Is Huoshan Dendrobium better than Yunnan Dendrobium? Let's look at a few interesting facts, Yunnan Dendrobium occupies 60% of the market share, and is the largest producing area since 2008. Huoshan is only suitable for growing dendrobium, dendrobium is grown in greenhouses, Yunnan climate is suitable for dendrobium growth, at present, wild dendrobium can be found in the wild. The new "Chinese Pharmacopoeia" included dendrobium, not included Huoshan dendrobium. Dendrobium in Yunnan is also dormant in winter.
Dendrobium on the growth of environmental requirements are very harsh, suitable growth temperature is generally between 10-35 degrees, the climate, humidity, light and other requirements are more stringent. And Yunnan's climate is suitable, the season is not too distinct, is located in the north latitude of 24 degrees, south of the south, southwestern Yunnan and southeastern Yunnan region of the average temperature of 17 degrees or so, the altitude of 800-1200 meters, more than 80% of the atmospheric temperature is suitable for planting dendrobium. I have traveled a lot of dendrobium planting in Yunnan, the growers are basically some old people at home management, in order to manage the convenience of dendrobium are open-air planting, so that there is no need to water, usually pulling grass can be. After domestication and cultivation, return to the wild environment to continue to grow, in Yunnan's unique climate, geography, to obtain the most suitable conditions for dendrobium growth and nourishment, so the dendrobium, how can it be the worst?
Polysaccharide content, according to Gong Qingfang, Zhou Hao, Wang Xingui [1] and other people's research shows that different origins of Dendrobium polysaccharide content of 25.15% ~ 36.53%; pre-column derivatization of HPLC method to determine the content of D-mannose proprietary, accurate, reproducible, different origins of Dendrobium mannose content of 18.00% ~ 32.35%; different origins of Dendrobium The content of Dendrobium maulanin in different origins ranged from 0 to 0.0043%. The contents of polysaccharides, mannose and melanoidin of Dendrobium species from different origins varied significantly, among which the germplasm from Yunnan and Zhejiang had excellent genetic basis in polysaccharides and mannose, while the content of melanoidin of Guangxi germplasm was relatively high. The full text of the paper can be viewed at Wanfang, Zhi.com, Baidu Academic and other platforms.
[1]Gong Qingfang, Zhou Hao, Wang Xingui, et al. Comparative study on the quality of Dendrobium officinale from different origins[J]. Northern Horticulture, 2013(8):162-165.
How to buy good quality dendrobium
Electing dendrobium should pay attention to a few points: one is the first smell, smell dendrobium flavor is not licorice flavor, the second is to break down the dendrobium, if the dendrobium is very easy to break is a good dendrobium, the third is to put one into the mouth to chew, good dendrobium gum a lot of mucus teeth. To mucus juice content is high, chewing up sticky mouth, sticky teeth is the best. Dendrobium with high polysaccharide content has better nourishing effect, therefore, the polysaccharide content of dendrobium should be carefully confirmed when selecting dendrobium. The medicinal part of Dendrobium is the stem, and its quality is judged by: less fiber and rich in mucus.
Huoshan Dendrobium and Huoshan Dendrobium Iron Skin should be distinguished
Huoshan Dendrobium is mainly produced in Huoshan County, Anhui Province, in the Dabie Mountainous Region, and most of it grows in the cloudy cliff cliffs between the crevices of cliffs and rocks, and on the sky-scraping ancient trees. It is the more expensive dendrobium species at present. I learned that many merchants will Huoshan greenhouse-grown dendrobium and dendrobium rice confused for Huoshan dendrobium, sold at high prices, consumers must pay attention to the purchase, Huoshan dendrobium and Huoshan rice dendrobium a word difference, indeed two very different dendrobium.
Dendrobium Huoshan stems are erect, fleshy, 3-9 cm long, tapering upward from the base upward, 3-18 mm thick above the base, unbranched, with 3-7 nodes, internodes 3-8 mm long, yellowish-green, sometimes with a light purplish-red spots, drying yellowish. Leaves leathery, 2-3 alternate in the upper part of the stem, obliquely emergent, ligulate-oblong, 9-21 centimeters long, 5-7 millimeters wide, apex obtuse and retuse, base with clasping sheaths; leaf sheaths membranous, persistent.
Dendrobium huoshanense petals ovate-oblong, usually 12-15 mm long, 6-7 mm wide, apex obtuse, with 5 veins; labellum subrhombic, length and width about equal, 1-1.5 cm, base cuneate and with a callus, slightly 3-lobed in the upper part, densely short hairs between the two sides of the lobes, dense growth of white hairs near the base; flowering period in May.