Method for detecting exogenously-added ethyl lactate in baijiu

A technology of ethyl lactate and liquor, applied in measuring devices, material analysis by electromagnetic means, instruments, etc., can solve the problem of high operation and maintenance costs, achieve the effect of protecting intellectual property rights and consumer interests, and standardizing development

Active Publication Date: 2016-03-23
CHINA NAT RES INST OF FOOD & FERMENTATION IND CO LTD
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Problems solved by technology

At present, there are also reports on the application of stable isotope technology in the liquor industry to identify the authenticity of products (such as paper: Isotope identification technology for solid-state liquor and solid-liquid liquor; patent: a method for identifying the authenticity of solid-state liquor), but the above-mentioned The research is mainly aimed at the detection of edible alcohol in liquor, but there is no discussion on whether there are food additives such as ethyl lactate added from outside sources in liquor, and domestic related research is still assisted by relevant databases for identification, operation and maintenance high cost

Method used

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  • Method for detecting exogenously-added ethyl lactate in baijiu
  • Method for detecting exogenously-added ethyl lactate in baijiu
  • Method for detecting exogenously-added ethyl lactate in baijiu

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] a) Obtained 11 samples of newly distilled base liquor of Luzhou-flavor liquor from a traditional solid-state craft liquor enterprise, as real samples without adding ethyl lactate from exogenous sources;

[0020] b) Purchase 4 liquor samples from the market that claim to have no exogenous ethyl lactate added;

[0021] c) Determination of δ of ethyl lactate of real samples 13 C value (denoted as δ 13 C 己 and δ 13 C 乳 );

[0022] d) Select n-propanol as the carbon isotope endogenous marker of ethyl lactate, and measure the δ of n-propanol in real samples 13 C value, denoted as δ 13 C 正丙醇 .

[0023] e) Calculate the difference and the standard deviation of the carbon isotope ratio between ethyl lactate and n-propanol respectively and the standard deviation of the difference (see Table 1). It can be seen that ethyl lactate and n-propanol δ 13 The distribution range of C difference is -10.57‰~-12.71‰;

[0024] Table 1 Liquor samples without adding ethyl lactate Δ 1...

Embodiment 2

[0031] A) select the new distilled base wine sample A that does not add ethyl lactate as reference sample;

[0032] B) the food additive ethyl lactate is added in the sample A according to the ratio of 1:9, 2:8, 4:6, 6:4 and 8:2 respectively, and 5 new craft liquors are blended;

[0033] C) measure the δ of n-propanol and ethyl lactate of sample A and 5 new technology liquors 13 C value, calculate the difference between the carbon isotope of ethyl lactate and n-propanol Δ 13 C, the results are shown in Table 3.

[0034] Table 3 Sample Descriptive Statistics

[0035]

[0036]

[0037] It can be seen from Table 3 that the carbon isotope difference Δ between ethyl lactate and n-propanol in the new craft liquor 13 C increases with the addition of ethyl lactate content, and when the addition of ethyl lactate exceeds 20%, the carbon isotope difference between ethyl lactate and n-propanol in the sample Δ 13 C deviates from Δ of liquor without ethyl lactate 13 C distribution ...

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Abstract

The invention relates to a method for detecting exogenously-added ethyl lactate in baijiu on the basis of the stable isotope technology and principle, and belongs to the technical field of baijiu authenticity identification. The method mainly comprises the following steps that 1, the carbon isotope composition of a target compound (ethyl lactate) in a real baijiu sample of one certain odor type is detected, the carbon isotope composition of a carbon isotope endogenous marker of the target compound is detected, and the average difference and standard deviation (sigma) of delta 13 C values of the target compound and the internal standard substance are determined; 2, the delta 13 C values of a target compound and an internal standard substance in a baijiu sample to be detected are detected, and the difference value delta 13 C of the sample to be detected is calculated; 3, whether the sample to be detected contains exogenously-added ethyl lactate or not is judged. By means of the stable isotope technology, the method capable of accurately detecting whether baijiu contains exogenously-added ethyl lactate or not is built.

Description

Technical field: [0001] The invention relates to a method for identifying the authenticity of liquor based on stable isotope technology, and belongs to the technical field of authenticity identification of liquor products. Background technique: [0002] Baijiu is a unique distilled liquor product in China. It is listed as the world's six famous distilled liquors together with brandy, Scotch whiskey, vodka, rum and gin. Liquor is a traditional product with a long history of the Chinese nation, and it is also an indispensable drink with profound historical and cultural heritage to meet people's continuous progress in material culture and spiritual culture. At present, the liquor industry has become an important part of my country's food industry: in 2014, the cumulative output of my country's liquor industry was 12.5713 million tons, the annual sales revenue of the liquor industry was 525.9 billion yuan, and the total profit was 69.9 billion yuan. [0003] According to the pr...

Claims

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Application Information

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IPC IPC(8): G01N27/62
Inventor 钟其顶王道兵
Owner CHINA NAT RES INST OF FOOD & FERMENTATION IND CO LTD
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