Weak alkaline water: blue (most tap water is weak alkaline and a few tap water is neutral)
Neutral water: purple (Master Kong's water costs one yuan a bottle, some places sell two yuan, and some brand mineral water is weakly alkaline)
Weakly acidic water: purplish red (white vinegar is poured into neutral water, or a few slices of lemon can also be used)
Black Lycium barbarum is put into weak alkaline water at room temperature, which is blue; Black Lycium barbarum will turn blue-green when it is put into high-temperature weak alkaline water, and it will appear yellow-brown after soaking for a period of time.
The yellow-brown reason may be that the water temperature is too high, or that the black wolfberry has been stored for too long and has expired. If you put the black wolfberry in water below 30 degrees, there will be yellow-brown bubbles, which should be that the black wolfberry has been put for too long.
Normal temperature water is generally used to test the authenticity and quality of Lycium barbarum. When Lycium barbarum is put into normal temperature water, the higher the extraction concentration, the longer the extraction time and the better the quality. If you put black Lycium barbarum into water at room temperature, if it just spreads around without drawing, it must be dyed black Lycium barbarum. ..............
If you have other intelligence problems, you can go to the black wolfberry post bar to discuss.