Method for identifying drainage oil based on finger-print technology

A technology of gutter oil and map, applied in color/spectral characteristic measurement, measuring device, material analysis through optical means, etc., can solve complex and inaccurate problems, and achieve the effect of high identification accuracy and high practical value

Inactive Publication Date: 2014-01-22
佛山市技术标准研究院 +1
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Problems solved by technology

[0004] The purpose of the present invention is to design a waste oil identification technology based on fingerprint technology to solve t...

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  • Method for identifying drainage oil based on finger-print technology
  • Method for identifying drainage oil based on finger-print technology
  • Method for identifying drainage oil based on finger-print technology

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Embodiment

[0020] Implementation example: first take the oil to be tested with a straw, drop 1 drop onto a potassium bromide tablet, use infrared spectroscopy (IR) to measure the infrared spectrum absorption spectrum, and compare the spectrum with the qualified oil and catering waste oil spectrum in the fingerprint database. By comparison, if it is basically consistent with the profile ratio of a certain spectrum in the spectral library, it can be preliminarily judged as the oil product. However, most qualified edible oils have a high similarity with the infrared spectral profiles of gutter oil, and it is difficult to distinguish them only by the spectral profile. In order to further investigate the difference in the infrared spectrum of oil products, compare the relative intensity of specific infrared absorption peaks, and select the common absorption peak in each oil——1745cm -1 The absorption peak, that is, the stretching vibration peak absorption intensity of the carbonyl group (C=O) i...

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Abstract

The invention relates to a method for identifying drainage oil based on a finger-print technology, belonging to the field of quality and safety detection of agriculture products. According to the traditional method for identifying the drainage oil, basically, traditional morphological identification and physical and chemical identification are used for identifying the authenticity of the drainage oil and evaluating the good and bad of the drainage oil, so that the traditional method has more human factors, or only concentrates on the individual component of many complex components but neglects many other components in the drainage oil. According to the method for identifying drainage oil based on the finger-print technology, infrared spectroscopy (IR), ultraviolet-visible spectrum and gas chromatography-mass spectrum (GC-MS) are respectively used for establishing a finger-print database, the fatty acid component of an oil sample to be identified is analyzed, and the drainage oil product is identified accurately by combining the result of relative degree of unsaturation (U/R) of the specificity components myristic acid and fatty acid of the drainage oil. Therefore, the problem that the drainage oil is identified only through a few single indexes but cannot be identified completely and accurately at present is solved, furthermore, the established finger-print database is easy to maintain, and the method has good identification accuracy and repeatability, and has a high practical value.

Description

technical field [0001] The invention relates to a waste oil identification technology based on fingerprint technology, and belongs to the field of agricultural product quality and safety detection. Background technique [0002] Waste oil is a non-edible oil with extremely poor quality and hygiene, and its peroxide value, acid value, moisture, carbonyl value, internal aldehydes, and other indicators seriously exceed the standard. Hogwash oil, old frying oil, inferior edible oil, adulterated edible oil, etc. are collectively referred to as gutter oil. [0003] At present, the identification and detection of waste oil in my country is basically based on traditional character identification and physical and chemical identification to determine the authenticity and evaluate the quality. The identified human factors are relatively large, or only consider individual components in many complex components, while ignoring many other components of waste oil. Fingerprint technology is...

Claims

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Application Information

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IPC IPC(8): G01N21/3577G01N21/33G01N30/02
Inventor 许春才李辰龚悦肖明威龚青曾显华范海陆
Owner 佛山市技术标准研究院
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