GC-EI/MS (gas chromatography-electron impact ionization/mass spectrometry) analysis method for volatile components of Taiwan junipers

A technology for volatile components and analysis methods, applied in the field of juniper, can solve the problems of insufficient chemical composition analysis of juniper, loss of analytes, complicated operation, etc., and achieve the effects of high sensitivity, simple operation, and accurate analysis results.

Active Publication Date: 2017-10-10
XIAMEN UNIV
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Problems solved by technology

[0003] Although the chemical components of other species of Juniper have been deeply studied, the analysis of the chemical components of Juniper is far from enough, and there is no mature analysis method for the volatile components of Juniper
GC-EI / MS is usually used to analyze aroma substances, but due to the use of toxic organic solvents in traditional sample pretreatment methods, which are time-consuming and complicated to operate, analytes may be lost during operation [4]

Method used

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  • GC-EI/MS (gas chromatography-electron impact ionization/mass spectrometry) analysis method for volatile components of Taiwan junipers
  • GC-EI/MS (gas chromatography-electron impact ionization/mass spectrometry) analysis method for volatile components of Taiwan junipers
  • GC-EI/MS (gas chromatography-electron impact ionization/mass spectrometry) analysis method for volatile components of Taiwan junipers

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Embodiment Construction

[0027] Material: Centennial or Millennium Juniper from the Wuyi Mountains.

[0028] Reagents: n-hexane, acetone, ethanol (pesticide residue grade, Tedia, USA).

[0029] Instruments and equipment: Shimadzu GC / MS-QP2010 gas chromatography-mass spectrometry (Shimadzu Corporation); SPME (175um, CAR / PDMS); a set of heating and stirring instruments (J&KCHEMICA E01960069); thermometer.

[0030] GC-EI / MS Analysis of Juniper Volatile Components:

[0031] (1) Extraction and purification, crush the juniper sample into powder with a blender, weigh 1.0g of the sample in a 25mL headspace bottle, add 10mL of n-hexane-acetone (1:1, volume ratio) mixed extractant, soak for 30min Finally, seal the headspace bottle, place it on a heating and stirring instrument and heat it to make the temperature reach 60 degrees, insert the SPME column, and measure after equilibrating for 15 minutes;

[0032] (2) analysis and determination, the sample through step (1) is pretreated by headspace solid-phase mi...

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Abstract

The invention discloses a GC-EI/MS (gas chromatography-electron impact ionization/mass spectrometry) analysis method for volatile components of Taiwan junipers, and relates to Taiwan junipers. After a Taiwan juniper sample is crushed into powder, aroma components are trapped by head-space solid phase micro-extraction technology, qualitative analysis is performed by GC-EI/MS, and relative mass fraction of the components is determined by an area normalization method. 31 volatile components of the Taiwan junipers are totally identified and have complicated and rich chemical components. Composition of volatile substances of the Taiwan junipers can be effectively analyzed by the method, a novel method is provided for analysis of the volatile components of the Taiwan junipers, and research and further development of the Taiwan junipers can be promoted.

Description

technical field [0001] The invention relates to juniper, in particular to a GC-EI / MS analysis method for volatile components of juniper. Background technique [0002] Juniper is a unique tree species in my country, which has strong bactericidal properties and medicinal value. Its essential oil has the functions of diuresis and phlegm; juniper fruit can help digestion; juniper fruit decoction is used to treat liver disease and arthritis. At the same time, juniper also contains aromatic oils, so its aroma components can be used as flavoring materials, and its aromatic components are also used in the production of gin, cosmetics and to enhance the taste and aroma of beverages [1-3] . [0003] Although the chemical constituents of other species of Juniper have been deeply studied, the analysis of the chemical constituents of Juniper is far from enough, and there is no mature analysis method for the volatile constituents of Juniper. GC-EI / MS is usually used to analyze aroma su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02
CPCG01N30/02G01N2030/062
Inventor 邵文尧滕飞雪崔书铭彭淑女陈玉清彭雅娟
Owner XIAMEN UNIV
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