Enhancing Selenium Content and Quality of Fruiting Body of Agaricus bisporus by Nano-selenium
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Abstract:
In this study, nano-selenium with stable properties was prepared and characterized; The effects of different concentrations of nano- selenium on selenium content, water content, crude polysaccharide, total nitrogen, crude fat, crude fiber, total free amino acid, total amino acid content and average weight of single flower of Agaricus bisporus were analyzed; And the comprehensive quality of fruiting bodies of Agaricus bisporus with different concentrations of nano-selenium in the culture medium was also explored. The results showed that the content of other components increased first and then decreased with the increase of nano-selenium content in the culture medium, except that the content of water and selenium increased with the increase of nano-selenium concentration. When the amount of nano-selenium in Agaricus bisporus medium was 0.5~2.5 mg/kg, the selenium content in fruiting body of Agaricus bisporus reached 0.19~0.90 mg/kg dry matter, which was 2.38~11.25 times higher than that in the control. Cluster analysis and principal component analysis showed that the comprehensive quality of fruiting body of Agaricus bisporus was the best, the average weight of single flower reached 22.90 g, and the storage period could be prolonged for 1~2 d when the optimal addition amount of nano-selenium in the culture medium was 1.0 mg/kg. The above results can provide data support for the in-depth study of selenium-enriched Agaricus bisporus and its large-scale production.
