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Detection method for hydrogen sulfide in grape wine

A detection method, wine technology, applied in the field of detection of hydrogen sulfide in wine, can solve the problem of small results and achieve fast analysis speed, simple operation and high stability

Inactive Publication Date: 2015-12-02
DONGCHEN LEADER TESTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, hydrogen sulfide is blown out by nitrogen from the wine, and there is still a relative balance between the gas phases, so the test results are often too small

Method used

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  • Detection method for hydrogen sulfide in grape wine

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The detection method of hydrogen sulfide in wine comprises the following steps:

[0019] Step 1, take a wine sample, add methyl orange indicator, and let stand;

[0020] Step 2, using nitrogen as a carrier gas, filling the wine sample in step 1 to extract hydrogen sulfide gas;

[0021] Step 3, introducing the hydrogen sulfide gas taken out in step 2 into the absorption liquid, adding p-amino N,N-dimethylaniline solution and ferric amine sulfate solution, and standing;

[0022] Step 4, using distilled water as a control, measure the absorbance of the sample obtained in step 3 at 670 nm.

[0023] In step 1, the wine sample dosage is 50mL, and the methyl orange indicator dosage is 0.2mL.

[0024] In step 2, the temperature of the sample was controlled in a 60°C water bath, and the extraction time was 20 minutes.

[0025] The absorption solution in step 3 is an aqueous solution of vitamin C, glycine, calcium oxalate, sodium persulfate, butyl acetate, dimethylformamide, a...

Embodiment 2

[0029] The detection method of hydrogen sulfide in wine comprises the following steps:

[0030] Step 1, take a wine sample, add methyl orange indicator, and let stand;

[0031] Step 2, using nitrogen as a carrier gas, filling the wine sample in step 1 to extract hydrogen sulfide gas;

[0032] Step 3, introducing the hydrogen sulfide gas taken out in step 2 into the absorption liquid, adding p-amino N,N-dimethylaniline solution and ferric amine sulfate solution, and standing;

[0033] Step 4, using distilled water as a control, measure the absorbance of the sample obtained in step 3 at 670 nm.

[0034] In step 1, the wine sample dosage is 80mL, and the methyl orange indicator dosage is 0.3mL.

[0035] In step 2, the temperature of the sample was controlled in a 75°C water bath, and the extraction time was 35 minutes.

[0036] The absorption solution in step 3 is an aqueous solution of vitamin C, glycine, calcium oxalate, sodium persulfate, butyl acetate, dimethylformamide, a...

Embodiment 3

[0040] The detection method of hydrogen sulfide in wine comprises the following steps:

[0041] Step 1, take a wine sample, add methyl orange indicator, and let stand;

[0042] Step 2, using nitrogen as a carrier gas, filling the wine sample in step 1 to extract hydrogen sulfide gas;

[0043] Step 3, introducing the hydrogen sulfide gas taken out in step 2 into the absorption liquid, adding p-amino N,N-dimethylaniline solution and ferric amine sulfate solution, and standing;

[0044] Step 4, using distilled water as a control, measure the absorbance of the sample obtained in step 3 at 670 nm.

[0045] In step 1, the wine sample dosage is 100mL, and the methyl orange indicator dosage is 0.4mL.

[0046] In step 2, the temperature of the sample was controlled in an 80°C water bath, and the extraction time was 50 minutes.

[0047] The absorption solution in step 3 is an aqueous solution of vitamin C, glycine, calcium oxalate, sodium persulfate, butyl acetate, dimethylformamide,...

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PUM

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Abstract

The present invention discloses a detection method for hydrogen sulfide in a grape wine. The detection method comprises: taking a grape wine sample, adding a methyl orange indicator, and standing; adopting nitrogen as a carrier gas, introducing into the grape wine sample, and extracting hydrogen sulfide gas; importing the carried hydrogen sulfide gas into an absorption liquid, adding a N,N-dimethyl-1,4-phenylenediamine solution and an ammonium ferric sulfate solution, and standing; and finally determining the absorbance of the obtained sample at 670 nm by adopting distilled water as the control. According to the present invention, the detection method has characteristics of simple operation, less interference, high stability and rapid analysis, and is suitable for rapid hydrogen sulfide detection in grape wine companies.

Description

technical field [0001] The invention belongs to the technical field of food analysis, in particular to a method for detecting hydrogen sulfide in wine. Background technique [0002] In the winemaking process, in addition to the sulfur provided by the sulfate radicals in the grapes and grape juice itself, a certain amount of sulfur dioxide must be added to inhibit the contamination of bacteria. In the later bottle storage and aging process, due to the strong reducing effect of the wine itself, some sulfides are transformed into hydrogen sulfide and mercaptans. Hydrogen sulfide has an extremely unpleasant smell, which is usually described as rotten eggs, garlic, onions The threshold value in wine is very low, and the literature report is 0.1mg / L or lower concentration. Hydrogen sulfide can destroy the aroma of wine and have a great adverse effect on wine flavor. Therefore, it is very important to monitor the production and content of hydrogen sulfide in wine production and qu...

Claims

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Application Information

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IPC IPC(8): G01N21/31
Inventor 熊开胜张海防谢建庭
Owner DONGCHEN LEADER TESTING
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