Detection and analysis method for trans-2-nonenyl aldehyde potentiality in wort

An analytical method and technology of nonenal, applied in the detection and analysis of the potential of trans-2-nonenal in wort, in the field of wort analysis, it can solve problems such as low threshold value, achieve less sample volume, high sensitivity and environmental protection good effect

Active Publication Date: 2013-06-19
广州南沙珠江啤酒有限公司 +1
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Problems solved by technology

The threshold of trans-2-nonenal is low, and trans-2-nonenal in wort is not easy to be detected

Method used

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  • Detection and analysis method for trans-2-nonenyl aldehyde potentiality in wort
  • Detection and analysis method for trans-2-nonenyl aldehyde potentiality in wort

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Embodiment Construction

[0026] A method for detecting and analyzing the potential of wort trans-2-nonenal in the embodiment of the present invention adopts the method of headspace solid phase microextraction and gas chromatography / mass spectrometry, which includes sample pretreatment, solid phase microextraction , gas chromatography / mass spectrometry, detection and other steps.

[0027] After a large number of experiments, the wort was firstly heat-treated, and the content of wort aldehydes increased significantly under the condition of high heat load, and trans-2-nonenal could be detected without adding a derivatizing agent. After wort heat treatment, combined with headspace solid-phase microextraction and gas chromatography / mass spectrometry, the effective, rapid and accurate detection of trans-2-nonenal can be realized.

[0028] Instruments and reagents:

[0029] Thermo Trace gas-mass spectrometer (Thermo Fisher Corporation, USA)

[0030] 85 μm polyacrylate (PA) extraction head (SUPELCO, USA)

...

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Abstract

The invention relates to a detection and analysis method for trans-2-nonenyl aldehyde potentiality in wort, which employs headspace solid phase micro-extraction and gas chromatography / mass spectrometry method, the method comprises the following steps: 1) sample pretreatment: placing wort in a headspace bottle for heat treatment; 2) ageing of a SPME extraction head: inserting the extraction head in a gas chromatography sample introduction for aging; 3) headspace solid phase micro-extraction: employing a solid phase extraction column to absorb a detected ingredient in upper space of the wort sample; 4) gas chromatography / mass spectrometry: editing a program, inserting the extraction head to an sample introduction port; vaporizing; introducing the ingredient from the sample introduction port to a capillary column for separating; and 5) detection: introducing the ingredient to be detected in a detector for detecting. A detection and analysis method of the present invention has the advantages of rapidity, less sample amount, accuracy, high sensitivity, no requirement of an extraction solvent and a derivative agent, no environmental pollution is generated, the environmental protection performance is good, and the detection and analysis method has no toxicity on testing staff body, and the security is high.

Description

technical field [0001] The invention relates to a wort analysis method, which belongs to the technical field of beer technology, in particular to a detection and analysis method for trans-2-nonenal potential in wort. Background technique [0002] In recent years, my country's beer production has gradually increased, and consumers have higher and higher requirements for beer quality. In order to further improve the quality of their products and improve their core competitiveness, beer companies have carried out stricter monitoring on the brewing process. Dilute aldehydes have gradually become the focus of attention. [0003] Studies have shown that trans-2-nonenal is the most important aldehyde that causes the cardboard flavor of aged beer, and the formation of trans-2-nonenal has been proved to be related to the oxidation reaction of fatty acids. In beer and wort, the important lipids are linolenic acid (C18:2) and linoleic acid (C18:3), which come from the decomposition of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02G01N30/06
Inventor 李红何熙李惠萍房慧婧涂京霞
Owner 广州南沙珠江啤酒有限公司
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