There is only one type of Dendrobium. And there are more than 1000 kinds of dendrobium, but not all of them can be used as tonic. There are mostly illegal behaviors in the market to pass off Dendrobium as Dendrobium species.
The main components of dendrobium are dendrobium alkali, dendrobium polysaccharide, dendrobium amine, dendrobium alkali, etc., and one of the dendrobium is named because the skin is iron-green, due to its high content of dendrobium polysaccharide, efficacy is significant and more is regarded as the dendrobium of the best.
Extended information
1, dendrobium processed dry products called dendrobium, its medicinal ingredients are mainly dendrobium polysaccharide, dendrobium alkaloids and total amino acids. It can improve human immunity, enhance memory, supplement the five viscera deficiency, anti-aging.
2, choose the dendrobium to check its color, view its shape, smell its taste, chew its gum. The color is iron skin color for the top grade; shape rolled tightly, rolled the number of circles; dendrobium aroma heavy, chewing down the gum for the top grade. Among them, the flavor is the most important standard for evaluating Dendrobium. In addition, the unit weight of dendrobium can also see the quality of dendrobium, the heavier the unit weight of dendrobium (i.e. the heavier weighing), the better the quality.
References
The types of dendrobium on the market are difficult to distinguish between true and false, and experts teach you to screen dendrobium--People's Daily Online