Classification test method and classification test system for edible oil and swill-cooked dirty oil

Abstract

The invention discloses a classification test method and a classification test system for edible oil and swill-cooked dirty oil. The classification test method comprises the following steps that: Raman fingerprint databases for edible oil and swill-cooked dirty oil are first created, and the notable difference between the maximum Raman intensity values of the characteristic peaks of edible oil and swill-cooked dirty oil within a five-band wave number range and the threshold of the difference are then obtained by way of comparison; and in a practical test, the variety of a tested samples obtained by extracting the maximum Raman intensity value of the characteristic peak of the tested sample within the five-band wave number range and comparing the maximum Raman intensity value with the difference threshold. The classification test system comprises a light source system, an optical splitter, a sample box and a measurement control unit. The invention has the advantages of flexibility and high specificity, and can effectively test whether a tested sample is pure swill-cooked dirty oil, pure edible oil meeting the active national standard or edible oil mixed with swill-cooked dirty oil or not; and meanwhile, the operation is simple and convenient, the testing time is short, and swill-cooked dirty oil can be tested on the spot.

Description

technical field [0001] The invention relates to a method and system for classifying and detecting edible oils and waste oils, belonging to the technical field of oils and oils detection. Background technique [0002] Waste oil refers to the oil extracted from the leftovers and leftovers (commonly known as swill) of restaurants and restaurants or the greasy floating objects in urban sewers after simple processing. In addition, it also includes the oil used for fried food that has been used more than a certain number of times, and then reused or re-used after adding some new oil to it; and the animal oil obtained from the processing of inferior meat, offal and other leftovers. It can be seen that the main difference between plant-based waste oil and edible oil is that it has been used or repeatedly used (that is, after repeated heating), while most or part of the raw materials of animal-based waste oil have been spoiled. In short, compared with normal edible oils and fats, th...

AI Technical Summary

Problems solved by technology

With the advancement of equipment manufacturing, the problems of fluorescence (low signal-to-noise ratio), photolysis, wavelength correction, and inability to obtain high-resolution bands that previously limited Raman applications have been effectively resolved.

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