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目的:分析不同产地大豆与绿豆中异黄酮及矿物质含量的变化,为人们合理选择提供实验依据。方法:采用钼酸铵分光光度法测定各产地大豆与绿豆中异黄酮的含量,原子吸收分光光度法测定其矿物质锌、铁和钙、镁、钾的含量。结果:东北、衡阳与海南大豆中异黄酮的含量分别为136.06%,99.12%和98.27%,绿豆中异黄酮的含量为0.0%,差异有统计学意义(P<0.05);大豆中矿物质锌、铁和钙、镁、钾的含量均比较高,其中海南大豆中锌、钾、镁的含量均高于东北、衡阳,而海南大豆中的铁、钙的含量均低于东北、衡阳;三地绿豆中所测的元素均低于相应地区大豆的含量,其差异均有统计学意义(P<0.05)。结论:大豆异黄酮和矿物质高于绿豆;东北大豆异黄酮高于南方,其保健功能更佳。
OBJECTIVE: To analyze the changes of isoflavones and minerals in soybean and mung bean from different habitats, and to provide an experimental basis for people to choose rationally. Methods: Ammonium molybdate spectrophotometric method was used to determine the content of isoflavones in soybean and mung bean from different producing areas. The contents of zinc, iron and calcium, magnesium, potassium in mineral were determined by atomic absorption spectrophotometry. Results: The contents of isoflavones in Northeast, Hengyang and Hainan were 136.06%, 99.12% and 98.27% respectively, while those in mung bean were 0.0% (P <0.05). The contents of mineral zinc , While the content of iron, calcium, magnesium and potassium were all higher. The contents of Zn, K and Mg in Hainan soybean were higher than those in Northeast and Hengyang, while the contents of Fe and Ca in Hainan soybeans were lower than those in Northeast and Hengyang. The measured contents of mung bean were lower than the corresponding soybean content, the differences were statistically significant (P <0.05). Conclusion: Soybean isoflavones and minerals are higher than mung bean; northeast soy isoflavones are higher than the south, and their health functions are better.