螺旋藻是一种螺旋状、不分枝、丝状的蓝藻，含有多种营养物质并具有一定的生

Spirulina is a spiral, unbranched, filamentous algae, and contains many nutrients have some biological activity. In recent years, many studies have confirmed that the polysaccharide contained in Spirulina, phycocyanin β- carotene and other substances with enhanced immunity, anti-oxidation, anti-tumor biological activity, spirulina demand and also exports increased year by year. Currently Spirulina companies face high costs and environmental pollution, low yield problem, a serious impediment Spirulina production and application. Spirulina in the growth process, will continue to release their various metabolic products into the environment, comprising some microalgae capable of inhibiting cell growth inhibitory factor in these metabolites. Factors Spirulina farming liquid nitrogen, carbon, heavy metals, also have an important impact on the growth of algae.

Spirulina is a spiral, non-branch, silky cyanobacteria, containing a variety of nutrients and has a certain biological activity. In recent years, many researchers have confirmed that spirulina contains polysaccharides, cyanoproteins and beta-carotene and other substances to enhance the body's immunity, antioxidant, anti-tumor and other biological activity functions, the demand and export volume of spirulina will increase year by year. At present, spirulina enterprises are faced with environmental pollution and high cost, low yield and other problems, seriously hinder the production and application of spirulina. During the growth process, spirulina continuously releases various self-metabolites to the surrounding environment, which contain certain inhibitors that inhibit the growth of microalgae cells. Nitrogen sources, carbon sources, heavy metals and other factors in spirulina culture fluid also have a very important influence on the growth of algae.

Spirulina is a kind of spiral, unbranched and filiform cyanobacteria, which contains many nutrients and has certain biological activity. In recent years, many researchers have confirmed that the polysaccharide, phycocyanin and β - carotene contained in Spirulina have the functions of enhancing immunity, anti-oxidation, anti-tumor and other biological activities, and the demand and export volume of Spirulina will increase year by year. At present, spirulina enterprises are facing the problems of environmental pollution, high cost and low output, which seriously hinder the production and application of Spirulina. In the process of growth, spirulina will continuously release a variety of its own metabolites to the surrounding environment, including some inhibitory factors that can inhibit the growth of microalgae cells. The factors of nitrogen, carbon and heavy metals in the culture liquid of Spirulina also have a very important influence on the growth of Spirulina.