银耳蒂头营养成分及重金属、农残含量检测分析

    Detection and Analysis on the Content of Nutritional Components, Heavy Metal and Pesticide Residues in Tremella Stalk

    • 摘要: 银耳蒂头是银耳加工环节的一种菌渣废料,为促进银耳蒂头的合理利用,对银耳蒂头的理化成分、矿物元素、重金属含量以及部分农药残留含量进行测定。结果表明:银耳蒂头含有较多的粗蛋白、总糖等营养成分,粗蛋白含量为4.86%~5.69%,总糖含量为42.3%~53.7%;烘干后的银耳蒂头矿质元素含量十分丰富,钾含量为4 445.43~5 375.69 mg·hg-1,钙元素含量为351.89~451.76 mg·kg-1,铁元素含量为22.79~69.31 mg·kg-1,锌元素含量为120.00~225.21 mg·kg-1,铜元素含量为6.63~10.41 mg·kg-1,锰元素含量为7.90~9.96 mg·kg-1。同时,银耳蒂头污染物含量及农药残留含量均低于相关国家标准中关于食用菌干品污染物和农药的限量要求。

       

      Abstract: Tremella stalk is a kind of fungi residues in Tremella processing. In order to promote the rational utilization of tremella stalk, the content of the physical and chemical compositions, mineral elements, heavy metals and some pesticide residues in the tremella stalk were determined. The results showed that there were more nutrients such as crude protein, total sugar and so on in the tremella stalk. The content of crude protein was between 4.86%-5.69%, and the content of total sugar was between 42.3%-53.7%. Meanwhile, the content of mineral elements in the dried tremella stalk was very rich. The potassium content was 4 445.43-5 375.69 mg·hg-1, the calcium content was 351.89-451.76 mg·kg-1, the iron content was 22.79-69.31 mg·kg-1, the zinc content was 120.00-225.21 mg·kg-1, the copper content was 6.63-10.41 mg·kg-1, and the manganese content was 7.90-9.96 mg·kg-1. At the same time, the content of pollutants and pesticide residues in the tremella stalk were lower than the limit requirements on the contaminants and pesticides of dried edible fungi in the relevant national standards.

       

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