Selenium accumulation, speciation, and its effect on nutritive value of Flammulina velutipes (Golden needle mushroom)

被引：63
作者：
Dong, Zhou [1 ]
Xiao, Yiqun [2 ]
Wu, Hui [1 ]
机构：
[1] South China Univ Technol, Coll Food Sci & Engn, Guangzhou 510640, Guangdong, Peoples R China
[2] Jingyihetai Qual Testing Co Ltd, Guangzhou 517000, Guangdong, Peoples R China
来源：
FOOD CHEMISTRY | 2021年 / 350卷
关键词：
Edible mushrooms; Microelement; Fruiting bodies; Selenoamino acids; Supplementation; IRON; BIOFORTIFICATION; BIOACCUMULATION; ENRICHMENT; MAGNESIUM; EXPOSURE; CALCIUM; COPPER; ZINC;
D O I：
10.1016/j.foodchem.2020.128667
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
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.
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页数：9
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