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Electrochemical fingerprint chromatogram identification method for edible oil

A fingerprint, electrochemical technology, used in scientific instruments, material analysis by electromagnetic means, instruments, etc., to achieve the effect of fast and economical operation, easy operation, no need for pretreatment

Active Publication Date: 2014-06-25
YUEXI GUANGSHENG TEA OIL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the traditional identification is convenient and fast, it still has certain limitations. A simple and easy identification method is urgently needed as a verification and supplement to the traditional identification to increase the accuracy of the identification.

Method used

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  • Electrochemical fingerprint chromatogram identification method for edible oil
  • Electrochemical fingerprint chromatogram identification method for edible oil
  • Electrochemical fingerprint chromatogram identification method for edible oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] 1. Establishment of electrochemical fingerprints of chemical components of sesame oil:

[0033] Using 7 batches of Jusheng brand sesame oil as a standard, the electrochemical fingerprints of its chemical composition were established;

[0034] Instruments LK2005A electrochemical workstation, HH-501 super constant temperature water bath, 85-2A digital constant temperature magnetic stirrer, 213 metal platinum electrode, 217 calomel electrode;

[0035] The chemical oscillation reaction was carried out in a jacketed reactor with continuous stirring. Turn on the super constant temperature water bath, adjust the temperature at (310±0.05)K, add 0.50mL sesame oil, 2.0mL CO(CH 3 ) 2 solution, 12mL H 2 SO 4 (3.0mol / L) solution, 6mL CH 2 (COOH) 2 (0.4mol / L) solution, 3mL Ce(SO 4 ) 2 (0.005mol / L) solution in a jacketed reactor, cover the reactor cover with a thermometer, a 213-type metal platinum electrode and a 217-type calomel electrode. Turn on the computer connected to t...

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Abstract

The invention relates to an electrochemical fingerprint chromatogram identification method for edible oil and provides a method for identifying the authenticity of the edible oil through electrochemical fingerprint chromatograms, belonging to the field of edible oil inspection method. The method comprises the following steps of: a) establishing an edible oil chemical composition fingerprint chromatogram: taking edible oil of the same origin and the same brand as a standard product and establishing the electrochemical fingerprint chromatogram of all chemical compositions of the standard product, wherein the result is shown as the accompanying drawing 1; and b) inspecting a sample: taking an edible oil sample to be inspected, inspecting the edible oil sample under the same conditions under which the standard product is inspected to obtain the chromatogram of the inspected sample, and using a direct observation method or origin software to analyze the fingerprint chromatograms of the standard product and the edible oil sample to obtain a result which is used as a qualitative basis. By using the fingerprint chromatogram of all compositions used by the edible oil, the method has the advantages of good repeatability, no pretreatment, simplicity and convenience in operation, rapidness, economy and the like. Reliable information can be provided for the quality identification of various edible oil products and the identification of low-price edible oil which pretends to be high-price edible oil. The method can be widely popularized in the technical field of edible oil safety inspection.

Description

technical field [0001] The invention relates to an electrochemical fingerprint method for identifying edible oil, belonging to the field of edible oil detection methods. Background technique [0002] The electrochemical fingerprint identification method is a chromatographic identification method that can produce specific E-t curve shape or information parameters according to the chemical composition of edible oil through B-Z (Belousov-Zhabotinskii) oscillation reaction to identify edible oil. The method is mainly used in the field of identification of Chinese herbal medicines. But it has not been applied in the identification of edible oil so far. The main problem is that the B-Z oscillation reaction of edible oil cannot occur under the general oscillation reaction conditions. Therefore, this method has not been extended to the edible oil field. [0003] There are many varieties of edible oil, common ones are corn oil, sesame oil, soybean oil, peanut oil, rapeseed oil, tea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/416
Inventor 查孝柱
Owner YUEXI GUANGSHENG TEA OIL CO LTD
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