Analysis and Determination of Alkaloids in the Inedible Parts of Nelumbo nucifera Gaertn

To study the compositions of alkaloids in six inedible parts of Nelumbo nucifera Gaertn,the alkaloids of lotus leaf,lotus plumule,lotus seed pot,lotus rhizome node,lotus seed epicarp,and lotus rhizome epicarp were extracted by ethanol water and then the extracts were analysed by HPLC,respectively.Results showed that there were five kinds of akaloids in the extract of lotus plumule,and four of them were liensinine,isoliensinine,neciferine and neferine.The extracts of the other five parts had the similar compositions of alkaloids dominant by 6 to 8 kinds of alkaloids.The content of nuciferine in lotus leaf was the highest,reaching 149.64 μg/g,while the contents of liensinine,isoliensinine,and neferine in lotus plumule were the highest with 457.76,6155.85,and 1420.90 μg/g,respectively.It can be inferred that there are 5 to 8 kinds of alkaloids in the six inedible parts of Nelumbo nucifera Gaertn,thus should be well developed and utilized in production.