College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China; Beijing Key Laboratory of Biodiversity and Organic Farming, China Agricultural University, Beijing 100193, China.
Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China.
Food Chem. 2019 Oct 15;295:206-213. doi: 10.1016/j.foodchem.2019.05.101. Epub 2019 May 15.
Auricularia auricular could be useful as a candidate for human selenium supplementation. This study examined the effects of exogenous Se on the growth, yield, nutritive value, and mineral accumulation of A. auricular. Selenate or selenite (0.5-40.0 μg g) had no effect on mycelium morphology or the yield of fruiting bodies. In some cases, they affected the accumulation of inter-elements and significantly decreased the concentrations of copper, iron, and chromium in the Se-enriched fruiting bodies compared to that with control treatments. The polysaccharide (116.5-131.6 μg g) and protein (105.2-113.4 μg g) content in Se-enriched fruiting bodies were not significantly different from those observed in the controls (polysaccharide, 114.1 μg g; protein, 105.6 μg g). Thus, A. auricular can absorb inorganic Se from the substrate and convert it to organic Se compounds (selenocystine (≥4.1%), selenomethionine (≥91.9%), and Se-methylselenocysteine (≥2.3%)).
银耳可能是人类硒补充的候选物。本研究探讨了外源硒对银耳生长、产量、营养价值和矿物质积累的影响。亚硒酸盐或硒酸盐（0.5-40.0μg/g）对菌丝体形态或子实体产量没有影响。在某些情况下，它们会影响元素间的积累，并与对照处理相比，显著降低富硒子实体中铜、铁和铬的浓度。与对照相比（多糖，114.1μg/g；蛋白质，105.6μg/g），富硒子实体中的多糖（116.5-131.6μg/g）和蛋白质（105.2-113.4μg/g）含量没有显著差异。因此，银耳可以从基质中吸收无机硒，并将其转化为有机硒化合物（硒代半胱氨酸（≥4.1%）、硒代蛋氨酸（≥91.9%）和 Se-甲基硒代半胱氨酸（≥2.3%））。
