Three-online analysis method for similarity of white spirits
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An analysis method and similarity technology, which is applied in the field of three-line analysis of liquor similarity, to achieve the effect of convenient quality monitoring and identification of true and false liquor
Inactive Publication Date: 2014-06-18
BEIJING CENT FOR PHYSICAL & CHEM ANALYSIS
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[0006] At present, the existing disclosed technology related to the chromatographic analysis of liquor of the present invention is: national standard GB/T1
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Embodiment 1
[0059] The Wuliangye samples are genuine (marked as Wuliangye 11, Genuine) and samples to be tested (marked as Wuliangye 12, 13, 14). Each sample was measured five times.
[0060] The test process is as follows figure 1 .
[0061] Liquor samples were analyzed by high-resolution gas chromatography (HRGC), gas chromatography / mass spectrometry (GC / MS), and comprehensive two-dimensional gas chromatography / mass spectrometry (GCxGC / qMS);
[0062] The high-resolution gas chromatography (HRGC) uses a gas chromatograph, and the high-resolution capillary column used in gas chromatography / mass spectrometry (GC / MS) is the same chromatographic column; Liquor component peak qualitative, use high-resolution gas chromatography (HRGC) to quantitatively analyze the peak integration results of liquor components, and then use the quantitative analysis results to calculate the similarity, and compare and distinguish the similarity of different batches of liquor or genuine and fake liquor . Hig...
Embodiment 2
[0087] Erguotou samples 27 (authentic), 28, and 29 samples to be tested.
[0088] Table 4: Peak and compound names
[0089] peak number
[0090] 29
[0091] Table 5: Contents of each classification group
[0092]
[0093] Table 6: Similarity of each taxonomic group
[0094]
[0095] It can be seen that if the similarity exceeds 5%, it is fake wine, and the deviation of five parallel tests is within 2%.
Embodiment 3
[0097] Jiannanchun, marked as 18 (genuine product), 19, 20 (sample to be tested).
[0098] Table 7: Peak and compound names
[0099]
[0100]
[0101] Table 8: Contents of each classification group
[0102]
[0103] The similarity results are shown in Table 9.
[0104] Table 9 Similarity of each taxonomic group
[0105]
[0106] aldehyde
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Abstract
The invention provides a three-online analysis method for the similarity of white spirits. The three-online analysis method comprises the steps of respectively carrying out high-resolution gas chromatography analysis, gas chromatography/mass spectrometry analysis and comprehensive two-dimensional gas chromatography/mass spectrometry analysis on white spirit samples; determining the natures of the peaks of components of the white spirits by means of the gas chromatography/mass spectrometry analysis; carrying out quantitative analysis on an integral result of the peaks of the components of the white spirits by a high-resolution gas chromatographic method; next, carrying out similarity calculation according to a quantitative analysis result; and carrying out similarity comparison and judgment on different batches of white spirits or true and false white spirits. The three-online analysis method for the similarity of the white spirits, provided by the invention, is used for performing separation analysis on the components of the white spirits through a high-resolution capillary gas chromatography; compared with a national standard method, the three-online analysis method has the advantages that the separated components are increased doubly and more detailed component information is provided. The reliability of the three-online analysis method is greatly superior to that of nature determination of a traditional mixed standard sample for a gas chromatography, the unique components of different kinds of white spirits can be identified, and detailed component analysis can be provided through identifying the true and false white spirits by a similarity calculation method and combining a comprehensive two-dimensional gas chromatography/mass spectrometry analysis method.
Description
technical field [0001] The invention relates to the field of wine analysis and detection, in particular to a three-line analysis method for liquor similarity. Background technique [0002] High-resolution gas chromatography (HRGC) is a physical and chemical separation detection and analysis method. It uses the difference in the distribution coefficient of each component of the mixture between the two phases in the capillary column, and the components are separated between the two phases several times under the push of the carrier gas. partition to separate components. High-resolution gas chromatography is widely used in the analysis of organic mixed components due to its high resolution efficiency, fast analysis speed and high sensitivity. [0003] Chromatography / mass spectrometry (GC / MS) is a method in which gas chromatography is used to separate mixtures and mass spectrometry is used to identify components. The high-resolution gas chromatography method is as mentioned ab...
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