This issue is the most difficult to talk about, but it is also an important dimension that must be talked about. I can only try to use my own humble opinion to say that it is not right.
1: First of all, there is no need to talk about these kinds of remarks such as five, seven, ten years. Two points: what is the cost of warehousing? How effective is it for so long?
2: Moisture: Normal one year after the new mugwort leaves are greened (characteristic Dragon Boat Leaves) moisture is about 18-20%, after one year of storage, the moisture is about 8-10% (except for extruded bags), after two years the moisture is about 3-5% (in fact, there is no moisture, just moisture in the air) Bulk water evaporates quickly, squeeze bags evaporate slowly.
3: Color: The color of the front of mugwort leaves in a normal year should be gray-green (pay attention to the description, not pure green); The back is black and white. After three years, the bulk mugwort leaves turn earthy yellow (front side) and black on the back, must not be golden yellow, and the veins are curved; After squeezing the leaves for one year, the leaves have turned yellow (here is also divided into storage environment, dry storage or not yellow), three years absolutely golden, because high temperature and high moisture fermentation, chlorophyll accelerated transformation into also flavin (doping and deterioration process), of course, the whole tree for three years is rare (cost control decision that it is impossible to store for three years, unless it is unsold). Another point worth noting, pseudo-vintage. For example, are the 2021 Dragon Boat leaves and 2021 three-stubble leaves both aged for one year? Yes and no. However, one thing can be confirmed, the color difference is very large, the latter has not experienced high summer temperatures, so the color is turquoise.
4: Odor: If all manual intervention methods are thrown, mugwort leaves can obviously smell the strong scent of mugwort in one year; After three years, the leaf surface can no longer smell the smell, if it is not stored well, damp, and even has a musty smell (a little trick is inserted here: the surface of moldy mugwort leaves will have white spots and black features) but you can still smell mugwort when crushed by hand. The squeeze bag is more powerful, after a year, you can't smell the fragrance, that smell can't be described, if you have to say it is a very mixed smell, say the pile smell is more appropriate (children growing up in rural areas should know)
In short, the year is not easy to distinguish by appearance, and it is ultimately experienced by moxibustion. New Ash moxibustion on the fire, scalded, easy to distinguish. Chen Ai's performance does not need to be repeated. #Rural Revitalization# #Wormwood##Headline Creation Challenge# #中医养生 #
