益智不同部位不同生长期微量元素的含量测定

Determination of trace elements in different parts of Alpinia oxyphylla Miq. at different growth stages

目的测定不同部位不同生长期益智中微量元素Mg、Zn、Mn、Ca和Fe的含量,确定益智最佳采收期。方法采用原子吸收光谱法测定各元素的含量。结果讨论了不同部位不同生长期益智中Mg、Zn、Mn、Ca和Fe的含量变化并进行分析比较,益智不同部位中各微量元素的含量为果实>根茎>茎叶;益智中各微量元素含量在整个生长周期内波动,在结果第45天左右达到峰值。结论益智中Mg、Zn、Mn、Ca和Fe含量丰富,益智果实最佳采收期为结果第45天。

Objective To establish a method for determination of trace elements in different parts of Alpinia oxyphylla Miq. at different growth stages. Methods The content of Mg,Zn,Mn,Ca and Fe was determined by atomic absorption spectroscopy. Results At different growth stages,the content of trace elements in the fruit of Alpinia oxyphylla Miq. was higher than that in rhizome,stem and leaf. The content of trace elements was changed in the whole growth stage,and it reached the highest at the ripe fruit of the 45 th day. Conclusion The content of Mg,Zn,Mn,Ca and Fe are relatively high in the fruit of Alpinia oxyphylla Miq.The 40 th day was the best harvest time.