茶树木屑栽培的花脸香蘑营养分析及评价  

Analysis and Evaluation of Nutritional Contents in Lepista sordid Cultivated With Tea Tree Sawdust

作　　者：李慧 张秀伟 鲍菊 蔡甫格 牛力立 LI Hui;ZHANG Xiu-wei;BAO Ju;CAI Fu-ge;NIU Li-li(Anshun Academy of Agricultural Sciences,Anshun 561000,China)

机构地区：[1]安顺市农业科学院,贵州安顺561000

出　　处：《中国食用菌》2023年第1期62-67,共6页Edible Fungi of China

基　　金：贵州省基础研究项目(黔科合基础[2019] 1001号);贵州省科技支撑计划重点项目(黔科合支撑[2019] 2451-4号)。

摘　　要：使用以茶树木屑为主要基质栽培的花脸香蘑子实体作为供试样品,采用FAO/WHO模式中的氨基酸评价标准结合氨基酸比值系数法等,研究供试样品中矿物质含量、氨基酸及其营养价值等。结果表明样品中富含铁、锌、硒及各种氨基酸,其中铁含量高达388 mg·kg-1;除砷略高于食用菌砷污染物限量外,镉和铅的含量均符合限量标准;6种呈味氨基酸中鲜味氨基酸>甜味氨基酸>芳香族氨基酸;鲜味氨基酸(天冬氨酸+谷氨酸)占呈味氨基酸总含量的58.37%。进一步分析发现EAA/TAA为0.31,EAA/NEAA为0.46,均小于FAO/WHO提出的优质蛋白质标准;苏氨酸和赖氨酸相对过剩;异亮氨酸为第一限制氨基酸;样品氨基酸比值系数分为78。样品氨基酸虽与模式谱标准存在差距,但基本满足营养需求。The fruit body of Lepista sordida cultivated with main substrate of tea tree sawdust was used as the experimental samples.The FAO/WHO pattern and amino acid ratios coefficient method were used to evaluate sample from the aspects of mineral and amino acid nutrition.The results showed that the sample is rich in Fe,Zn,Se and various amino acids,of which the Fe content was as high as 388 mg·kg-1.Except for As,which was slightly higher than the limit of As contaminants in edible fungi,the contents of Cd and Pb were all within the limits of standards.Umami amino acid>sweet amino acid>aromatic amino acid among the six flavor amino acid contents.Among them,the umami amino acid(Asp+Glu)accounts for 58.37%.By further analysis showed that the value of EAA/TAA was 0.31,and the EAA/NEAA was 0.46,which were all lower than the high-quality protein standard proposed by FAO/WHO.Thr and Lys were relative excess,Ile was the first limiting amino acid of thesample,the score of ratio coefficient of amino acid in the sample was 78.Although there was a gap between the sample and the model spectrum standard of the amino acids,they met the nutritional needs basically.

关 键 词：花脸香蘑 茶树木屑 营养成分 FAO/WHO模式 氨基酸比值系数法 

分 类 号：S646.1[农业科学—蔬菜学]