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Identification method for illegal cooking oil

A technology of gutter oil and grease, applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of expensive instruments, difficult to popularize, difficult to quantify, etc.

Inactive Publication Date: 2012-03-28
李涛 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0015] When using instrument detection methods, because low-field nuclear magnetic resonance, Raman spectroscopy and other instruments are very expensive, it is difficult to popularize, and it is difficult to quantify and only qualitative, so it is not suitable for popularization and application

Method used

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  • Identification method for illegal cooking oil
  • Identification method for illegal cooking oil
  • Identification method for illegal cooking oil

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Embodiment Construction

[0049] The hygienic indicators in the hygienic standards for edible vegetable oil and other oils reflect the basic characteristics of edible finished oils, and can only judge the quality of oils and fats. Using hygienic indicators as direct evidence for judging waste edible oils is very one-sided and is not conducive to the implementation of the law. Food hygiene supervision. At the same time, the sources of waste edible oils and fats are complicated, such as frying oil, gutter oil, etc. In actual work, it is impossible to test the samples after distinguishing their sources. Therefore, the identification indicators must have relatively universal applicability and operability. Based on the above In principle, the present invention uses the mass fraction of palmitoleic acid in the total amount of fatty acids as the standard for detecting waste oil.

[0050] Palmitoleic acid, English name: cis-9-Hexadecenoic Acid or Palmitoleic Acid. It is a monounsaturated fatty acid, also know...

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Abstract

The invention provides an identification method for illegal cooking oil, and mainly solves the problems in the present identification method for illegal cooking oil. The identification method disclosed by the invention is mainly that: the mass fraction for palmitoleic acid occupying the total amount of fatty acid in grease is detected to identify whether the oil is illegal cooking oil or not; and in the practical detection, a sample is detected by adopting a gas chromatograph-mass spectrometer or a gas chromatography after being saponated and performed with methyl esterification, so as to identify whether the oil is illegal cooking oil or not after adopting peak area or peak height normalization quantitation. The method has the characteristics of definite target spot, strong feature, simplicity in operation, strong repeatability, application in quick detection and the like.

Description

technical field [0001] The invention relates to a method for identifying waste oil. Background technique [0002] Waste oil is a general concept, translated into English as "illegal cooking oil", also known as "swill-cooked dirty oil", which is a general term for all kinds of inferior oils. Waste oil among the present invention refers to following three classes: the one, waste oil in a narrow sense, is about the greasy floating thing in the sewer through processing, the oil that extracts; Oil, also known as "swill oil" and "swill oil"; the third is the oil produced after processing and refining inferior pork and beef, viscera, skin or other animal tissues. [0003] At present, the problem of waste oil is prominent in our country, which has attracted great attention from all levels of society, and even caused some people to panic, which has greatly affected the image of the government and regulatory agencies in the hearts of the people. [0004] From a medical and physiolog...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02G01N30/06
Inventor 李涛杨智海朱小红刘海静马鹏飞林芳吕卓徐翔
Owner 李涛
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