature and light on content of polysaccharides and activity of SOD in Spirulina Maxima

The effects of temperature and illumination on polysaccharides and SOD activity in Spirulina Maxima were studied.The results showed that:illumination and temperature that unsuitable for the growth of Spirulina Maxima would raise extracellular polysaccharide content and SOD activity.In particular,high temperature and feeble illumination were favorable to the excreting of extracellular polysaccharide.SOD activity was increased notably under low temperature and strong light.The optimum temperature and light for excreting of intracellular polysaccharides were consistent with optimum condition for the growth of Spirulina Maxima.The results provided the theory and practical parameters of scale-up exploitation in the functional food and pharmacy.