Rapid detection method for tobacco flavors and fragrances with different blending amounts in production through similarity method

A detection method, a technology of tobacco flavor, applied in the direction of measuring devices, analysis materials, material excitation analysis, etc.

Inactive Publication Date: 2019-08-23
CHINA TOBACCO ZHEJIANG IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, at present, there is no rapid identification of tobacco flavors and fragrances by using surface-enhanced Raman spectroscopy to detect different blending amounts of tobacco flavors and fragrances, combined with principal component analysis, and quantifying them into similarities. to report

Method used

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  • Rapid detection method for tobacco flavors and fragrances with different blending amounts in production through similarity method
  • Rapid detection method for tobacco flavors and fragrances with different blending amounts in production through similarity method
  • Rapid detection method for tobacco flavors and fragrances with different blending amounts in production through similarity method

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Experimental program
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Embodiment 1

[0027] 1. Instruments, reagents and instrument working conditions

[0028] 1) Instruments and reagents

[0029] Instrument: microscopic confocal Raman spectrometer (XploRA, French HORIBA company)

[0030] Reagents: chloroauric acid, sodium citrate, tobacco flavors and fragrances (provided by China Tobacco Zhejiang)

[0031] 2) Raman test conditions

[0032] Choose 785nm laser, laser power 1.6mW, number of grating notches 1200 / mm, spectral range: 550~1500cm -1 10-20 spectra were collected for each sample, and the average value was taken.

[0033] 3. Synthesis of Gold Nanoparticles

[0034] Firstly, 200 mL of a 0.01 wt % chloroauric acid solution was boiled, and then 1.5 mL of a 1 wt % sodium citrate solution was quickly added at one time. The solution gradually changed from light yellow to colorless, then to black, and finally to reddish brown, and the whole process of discoloration took about 3 minutes. Afterwards, the solution was kept boiling for 30 min and cooled for ...

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Abstract

The invention discloses a rapid detection method for tobacco flavors and fragrances of different blending amounts in production through a similarity method. Gold nanoparticles are prepared, then, a single-layer gold film is loaded on a gold sheet, and after natural drying, a substrate chip is obtained; the dried substrate chips are respectively put into a standard substance and tobacco flavor material solutions with different blending amounts, and standing, to-be-detected flavor molecules are fully adsorbed on the surface of the gold particles of the substrate chip; redundant flavor materialsolutions on the surface are removed, and vacuum drying is performed on the cleaned chip; afterwards, a Raman spectrometer is adopted to collect the Raman spectrum of the standard substance and the to-be-detected flavor molecules; through a principal component analysis method, the main feature amount of the spectrum is extracted and a score matrix is calculated, the score matrix is drawn as a scatter point, the distance between a blending sample and a standard sample confidence region is calculated, normalization is carried out again, and the difference between the spectrums can be quantified.The method disclosed by the invention has the advantages that direct and rapid detection is realized without pretreatment, the flavors and fragrances of different blending can be effectively identified, and the method is suitable for rapid online analysis of samples on a large scale.

Description

technical field [0001] The invention relates to the technical field of quality inspection of flavors and fragrances, in particular to the rapid identification of flavors and fragrances for tobacco with different blending amounts in production using a similarity method. Background technique [0002] Flavors and fragrances are essential substances in cigarette production, and their formula is the core technology of the cigarette industry. It plays an important role in improving the taste of cigarettes and highlighting the style of tobacco. Therefore, it is particularly important for the quality evaluation of flavors and fragrances for tobacco in actual production. The cigarette flavor and fragrance formula usually contains two or more kinds of flavor raw materials, usually including artificially synthesized flavor substances or natural flavors. In recent studies, the combination of chromatography and mass spectrometry has been used for quality control of flavors and fragranc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/65
CPCG01N21/658
Inventor 高阳张丽娜许利平吴兆明王辉徐清泉许式强李霞蒋健许高燕
Owner CHINA TOBACCO ZHEJIANG IND
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