栅藻B38营养成分分析及蛋白质营养价值评价  

Nutritional Composition and Evaluation of Protein in Green Alga Scenedesmus (Desmodesmus) armatus B38

作　　者：曹猛 王盛林 刘平怀[1] 潘孝妍 王秀海 CAO Meng;WANG Shenglin;LIU Pinghuai;PAN Xiaoyan;WANG Xiuhai(Department of Materials and Chemical Engineering,Hainan University,Haikou 570228,China)

机构地区：[1]海南大学化学工程与技术学院

出　　处：《水产科学》2020年第1期103-110,共8页Fisheries Science

基　　金：国家科技型中小企业技术创新基金资助项目(13C26244604892);国家科技支撑计划项目(2011BAD14B01);海南省产学研一体化项目(CXY20150034);海南省中药现代化科技专项(ZY201327);海口市海藻生物资源研究与利用技术创新平台项目(2017044)

摘　　要：对栅藻B38的营养成分进行了全面分析,结果表明,栅藻藻粉中油脂含量14%,总糖含量13.86%,粗纤维3.52%,灰分4.28%,蛋白质49.0%,为高蛋白质类微藻。栅藻B38中含有23种脂肪酸。栅藻B38中氨基酸总量为852.58 mg/g,必需氨基酸占总氨基酸的47.45%,必需氨基酸指数为85.42%。两种模式的氨基酸比值系数分较接近,均在65以上;待评价物质的氨基酸品质与模式蛋白的贴近度接近1(0.93和0.88)。栅藻B38中共检测出23种矿物质元素,其中钠、钾、钙、镁、铁、铝含量较为丰富。重金属的含量均低于国家食品卫生标准。栅藻B38中维生素B3(106.02 mg/100 g)和维生素E(540.77 mg/100 g)的量较高。综上,栅藻B38的营养较丰富,可以进一步开发利用。The nutritional composition of green alga Scenedesmus(Desmodesmus)armatus B38 separated from tropical freshwater area in Hainan was analyzed and the protein value of the alga was assessed by essential amino acid index(EAAI),ratio of essential amino acids(AAS),ratio coefficient of amino acids(RC),score of ratio coefficient(SRC),and compactness to provide reference for the comprehensive utilization of the alga.The results showed that the green alga B38 was rich in oil(14%),carbohydrates(13.86%),fiber(3.52%),and ash(4.28%)and high in protein(49.0%).There were 23 kinds of fatty acids,with total amino acid content of 852.58 mg/g protein,47.45%of essential amino acids in the microalga B38,with EAAI of 85.42%.The two models indicated that the AAS were close to each other,both above 65,and the amino acid quality of the substance was close to 1(0.93 and 0.88)in close proximity to the model protein.A total of 23 mineral elements were detected from the microalga B38,with abundant contents of sodium,potassium,calcium,magnesium,iron and aluminum.The content of heavy metals was found to be lower than the national food hygiene standards,and the amounts of vitamin B3(106.02 mg/100 g)and vitamin E(540.77 mg/100 g)in the microalga B38 was higher,which is rich in nutrients and can be further developed and utilized.

关 键 词：栅藻B38 营养成分 营养价值评价 贴近度 

分 类 号：S963.213[农业科学—水产养殖]