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Rapid screening method for abnormal elements in Baijiu

An abnormal and elemental technology, applied in the field of rapid screening of abnormal elements in liquor, can solve problems such as turbid precipitation, liquor coloring, and degrading liquor quality

Pending Publication Date: 2020-06-19
WULIANGYE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, the content ratio of various elements also directly affects the sensory quality of liquor: an appropriate amount of metal elements can reduce the irritation of the wine, make the taste of the wine soft, and improve the quality of liquor; Salty, bitter, astringent, iron smell and other peculiar smells, or make liquor color (such as iron Fe, manganese Mn, etc.), appear turbid precipitation (such as calcium Ca, magnesium Mg, barium Ba, etc.), reduce the quality of liquor

Method used

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  • Rapid screening method for abnormal elements in Baijiu
  • Rapid screening method for abnormal elements in Baijiu
  • Rapid screening method for abnormal elements in Baijiu

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Example 1, the detection of multiple elements in a certain brand of liquor in qualified wine samples over the years

[0037]Standard wine samples: 3 qualified wine samples of a certain brand of liquor over the years (finished wines from different batches), all of which are 52% vol.

[0038] Pre-treatment (microwave digestion method): Take 10mL of liquor evenly sampled, volatilize to 4mL in an acid catcher at 65°C, add 6mL of nitric acid, cover it and leave it for 1 hour, tighten the lid tightly, and digest according to the standard operation procedure of microwave digestion instrument. After cooling, slowly open the tank cover to exhaust air, rinse the inner cover with a small amount of water, place the digestion tank on an acid catcher, heat at 65°C for 50 minutes, dilute to 25 mL with water, and mix well to obtain liquor treatment solution. At this time, the organic matter content of the wine sample should be lower than 4%. The digestion program of the microwave dige...

Embodiment 2

[0042] Example 2, Detection of multi-elements in wine sample with abnormal taste

[0043] Abnormal wine sample: 52% vol wine sample with abnormal taste.

[0044] Standard wine samples: 2 qualified wine samples of the same brand liquor over the years (finished wines from different batches) with abnormal taste, all of which are 52% vol.

[0045] Pretreatment: The above wine sample was pretreated according to the microwave digestion method in Example 1.

[0046] Detection conditions of ICP-MS (CCT collision cell mode): scanning method: full scan; forward power: 1320W; sampling depth: 187step; cooling air flow: 13.0L / min; auxiliary air flow: 0.80L / min; atomization Gas flow: 0.88L / min; CCT collision gas composition: 7%H 2 , 93% He; CCT collision gas flow: 5.95ml / min; peristaltic pump speed: 30r / min.

[0047] ICP-MS was used to test various elements in the above abnormal wine sample under full scan state, the results are shown in image 3 , Figure 4 .

[0048] Observation of ...

Embodiment 3

[0049] Example 3, Detection of multiple elements in slightly turbid wine sample 1

[0050] Abnormal wine sample: slightly turbid wine sample 1, 52% vol.

[0051] Standard wine sample: 1 slightly turbid wine sample 2 qualified wine samples of the same brand of liquor over the years (finished wines from different batches), all of which are 52% vol.

[0052] Pre-treatment (water bath evaporation): Take 10ml of liquor evenly sampled in plastic biscuits, volatilize ethanol in a water bath at 65°C, steam until only about 0.5ml of liquid remains in the plastic beaker, dilute with 5ml of nitric acid solution (1%) and shake well Then carefully transfer it to a 50ml volumetric flask, wash the plastic beaker with nitric acid solution 4 times, transfer the washing liquid to a volumetric flask, and finally dilute to 50ml with nitric acid solution.

[0053] Detection conditions of ICP-MS (CCT collision cell mode): scanning method: full scan; forward power: 1320W; sampling depth: 187step; c...

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Abstract

The invention discloses a rapid screening method for abnormal elements in Baijiu, and belongs to the technical field of chemical analysis and detection, the rapid screening method comprises the following steps: ICP-MS is adopted to respectively perform full scanning detection on a standard wine sample and an abnormal wine sample, and the abnormal elements in the abnormal wine sample can be judgedby comparing two ICP-MS spectrograms. Through screening of the method, the pollution risk of elements in the white spirit is completely avoided, and the method is particularly suitable for finding reasons of abnormal white spirit (turbidity, precipitation, obvious color, peculiar smell and the like) so as to control the quality of the white spirit leaving a factory.

Description

technical field [0001] The invention belongs to the technical field of chemical analysis and detection, and in particular relates to a rapid screening method for abnormal elements in liquor. Background technique [0002] Liquor is fermented and distilled from one or more types of grains, and various trace and trace elements may be introduced in multiple stages of production, which can not be ignored to affect the quality of liquor. On the one hand, heavy metals such as lead Pb, manganese Mn, cadmium Cd, arsenic As, barium Ba and other heavy metals directly affect human health, and the content of lead Pb is listed as a health index of the national standard of liquor. On the other hand, the content ratio of various elements also directly affects the sensory quality of liquor: an appropriate amount of metal elements can reduce the irritation of the wine, make the taste soft and improve the quality of liquor; Salty, bitter, astringent, iron fishy smell and other peculiar smells...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/62G01N1/44G01N27/626
CPCG01N27/62G01N1/44
Inventor 谢正敏乔宗伟张倩魏金萍安明哲赵东黄箭叶华夏
Owner WULIANGYE