1. Look at hops. Besides alcohol and water, liquor brewed from pure grain also contains aromatic acids and ester organic compounds produced by amino acid fermentation. These organic substances are the main components of hops. Pick up a bottle of wine, shake it up and down a few times and watch hops. If hops are dense, small and uniform and last for a long time, the quality of wine is generally the same; If hops are bubbly, sparse and easy to disperse, be careful when buying.
2. By adding water to distinguish, most of the aromatic acids and esters in liquor are only soluble in alcohol and insoluble in water, which provides a theoretical basis for "water identification method". After adding half water, the water-insoluble organic matter precipitates and suspends in the black liquor. At this time, the white wine becomes turbid, forming a faint milky white, while the main component of fake wine is alcohol, and there is almost no organic matter, so the infinitely water-soluble alcohol will not become turbid if it is added with more water.
3, hand rubbing smell method: This is also a simple and practical method to identify true and false liquor. Pour a small amount of white wine into your palm, then rub your hands back and forth, quickly open your palm and smell the wine. If the wine is fragrant, refreshing, elegant and soft, then the quality of the wine must be the same; If the smell of wine is pungent, the smell is prominent and the nose is pungent, it is basically alcoholic liquor.
Anti-counterfeiting label of liquor
1, packaging and printing anti-counterfeiting: laser holographic anti-counterfeiting, laser holographic anti-counterfeiting logo is a hologram recorded with a specific pattern and text representing a certain commodity. After the wine is packed with shrink film, a string or pattern is printed on the shrink film and the bottle with laser mask aligner.
2. Telephone anti-counterfeiting: adopt the method of password anti-counterfeiting, that is, hide a group of passwords on the anti-counterfeiting label. Consumers can see this set of passwords as long as they scrape off the anti-counterfeiting label, then dial the inquiry number and enter the password, and they can immediately check with the National Network Digital Center to see if the computer voice reply is true and credible. Most liquor enterprises adopt this method.
3. Two-dimensional code anti-counterfeiting: The traceability function of two-dimensional code can generate two-dimensional code from the production date, raw materials, shelf life and origin of wine in the production process, so as to realize the verification in the production, sales and use process. When wine reaches the retail terminal market, retail customers can identify and analyze the QR code on the product packaging through the retail terminal information system.
4.RFID anti-counterfeiting: The ultimate anti-counterfeiting technology should adopt RFID and NFC contactless RFID technology, and Maotai and Wuliangye use RFID, which cannot be copied from the chip level. In addition, the chip can be written into the manufacturer's unique digital signature. Once written, the chip becomes a read-only tag, which is completely anti-counterfeiting.