Method for identifying wine producing area based on stable isotope ratio

A stable isotope and wine technology, applied in the field of identifying the authenticity of wines in the origin, can solve the problems of lack of effective identification techniques and methods for wines of origin, unfavorable development of the wine industry and orderly competition, damage to the interests of consumers and the right to know, etc. Achieve the effect of solving the technical problems of authenticity identification of origin, promoting healthy development and safeguarding interests

Active Publication Date: 2013-03-13
CHINA NAT RES INST OF FOOD & FERMENTATION IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The national standard GB 15037 "Wine" defines the concept of wine of origin, and stipulates that "the proportion of wine made from grapes of the marked origin shall not be less than 80% (volume fraction) of the wine content" to become wine of origin. There is still a lack of effective technical means and methods for identifying wines from the place of origin. Only relying on corporate self-discipline and the existing standard management system cannot effectively regulate the market. Driven by interests, very few companies use fake and shoddy products to pretend to be high-quality wines from the place of origin to sell in the market. High profits have a great impact on the wine market, which is not conducive to the healthy development and orderly competition of my country's wine industry, and also damages the interests of consumers and the right to know

Method used

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  • Method for identifying wine producing area based on stable isotope ratio
  • Method for identifying wine producing area based on stable isotope ratio
  • Method for identifying wine producing area based on stable isotope ratio

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Ethanol δ in wine 18 O determination

[0022] a) Take the known δ 18 O's ethanol was diluted with acetone and mixed evenly before sample injection;

[0023] b) Take the wine to be tested and dilute it with acetone, mix well and wait for sample injection;

[0024] c) Determination of ethanol δ in the solution of steps a) and b) respectively as follows 18 o

[0025] The chromatographic conditions are as follows: molecular sieve capillary column (50m×0.32mm×0.45mm); carrier gas is high-purity helium (99.999%); constant flow mode (1.2mL / min); column temperature adopts temperature program: initial temperature 110 ℃, keep 1min, raise temperature to 145℃ at 5℃ / min, keep 7min; combustion tube temperature: 1030℃; cracking tube temperature: 1280℃; injection volume 1.0μL; -6 mBar, voltage 3.06KV; before sample measurement, use standard sample to calibrate the instrument;

[0026] c) Using known δ 18 O ethanol for calibration isotopic mass spectrometry reference gas CO 2 δ ...

Embodiment 2

[0028] Embodiment two: the identification example of the wine of origin

[0029] a) Collect wine samples marked with authentic origin information from Xinjiang, Shandong, Yunnan and other enterprises, including 21 wine samples from Shandong origin, 20 wine samples from Xinjiang origin, and 20 wine samples from Yunnan origin;

[0030] b) 5 wine samples purchased from the market marked as Xinjiang, Shandong, Yunnan and other places;

[0031] c) Alcohol δ in wine 18 O determination

[0032] Draw the wine sample to be tested into the sample injection vial, add acetone solution to dilute and mix well, and measure the δ of ethanol in the sample as follows 18 O, the chromatographic conditions are as follows: the chromatographic conditions are as follows: molecular sieve capillary column (50m×0.32mm×0.45mm); carrier gas is high-purity helium (99.999%); constant flow mode (1.2mL / min); column temperature adopts Temperature program: initial temperature 110°C, keep for 1min, increase t...

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Abstract

The invention relates to a method for identifying original wines based on stable isotope ratio, and belongs to the technical field of trueness identification of wines. The method mainly comprises the following steps of: (1) measuring the delta 180 of alcohol contained in a true original wine sample by adopting a gas phase chromatography / stable isotope mass spectrometry coupling technology, and establishing a delta 180 database of the true original wine sample; (2) measuring the delta 180 of the alcohol contained in a wine sample to be measured; (3) analyzing the significant difference of the delta 180 of an alcohol content contained in the wine sample to be measured and the delta 180 of the alcohol contained in the true original wines, wherein if no significant difference exists, the wine sample to be measured and the true sample are indicated to be from a same producing area, and if the significant difference exists, the wine sample to be measured and the true sample are indicated to be from different producing area. The method capable of accurately identifying the original wines, which is disclosed by the invention, is established by utilizing a stable isotope mass spectrometry technology, can be used for solving the technical problem of national original wines on market supervision and is conductive to specifying the market behaviors, protecting the benefits of consumers and legal enterprises and promoting the healthy and orderly development of a wine industry.

Description

Technical field: [0001] The present invention relates to a method for identifying the authenticity of origin wines (eg origin authenticity) based on stable isotope ratios. The invention belongs to the technical field of authenticity identification of wine products. Background technique: [0002] The quality of wine products is closely related to the origin, variety and year. During the development of wine, the place of origin has gradually become an iconic feature of its quality. [0003] Origin wine is the product of the joint action of grape raw materials, brewing technology and microorganisms in the origin, and has a unique style and typical characteristics. Famous wines in the world come from excellent wine producing areas, and the producing areas have gradually become a symbolic feature of wine quality to prevent counterfeit and shoddy products. [0004] In recent years, with the continuous growth of the wine industry, my country's wine grape production is also devel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02
Inventor 钟其顶王道兵熊正河
Owner CHINA NAT RES INST OF FOOD & FERMENTATION IND CO LTD
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