Identification method:
Distinguish the black wolfberry from the taste first. Authentic black wolfberry is slightly sweet and astringent. As shown in the figure:
It is also important to distinguish the shape when choosing black wolfberry. You should look at the general shape of the black wolfberry of the merchant. If the black wolfberry that has not passed the examination and approval is like this, it should be genuine. As shown in the figure:
The main variety of counterfeit Lycium barbarum in the market is Nitraria tangutorum, but this Nitraria tangutorum is mononuclear, and it is not blue-purple like Lycium barbarum and tastes bitter, so we must pay attention to it when distinguishing it. As shown in the figure:
We can identify Lycium barbarum by its taste. For example, the dyed black wolfberry looks very close and almost unrecognizable, but the taste is different. Dyed black wolfberry tastes bitter, while real black wolfberry is sweet but natural. As shown in the figure:
You can try soaking in water, because after soaking in water, with the release of anthocyanins, the color of black wolfberry gradually fades, and after a long time, you will find that black wolfberry will become a blue-white translucent color. As shown in the figure:
You can also use different water quality to judge the authenticity of Lycium barbarum. The method is relatively simple, because the anthocyanins in Lycium barbarum are very interesting. If soaked in tap water, it will be light blue, and soaked in pure water, it will be purple, but with the increase of soaking time, the difference will gradually decrease.
Black Lycium barbarum bubble method:
Wash the cup and pour water: pour 400ml boiling water or cold water below 60 degrees.
Put in black wolfberry: put 2g (about 30 capsules) of black wolfberry directly into the water.
Let it stand and drink: watch the release of anthocyanins from Lycium barbarum, the color is getting darker and darker, which is pleasing to the eye.
Repeated brewing: every time the water reaches 1/3, you can add drinking water to brew until there is no color.
Note: Black Lycium barbarum has different colors due to different water quality. Because Lycium barbarum anthocyanin is a water-soluble pigment, it is particularly sensitive to pH, and different colors can be changed with acidic water. In acidic water, it is purple (such as purple, purplish red, iron red, etc. ). In alkaline water, it is blue (such as blue, turquoise, lake blue, etc.). ). Generally, drinking mineral water is purple, and drinking tap water at home is blue.