One is the form. Many consumers think that the whiter the China Rana, the better, or the bigger the better. In fact, China Rana chensinensis has a slight fishy smell, and its taste is very elastic, but it will be slightly yellow, not the whiter the better. On the contrary, it is possible that the white one has been bleached. Toad's ovaries are generally black, and the surface is not smooth and odorless.

This method can also be used to identify the trick of using bullfrog oil to impersonate China forest frog. Because China Rana chensinensis is a dry fat product attached to the ovary and fallopian tube of China Rana chensinensis, it looks like two small Dulu grapes strung together by a main stem, while China Rana chensinensis oil is fragmentary intestines and viscera. What is even more difficult to distinguish is that some unscrupulous merchants will take out the oviduct of toad, remove fascia and impurities, and then dry it as a China wood frog. This can only be distinguished by the shape after soaking. Authentic China Rana will not smell after soaking.

The second is to look at the impregnation ratio. Generally speaking, the swelling degree of a good China wood frog after soaking in water is 1: 55, which is false and impossible. So once soaked in water, the fake China Rana will show its true colors. In addition, the authentic snow clam cream is transparent after soaking in water, while the counterfeit one does not have this phenomenon.

The third is scale. In today's China wood frog, even the first-class product with the soaking ratio of 1:60 weighs about 6 to 7 yuan, which is about 22 grams in metric unit, and even after soaking, it is difficult to see the China wood frog particles as big as auricularia auricula. Generally speaking, a China wood frog can't be as big as a thumb. In the giant-looking China Rana, it is usually the merchants who add potions to the water for profit. For example, in Gao Jia, this cleaner, which was originally used by workers in machinery factories to clean oil stains on their hands, contains harmful substances such as borax and glycerol.

According to informed sources, the purchase price of genuine snow clam cream should reach about 10 yuan/gram, while the fallopian tube of Lycophaga is less than 10 yuan per kilogram. The difference between the two is clear at a glance. In addition, many consumers think that the whiter the snow clam cream, the better, so businesses use bleaching powder more "malicious".

If they are all authentic, how can we tell the difference between China Rana temporaria?

First, to buy China Rana chensinensis, you should choose dry Rana chensinensis, because wet Rana chensinensis is not inferior, and the price will be cheaper than dry Rana chensinensis, but its water content is as high as 20%~50%, and its medicinal value will be slightly lower than dry Rana chensinensis.

The second is to research the origin, that is, to look at the origin, we must find the northeast forest frog.

The third is to look at the appearance, with integrity and less debris as the best.

The fourth is to look at "Mao". The higher the quality of China Rana chensinensis, the higher the soaking rate. For example, some China wood frogs, which cost more than 250 yuan/pair, can reach the ratio of 1 60 after soaking. And some low-quality China wood frogs may be only fifteen cents. In addition, the good China wood frog is white in color, thick in meat, and has a faint fishy smell. The swelling degree after soaking in water is 1: 60.