The appearance of the cottage wine

The consumption of Guangdong wine is half of that in China, and 40% of the fake wine detected is wine. What is wine or wine? Recently, the nation's first wine quality inspection center was established on the basis of the Guangdong Alcohol Testing Center. To distinguish between authenticity and quality, this is what the testing center does.

Appearance Appraisal: The process looks like wine tasting

At the Guangdong Alcohol Testing Center, you may see several sommeliers with exquisite wine glasses. They pick up cognac, whiskey, vodka, and other wines from the small window. They look, smell, and taste the wine and let it pass over the tip of the tongue. , tongue, tongue base, according to the professional terminology for wine write "color and flavor grid" tasting results. This is just one step to test the identification of the center's alcohol.

Foreign wine commissioned inspection, appearance identification is the first step. The testing center placed hundreds of bottles of colored wines, labels, paper, glass bottles, bottle caps, and wine colors, all of which are indicators of judgment. Manufacturers for counterfeiting, will also be set at the bottle cap at the Department of the specific anti-counterfeit labels, ordinary people are not easy to detect, "Shanzhai" version of a little inattentive may be "a move".

Instrument Test: Detect DNA of Wine

Then it is the "fight" of the various components of the instrument and wine. Each wine has its own specific chemical composition, and the difference in taste style also comes from this. Alcohol densitometer is used to detect the degree of alcohol. Generally, the degree of foreign wine is above 40 degrees. The national standard specifies that the deviation is 1 degree. The wine analyzer routinely detects total sugar, total acid, and dry extracts in red wine. More authoritative are gas chromatographs and ultraviolet spectrometers. They detect fingerprints for foreign wines by detecting volatile organic compounds such as alcohols, esters, aldehydes, ketones, ethers, and acids. DNA, compared with the authenticity, can measure its similarity, and more than 92% are qualified.

How to standardize? There is no standard for true or false wine

"If you haven't really gotten a drink, how could you go about identifying false ones?" This is a popular irony for the proliferation of fake wine. Judgment must know what is true and must have reference. For the testing organization, the reference substance is the real alcohol component and characteristic data accumulated over many years. Interestingly, the testing agency falsified, but can not tell the trustee what is true, "This is the secret that the testing agency can not say. There is no standard for the true and false wine." Hua Zhenxin, chief engineer of the Guangdong Alcohol Testing Center, said . Comprehensive assessment of multiple testing steps can determine whether the wine is a knockoff product.

The most authoritative of the Guangdong Wine Testing Center is the identification of brandy and whisky. Hennessy, Martell, Remy Martin, Chivas, and a range of foreign wine companies provide real wine and technical support. Guangdong Wine Testing Center has passed ten Years of accumulation, the formation of a huge database of characteristic components.

"Fake liquor is not a poison liquor." Zhao Hong, deputy director of the Guangdong Alcohol Testing Center, said that common fake wines are reduced by shoddy, such as XO cognac wines, possibly with a small amount of XO and The lower V SO P cognac blends, although not genuine, does not harm the human body.

Can the "wine age" test? For now cannot

There are "foreign objects" in the wine, and the chemical composition is either too much or too little. In addition to the cottage, there is a "nonconformity" in the alcohol testing. According to national, local or corporate standards, the physicochemical, microbiological, and health indicators of alcohol are “checked out” for the quality of foreign wines, which is also the daily task of the testing center.

The claimed degree is inconsistent with the actual situation. Luzhou-flavor liquor is not fragrant. It is an object that does not conform to the standard of esters. It is not harmful to the human body but it is a common wine quality loophole.

Excess aldehydes, presence of heavy metals such as inorganic arsenic, lead, and domestic plasticizer scandals for white liquor. “These are not artificial additions, but rather pollution caused by the quality control of foreign wines during the processing process.” The presence of additives such as sweeteners is caused by humans.

In years 15 and 80, the “age” of alcohol is often referred to by merchants and seems to be linked to the quality of the wine. However, from an expert's point of view, the so-called vintage is only a collection of chemical substances in the testing of alcoholic beverages. It is not a project that the testing center can currently identify. “If a company has a test standard for the year, it can be identified, otherwise it cannot be determination."

How much to check the price? A bottle of about 3,000 yuan

In addition to being commissioned by daily law enforcement agencies, the Guangdong Alcohol Testing Center also accepts personal inspections. "It is better to take a bottle of original unopened wine in the same batch. After opening the bottle, it does not rule out the impact on the quality of the wine," said Zhao Hong. General testing of a bottle of wine true and false, the price of 3,000 yuan.

Identification "five steps"

Exterior. Through the paper, glass bottles, caps, security labels, color and other indicators to judge.

Sensory. The sommelier wrote down the "color, flavor and taste" tasting results for foreign wines by looking, smelling and tasting.

Refer to the national standards of local companies for physicochemical, health, and microbial indicators.

Characteristic component identification. For example, Luzhou-flavor wines have their own characteristics, and Maotai also has corresponding characteristics. This is the “unspoken secret” of testing organizations.

Fingerprint identification. The gas chromatograph and the ultraviolet spectrometer were used to detect volatile organic compounds such as alcohols, esters, aldehydes, ketones, ethers, and acids in the wine, and to draw a “fingerprint” for it, just like the DNA of the human body. More than 92% of the total similarity with the genuine product was achieved.