葛仙米室内规模化培养、群体显微结构及营养成分分析

Mass Culture Indoors,the Structure of Colony and Analysis of Nutrient Composition of Nostoc sphaeroides

以葛仙米为材料开展室内规模化培养，在15个月的培养期间，每月可产鲜藻38．3-293．7kg，每立方米的培养体积葛仙米每月产量波动在9．58-77．45kg，高温明显降低月产量。在葛仙米的表层和内部的显微结构明显不同，藻丝的长短、排列存在明显的差异。同时以人工培养的葛仙米为材料，测定了其生化组成；结果表明：人工培养的葛仙米含16种氨基酸，蛋白质含量为29．69％；脂肪的含量为0．78％，远低于野生葛仙米中脂肪的含量；维生素的含量较低；砷、铅、汞、镉4种重金属元素含量较低，其含量符合国家食品卫生标准。

By using Nostoc sphaeroides Kuetzing as material, we studied its mass cultivation indoors, the structure and biochemical composition of the colony in this paper. During 15 months of cultivation, the biomass productivity was 38.3 - 293.7 kg （FW） every month, and in the volume of one cubic meter, the biomass productivity was 9.58 - 77.45 kg （FW） every month, and it was evidently decreased by the high temperature. The cross section of colony in N. sphaeroides showed that there was obvious difference lied in the exterior and interior structure of the colony with the diameter of 10 mm. The obvious differences also existed in the length and array of trichomes. At the same time, we measured and analysed cul- tivated N. sphaeroides＇s biochemical composition. The results show the following： in cultivated N. sphaeroides, the protein content was 29.69%, including 16 kinds of amino acid. Compared to wild N. sphaeroides, the fatty acid content was far lower, only O. 78%. The vitamin content was lower. According to national standard to food sanitation, the heavy metals content, including arsenic, plumbum, hydrargyrum, cadmium, were very low.