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Method using ultra-performance convergence chromatography to fast detect chiral ethyl lactate in Baijiu

An ultra-efficient phase combination and ethyl lactate technology, applied in the detection field, can solve the problems of high toxicity and different physiological efficacy, and achieve the effect of less operation steps, good repeatability, simple and fast operation

Active Publication Date: 2016-08-24
ANHUI RUISIWEIER TECH
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Problems solved by technology

The physical and chemical properties of the enantiomers are also the same, but the most important feature is the different physiological performance, for example, L-nicotine is more toxic than D-nicotine

Method used

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  • Method using ultra-performance convergence chromatography to fast detect chiral ethyl lactate in Baijiu
  • Method using ultra-performance convergence chromatography to fast detect chiral ethyl lactate in Baijiu
  • Method using ultra-performance convergence chromatography to fast detect chiral ethyl lactate in Baijiu

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Embodiment Construction

[0043] In order to clarify the understanding of the present invention, the present invention will be further described below in conjunction with the examples.

[0044] The present embodiment detects chiral ethyl lactate in liquor according to the following steps:

[0045] The instruments used are: ultra-high performance convergence chromatography equipped with a diode array detector, ACQUITY UPC2Trefoil CEL1, 2.5μm chromatographic column (cellulose 3-(3,5-dimethylphenylcarbamate)); vortex instrument; pipette gun;

[0046] The specific steps are:

[0047] (1) Pretreatment of the liquor sample to be tested:

[0048] Pipette 5mL of the liquor sample to be tested into a 10mL colorimetric tube, add 2mL of ethyl acetate, vortex for 1min, pipette the upper layer solution to dry, use 2mL of methanol to dissolve, pour into a 2mL sample bottle, and wait for sample injection;

[0049] (2) The conditions for setting the ultra-high performance convergence chromatograph are:

[0050]Chr...

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Abstract

The invention discloses a method using ultra-performance convergence chromatography to fast detect chiral ethyl lactate in Baijiu and belongs to the technical field of detection. The method is characterized in that the chiral ethyl lactate includes L-ethyl lactate and D-ethyl lactate; a Baijiu sample is dried by blowing through nitrogen after being extracted by ethyl acetate and dissolved with methanol, a special ACQUITY UPC2Trefoil CEL1 chiral chromatographic column of 2.5 micrometers is used as the separation column, and carbon dioxide (A) plus methanol (B) are used as the flowing phase to perform gradient elution; the sample is detected by a diode array detector after being separated by ultra-performance convergence chromatography (UPC2). The method is simple and fast and capable of accurately qualitatively and quantitatively detecting the chiral ethyl lactate in Baijiu, and a scientific basis is provided for the accurate determination and fast detection of the two kinds chiral ethyl lactate in Baijiu.

Description

technical field [0001] The invention relates to the technical field of detection, in particular to a method for rapidly detecting chiral ethyl lactate (L-ethyl lactate, D-ethyl lactate) in liquor by using an ultra-high-efficiency convergence chromatography connected in series with a diode array detector , belonging to the field of analytical techniques. Background technique [0002] With the continuous development of analysis and detection technology, especially the development and application of high-performance capillary gas chromatography, liquid chromatography and gas-liquid chromatography-mass spectrometry, combined with the sensory tasting of liquor, the types and contents of the skeleton components in liquor are studied. Its compositional characteristics may gradually reveal the mystery of the "unique flavor" of various famous wines. Many researchers are trying to use the latest technology to identify trace components or even trace components in unknown liquors, so a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02
CPCG01N30/02G01N2030/027
Inventor 王银辉汤有宏刘国英沈小梅马雷
Owner ANHUI RUISIWEIER TECH
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