鲜鸡肠与鸭肠、鹅肠中6种微量金属元素含量对比研究

Comparison of 6 kinds of trace metal elements in fresh chicken intestines, duck intestines and goose intestines

中文关键词:  鸡肠  鸭肠  鹅肠  金属元素  火焰原子吸收光谱法

英文关键词:chicken intestines  duck intestines  goose intestines  metal elements  flame atomic absorption spectrometry

中文摘要:

      目的 对比分析鸡肠与鸭肠和鹅肠中6种微量金属元素含量差异。方法 使用HNO3-HClO4体系消解样品, 采用火焰原子吸收光谱法对鸡肠中的Ca, Fe, Mn, Zn, Cu, Mg 6种微量金属元素进行测定。结果 方法学验证结果显示该方法的线性关系良好, 精密度、准确度和重复性良好。进一步测定了3种禽类肠组织中微量金属元素含量, 鸡肠中6种金属元素含量从高到低依次为Ca>Fe>Zn>Mg>Mn>Cu; 在鸭肠中则为Ca>Zn>Mg≈Fe>Mn>Cu; 在鹅肠中则为Ca>Fe≈Zn>Mg>Mn>Cu。3种家禽肠组织中, 鸡肠的Fe、Mn和Cu元素的含量明显高于鸭肠和鹅肠, 大约高2~4倍, 而Ca含量则远低于鸭肠和鹅肠, 仅为两者的1/5~1/7, Mg和Zn的含量在3中家禽肠组织中相近。结论 鸡肠中除Ca元素外, 其余5种元素都高于或等于鸭肠和鹅肠, 因此在作为动物性中药材使用时, 不建议用鸭肠或鹅肠代替鸡肠。

英文摘要:

      Objective To compare the difference of 6 kinds of trace metal elements content in chicken intestines, duck intestines and goose intestines. Methods The samples were digested by the complex liquid of nitric acid and perchloric acid, and the content of trace metallic elements Ca, Fe, Mn, Zn, Cu and Mg in chicken intestines was determined by flame atomic absorption spectrometry. Results The results of methodological verification showed that the method presented well linear relationship, precision, accuracy and reproducibility. The orders of 6 metal elements content in chicken intestines, duck intestines and goose intestines were Ca>Fe>Zn>Mg>Mn, Ca>Zn>Mg≈Fe>Mn>Cu and Ca>Fe≈Zn>Mg>Mn>Cu from high to low, respectively. Among the 3 kinds of poultry intestines, the contents of Fe, Mn and Cu in chicken intestines were significantly higher than those in duck intestines and goose intestines, about 2 to 4 times higher than that in duck intestines and goose intestines. However, the content of Ca in chicken intestine was much lower than that in duck intestine and goose intestine, which was only 1/5 to 1/7 of both. The contents of mg and Zn in chicken intestine were similar to those in duck intestine and goose intestine. Conclusion Except for Ca, the other five elements in chicken intestines are higher than or equal to duck intestines and goose intestines, so it is not recommended to use duck intestines or goose intestines instead of chicken intestines when used as animal traditional Chinese medicine.