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A needle trapping-gas chromatography-mass spectrometry method for the analysis of rose aroma components

A technology of gas chromatography and analysis method, which is applied in the field of needle trapping-gas chromatography-mass spectrometry to analyze the aroma components of roses, and can solve the problems of time-consuming processing and high extraction temperature

Active Publication Date: 2022-04-15
XINJIANG INST OF ECOLOGY & GEOGRAPHY CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Overcoming the shortcomings of time-consuming pre-treatment and high extraction temperature of the existing rose determination

Method used

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  • A needle trapping-gas chromatography-mass spectrometry method for the analysis of rose aroma components
  • A needle trapping-gas chromatography-mass spectrometry method for the analysis of rose aroma components
  • A needle trapping-gas chromatography-mass spectrometry method for the analysis of rose aroma components

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Analysis of dynamic needle trapping:

[0025] a. Take fresh Hetian cultivated roses and crush them, weigh 1g of the sample into a 20mL screw-top headspace bottle with a septum, add 500 microliters of saturated sodium chloride solution, and place it in a headspace heater with a constant temperature of 60°C Heat and balance for 30 minutes, insert the trapping needles coated with three kinds of adsorbents (60-80 mesh) of 2,6 diphenylfuran porous polymer resin, graphitized carbon black adsorbent and carbon molecular sieve adsorbent into the bottle. 1mm below the septum, connect the other end of the trapping needle to the portable sampler, turn on the voltage switch of the battery pack, then set the volume flow rate to 10mL / min, the volume to 20mL, and finally press the start button to enrich for 2min and enrich After collecting a volume of 20mL, remove the trapping needle and put it into the gas chromatography inlet, and analyze at a constant temperature for 4 minutes at a ...

Embodiment 2

[0035] Analysis of dynamic needle trapping:

[0036] a. Take fresh Hetian cultivated roses and crush them, weigh 1g of the sample into a 20mL screw-top headspace bottle with a septum, add 500 microliters of saturated sodium chloride solution, and put it in a headspace heater with a constant temperature of 60°C After heating and equilibrating for 30 minutes, three kinds of adsorbents coated with polydimethylsiloxane adsorbent (100-120 mesh), divinylbenzene adsorbent (80-120 mesh) and carbon molecular sieve adsorbent (60-80 mesh) will be coated. Insert the capture needle into the bottle, the needle hole is 1mm below the septum, connect the other end of the capture needle to the portable sampler, and turn on the voltage switch of the battery pack, then set the volume flow rate to 10mL / min and the volume to 20mL , and finally press the start button to enrich for 2 minutes. After enriching the volume of 20mL, remove the trapping needle and put it into the gas chromatography inlet, ...

Embodiment 3

[0046] Analysis of dynamic needle trapping:

[0047] a. Take fresh Hetian cultivated roses and crush them, weigh 1g of the sample into a 20mL screw-top headspace bottle with a septum, add 500 microliters of saturated sodium chloride solution, and put it in a headspace heater with a constant temperature of 60°C Heating and equilibrating for 30 minutes, the porous polymer resin (60-80 mesh) coated with 2,6 diphenylfuran, polydimethylsiloxane adsorbent (100-120 mesh) and carbon molecular sieve adsorbent (60-80 mesh) The capture needles of the three adsorbents were inserted into the bottle, and the needle hole was 1mm below the septum, and the other end of the capture needle was connected to the portable sampler, and the voltage switch of the battery pack was turned on, and then the volume flow rate was set to 10mL / min. Set the volume to 20mL, and finally press the start button to enrich for 2 minutes. After enriching the volume of 20mL, remove the trap needle and put it into the ...

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Abstract

The invention discloses a method for analyzing aroma components of roses using needle capture-gas chromatography-mass spectrometry. Needle trapping is an advanced solvent-free sample pretreatment technology. After placing fresh hot field roses in a headspace bottle, turn on the heating device for heating, insert the capture needle into the headspace bottle for adsorption, and then Pull out the trapping needle from the headspace bottle, and then insert it into the gas chromatography-mass spectrometry inlet for desorption, and perform qualitative analysis by gas chromatography-mass spectrometry after desorption. The invention adopts a continuous adsorption process, which can greatly improve the enrichment efficiency of the sample, overflow the volatile components in the sample from the sample, use the capture needle to capture the adsorption sample, and enter the detector for analysis after desorption, which is suitable for trace organic targets Component sampling analysis. It can enrich trace components, with high sensitivity, wide adsorption range, good reproducibility and easy operation. It can be sealed and stored after adsorption, with few by-products in the adsorption process, accurate qualitative and quantitative results, simple operation and long service life.

Description

technical field [0001] The invention relates to a needle capture-gas chromatography-mass spectrometry method for analyzing the aroma components of roses. Background technique [0002] Rose (Rosa rugosa Thunb) is a plant of the genus Rosa in the family Rosaceae. It has become the main economic crop planted in Hotan area of ​​Xinjiang and one of the characteristic products of Xinjiang. The aroma of roses is rich, pure and refreshing. The essential oil extracted from its petals is called "liquid gold" and can be widely used in food, chemical, medical and other industries. Rose is a plant with economic value and ornamental value. It can be used medicinally and ediblely. Its buds are used as medicine. It is one of the precious medicinal materials in my country. , Regulate the effect of the body. The buds and flowers of roses have their own style because of their sweet fragrance, rich and plump. There are many varieties of roses, which are resistant to cold, drought and strong ad...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N30/06G01N30/08G01N30/72
CPCG01N30/06G01N30/08G01N30/72
Inventor 陈亚丽李洪敏王翔王坤赵莉
Owner XINJIANG INST OF ECOLOGY & GEOGRAPHY CHINESE ACAD OF SCI
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