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A gc-ei/ms analysis method for volatile components of juniper

A volatile component, GC-EI technology, applied in the field of juniper, can solve the problems of insufficient chemical composition analysis of juniper, loss of analytes, complicated operation, etc., to achieve the effect of high sensitivity, simple operation and accurate analysis results

Active Publication Date: 2019-12-17
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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  • A gc-ei/ms analysis method for volatile components of juniper
  • A gc-ei/ms analysis method for volatile components of juniper
  • A gc-ei/ms analysis method for volatile components of juniper

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Embodiment Construction

[0027] Material: A century-old or thousand-year juniper from the Wuyishan Mountains.

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

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

[0030] GC-EI / MS analysis of volatile components of Juniper:

[0031] (1) Extraction and purification. The juniper sample is powdered with a mixer, 1.0g of the sample is weighed into a 25mL headspace bottle, and 10mL of n-hexane-acetone (1:1, volume ratio) mixed extractant is added and soaked for 30 minutes Then seal the headspace bottle, place it on a heating and stirring instrument to heat it to a temperature of 60 degrees, insert it into the SPME column, and measure after 15 minutes of equilibration;

[0032] (2) Analysis and determination. The sample after step (1) is pretreated by headspace solid phase microext...

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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 with 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, arthritis and so on. At the same time, juniper also contains aromatic oil, so its aroma components can be used as flavoring raw materials, and its aromatic components are also used to produce gin, cosmetics and enhance the taste and aroma of beverages [1-3] . [0003] Although the chemical composition of other species of Juniper has been studied in depth, the analysis of the chemical composition of Juniper is far from enough, and there is no more mature analysis method for the volatile components of Juniper. GC-EI / MS is usually used to analyze aroma substances, but b...

Claims

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Application Information

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Patent Type & Authority Patents(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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