硒元素在绿豆芽中的富集研究

Study on Enriching Selenium in Mung Bean

本研究根据绿豆芽的生长特点,设计出绿豆的发芽环境,同时选择不同浓度的硒溶液进行富硒试验,实验结果表明硒溶液浓度越大,豆芽生长速度就越慢,当浓度高于35ng/ml时,豆芽出现腐烂现象,而采用浓度低于20ng/ml的硒溶液淋浇时,对豆芽生长影响差异不明显。硒含量检测结果表明,与对照相比,富硒处理后的豆芽都达到了一定的富硒量。用浓度分别为20、35、50ng/ml硒溶液处理后的豆芽硒含量分别为27.03、100.7、155.6mg/kg。本实验还对不同富硒量对豆芽中SOD酶活性的影响进行了研究,结果表明豆芽的SOD酶活性先是随着硒溶液浓度的增大而增大,但硒浓度超过20ng/ml时又呈下降趋势,这说明过量的硒会抑制SOD酶活性。

Selenium is an essential microelement in human body with various important physiology functions. Various diseaseswould be caused if human body lacked Selenium. This study took the mung bean as raw material, enrich selenium in it by treatingmung bean with selenium solution of different concentrations. The results showed that the higher the selenium concentration was,the slower the mung bean grew. The bean would decay if selenium concentration was higher than 35ng/ml. Contents of seleniumin bean sprout were 27.03, 100.7, 155.6mg/kg after being treated respectively by selenium solution with different concentrationsof 20, 35, 50ng/ml. The SOD activity of bean sprout at first would increas as selenium concentrations increased, but reduced afterthe concentration of selenium solution was higher than 20ng/ml.