Selenium accumulation, speciation, and its effect on nutritive value of Flammulina velutipes (Golden needle mushroom)
Selenium accumulation, speciation, and its effect on nutritive value of Flammulina velutipes (Golden needle mushroom)
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DOI：
10.1016/j.foodchem.2020.128667
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发表时间：
2021-03-14
期刊：
影响因子：
8.8
通讯作者：
Wu, Hui
中科院分区：
文献类型：
--
作者：
Dong, Zhou;Xiao, Yiqun;Wu, Hui
金针菇是世界上最受欢迎的食用蘑菇之一。研究了以亚硒酸盐为原料，对紫球藻子实体进行硒生物强化的方法。研究了香菇中硒的含量、分布、形态及硒对香菇生长、营养价值和矿物质积累的影响。结果表明，F. velutipes积累了近108？g/g有机硒处理下，20？g/g亚硒酸盐，占总硒的97%以上。大多数（60？74%）的硒结合蛋白质馏分，而15？21%与多糖级分结合。硒代蛋氨酸（56.8%）、硒代半胱氨酸（22.8%）和甲基硒代半胱氨酸（17.3%）是子实体中主要的有机硒化合物。硒生物强化提高了子实体的生物量，提高了多糖、蛋白质、总氨基酸、必需氨基酸和几种矿物质（包括铁、钙和铜）的含量。F.金针菇可能成为一种合适的硒补充剂。
Flammulina velutipes is one of the most popular edible mushrooms worldwide. A selenium-biofortification method for its fruiting body was developed using selenite. This study investigated the selenium content, distribution, speciation and the effect of selenium on mushroom growth, nutritive value, and mineral accumulation. Results showed that F. velutipes accumulated nearly 108 ?g/g of organic selenium under treatment with 20 ?g/g selenite, which accounts for over 97% of total selenium. Most (60?74%) of selenium combined with the protein fraction, whereas 15?21% combined with the polysaccharide fraction. Selenomethionine (56.8%), selenocysteine (22.8%), and methylselenocysteine (17.3%) were the main organic selenium compounds in the fruiting body. Selenium biofortification increased the biomass yield of fruiting body and elevated the content of polysaccharides, proteins, total amino acids, essential amino acids, and several minerals, including iron, calcium, and copper. F. velutipes might become a suitable selenium supplement.