禽蛋硒的含量检测及其营养特性

Determination of selenium in eggs and its nutrition

检测禽蛋硒的含量并探讨其作为硒来源或富硒食品的可能性。采用微波消解仪消解样品,氢化物发生原子荧光光谱测定禽蛋的硒含量,方法检测限为1.6μg/100 g,回收率为91.3%-104.1%,精密度为1.6%-3.8%。4种禽蛋的硒含量在13.3-23.6μg/100 g,蛋黄的硒含量在26.6-32.5μg/100 g,每种禽蛋蛋黄的硒含量约为蛋清硒含量的4倍;4种禽蛋的硒含量从大到小依次为鹅蛋、鹌鹑蛋、鸭蛋、鸡蛋;鸭蛋、鸡蛋硒的营养素参考值%均大于15%,是硒来源,或含有硒食品;鹅蛋、鹌鹑蛋硒的营养素参考值%均大于30%,是高,或富含硒的食品;4种禽蛋蛋黄的营养素参考值%均大于30%,是高,或富含硒食品。

The purpose of this article was to detect the selenium content of eggs and to explore the possibility of eggs as selenium source or selenium enriched foods. A method of hydride Generation-Atomic Fluorescence Spectrome- try（HG--AFS） for the determination of selenium in eggs was proposed. Amount of selenium in eggs was determined by HG--AFS after the samples were microwaved digestion. The detection limits of this method was 1.6 μg/100g, and the recoveries were in the range from 91.3% to 104.1% with precision （n =7） of 1.6% to 3.8%. The amount of se- lenium in eggs were in the range from 13.3 μg/100g to 23.6 μg/100g, and the amount of selenium in yolks were in the range from 26.6 μg/100g to 32.5 μg/100g. The amount of selenium in yolks was fourfold amount of selenium in albumen. The sequence of amount of selenium in four eggs was goose egg, quail egg, duck egg and hen egg. Ducks egg and hen egg with selenium Nutrition Reference Values% （ NRV% ） greater than 15% , and is a selenium source or selenium contained food. Gooses egg and quails egg were rich in selenium with selenium NRV% greater than 30%. Yolks of four eggs were all rich in selenium with NRV% greater than 30%.