RESUMO
Objective To search for characteristics and methods of identifying the prepared gastrodia(stir-backed with ginger juice).Methods The prepared gastrodia was systemically made in lab observed according to the methods of the Chinese Pharmacopoeia.Then found out the characteristics and the methods of identifying prepared gastrodia.The reliability of the characteristics and methods was tested and verified by identifying two batches prepared gastrodia products.Results The main macroscopic characters:It had the scent of ginger sometimes.The main characteristics of microscopic:Lots of polysaccharides,thick-walled cells,thinner-walled cells,raphides and substances from ginger,such as starch grains,scalariform vessels,fibers,oil cells,and so on.Solution of iodine reaction showed purple-brown,reddish violet.Two batches products were accurately identified.Conclusion Macroscopic characters,microscopic characters and the reaction can identify the prepared gastrodia.These methods are simple and convenient.