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Identification method of nitrogen-containing compounds in Maotai

A nitrogen compound and identification method technology, applied in the field of analysis and detection, can solve the problems of inaccurate composition and content of nitrogen-containing compounds, and achieve the effects of meeting the needs of rapid detection, simple operation and wide applicability

Inactive Publication Date: 2016-10-12
SHANGHAI INST OF TECH
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Problems solved by technology

[0004] Aiming at the above-mentioned technical problems in the prior art, the present invention provides a kind of identification method of nitrogen-containing compound in Moutai liquor, and described this method will solve the problem of determining the composition and content of nitrogen-containing compound in Moutai liquor in the prior art. accurate technical questions

Method used

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  • Identification method of nitrogen-containing compounds in Maotai
  • Identification method of nitrogen-containing compounds in Maotai
  • Identification method of nitrogen-containing compounds in Maotai

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Embodiment 1

[0019] This method mainly adopts headspace solid-phase microextraction combined with gas chromatography-nitrogen-phosphorus detector-mass spectrometry to rapidly detect and qualitatively quantify nitrogen-containing compounds in Moutai liquor. The specific steps are as follows:

[0020] 1) Extraction of nitrogen-containing compounds in Moutai liquor: First prepare a Moutai liquor sample, first dilute it with deionized water to a solution system with an alcohol content of 10%, then take 5 mL of the liquor sample, add 1 g of sodium chloride, 20 μL of 2-methoxyl 3-methylpyrazine was placed in a 20 mL headspace vial, and the headspace vial was sealed with a silicone gasket. The SPME conditions were as follows: insert the extraction head into the headspace vial, make the extraction head 2 cm above the sample, and use a constant temperature water bath. At a temperature of 50 °C, extract for 45 minutes; after the extraction is completed, quickly insert the extraction head into the inj...

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Abstract

The invention provides a method for identifying nitrogen-containing compounds in Moutai, which belongs to the technical field of analysis and detection, and includes a step of extracting nitrogen-containing compounds in Moutai; a method for detecting and analyzing the nitrogen-containing compounds in Moutai; The steps of qualitative and quantitative analysis of the nitrogen-containing compounds in the above obtained Moutai liquor. The present invention uses headspace solid-phase microextraction combined with gas chromatography-nitrogen and phosphorus detector-mass spectrometry to analyze nitrogen-containing compounds in Moutai liquor samples, forming a set of qualitative and quantitative analysis methods for nitrogen-containing compounds in Moutai liquor. Simple, easy to implement, and widely applicable.

Description

technical field [0001] The invention belongs to the technical field of analysis and detection, and relates to a method for analyzing nitrogen-containing compounds in wine, in particular to a method for identifying nitrogen-containing compounds in Moutai liquor. Background technique [0002] Moutai is my country's national liquor. Its production technology is relatively unique. It has the process characteristics of high temperature koji making, high temperature accumulation, high temperature fermentation, high temperature distillation, and long-term storage. Eight rounds of fermentation, seven times of steaming, long-term aging, and careful blending. The wine has the characteristics of prominent sauce aroma, elegant and delicate, mellow wine body and long aftertaste, which is deeply loved by consumers. [0003] Nitrogen-containing compounds in Moutai, like other substances, are an important factor in the composition of Moutai, which determines the flavor and typicality of Mou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/88G01N30/06
CPCG01N30/88G01N30/06
Inventor 牛云蔚陈晓梅肖作兵马宁朱建才
Owner SHANGHAI INST OF TECH
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