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Edible vegetable oil authenticity quick screening method based on ionic migration spectrometry

An edible vegetable oil, ion mobility spectrometry technology, applied in special data processing applications, measuring devices, material analysis by electromagnetic means, etc., can solve the problems of complex experimental operation, large workload and time-consuming, short analysis time, etc. Wide, portable instrument, easy to operate effect

Inactive Publication Date: 2014-11-19
INST OF OIL CROPS RES CHINESE ACAD OF AGRI SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this type of method is that the instrument is expensive, the experimental operation is complicated, the workload is large and time-consuming, and professional experimenters are required
In recent years, due to the low operating cost, environmental friendliness, simple operation, no need for sample treatment, short analysis time and high sensitivity, ion mobility spectrometry has shown unique advantages in the fields of food quality and safety, such as the determination of the freshness of meat and the authenticity of wine. Advantages, there is no report on the authenticity of edible oil

Method used

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  • Edible vegetable oil authenticity quick screening method based on ionic migration spectrometry
  • Edible vegetable oil authenticity quick screening method based on ionic migration spectrometry
  • Edible vegetable oil authenticity quick screening method based on ionic migration spectrometry

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1. Identification of the authenticity of linseed oil

[0030] A sample ion mobility spectrometry signal collection: 40 samples of pure linseed oil; % (volume percentage) mixed with linseed oil, a total of 36 samples; 50 μL of each sample was placed in a stoppered test tube, diluted 50 times with n-hexane solvent, vortexed for 30 seconds to mix the sample, and the sample was injected into the sample for detection , collect the sample ion mobility spectrometer information, the ion mobility spectrometer operating parameters are set as: ion source: pulsed glow discharge ion source; drift zone voltage 300 V / cm; migration gas flow rate; 700 mL / min; carrier gas flow rate: 300 mL / min, inlet temperature: 170°C; transfer tube temperature: 60.0°C; injection volume: 4.0μL; test time: 30s. Each sample was tested in triplicate.

[0031] B. Data processing: The original data obtained are ion mobility spectra at different analysis times, which are matrix data. Through obse...

Embodiment 2

[0034] Embodiment 2. Identification of authenticity of grape seed oil

[0035] A sample ion mobility spectrometry signal collection: 15 samples of pure grape seed oil; % (volume percentage) mixed with grape seed oil, a total of 36 samples; 50 μL of each sample was placed in a stoppered test tube, diluted 60 times with n-hexane solvent, vortexed for 40 seconds to mix the samples,

[0036] Sampling needle injection detection, collecting sample information of ion mobility spectrometer, the working parameters of ion mobility spectrometer are set as: ion source: pulsed glow discharge ion source; drift zone voltage 300 V / cm; migration gas flow: 700 mL / min; carrier gas flow rate: 300 mL / min, injection port temperature: 180°C; transfer tube temperature: 70.0°C; injection volume: 4.0μL; test time: 20s.

[0037] B. Data processing: The original data obtained are ion mobility spectra at different analysis times, which are matrix data. By observing and selecting 10 ion mobility spectra in...

Embodiment 3

[0041] Example 3 Identification of authenticity of sesame oil

[0042] Ion mobility spectrometry signal acquisition; sample preparation; 31 pure sesame oil samples; adulterated sesame oil: 5 soybean oil and 5 sesame oil were selected at 9:1, 8:2, 7:3, 6:4, 5:5, 4 :6, 3:7, 2:8, 1:9 (volume percent) ratio mixing, 45 samples are counted; respectively accurately measure 50 μL of the samples into stoppered test tubes, dilute 120 times with n-hexane solvent, vortex Mix the sample for 20 seconds, inject the sample into the ion mobility spectrometer for detection, collect the information of the ion mobility spectrometer, and set the working parameters of the ion mobility spectrometer to the ion source: pulsed glow discharge ion source; drift zone voltage 300 V / cm; Migration gas flow: 700 mL / min; Carrier gas flow: 300 mL / min; Inlet temperature: 160°C; Migration tube temperature: 60.0°C; Injection volume: 5.0μL; Sample detection time: 20s;

[0043] Data processing: By observing and s...

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Abstract

The invention relates to an edible vegetable oil authenticity quick screening method based on ionic migration spectrometry. The method is characterized by including following steps: (1) A. acquisition of ionic migration spectrometry signals, B. establishment of ionic migration spectrometry data base of edible vegetable oil, and C. establishment of authenticity identification model of the edible vegetable oil; and (2) application of the model: performing spectrogram acquisition to a to-be-tested sample according to an acquisition method of the ionic migration spectrometry signals, performing pre-treatment to an acquired ionic migration spectrometry through a method in the B in the step (1) to obtain ionic migration spectrometry data of the sample, and determining authenticity of a to-be-determined sample by means of a classification model of the edible vegetable oil and adulterated edible vegetable oil. The method is simple and quick in operation and can achieve quick screening of authenticity of the edible vegetable oil.

Description

technical field [0001] The invention relates to a rapid screening method for the authenticity of edible vegetable oil based on ion mobility spectrum, belonging to the field of food quality and safety. Background technique [0002] Edible oil is a national nutritional necessity and an important daily necessities. Food is the most important thing for the people, and oil is one of the three essential sources of nutrition for the human body. It is also an important daily necessities for the people. In recent years, incidents of edible oil quality and safety in my country have occurred frequently. The "waste oil" incident that was exposed in 2010 aroused the whole society's high attention to the safety of edible vegetable oil, and made consumers "change color when talking about oil". The Ministry of Health has solicited testing methods for "gutter oil" from the public in two rounds, but no effective method has been published so far. In October 2013, Taiwan exposed the "falsific...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/62G06F19/00G01N27/622
Inventor 张良晓李培武帅茜张奇马飞丁小霞
Owner INST OF OIL CROPS RES CHINESE ACAD OF AGRI SCI
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