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Edible oil quality fast identification method and identification device based on three-dimensional fluorescence spectrum

A three-dimensional fluorescence and edible oil technology, applied in the fields of fluorescence/phosphorescence, material excitation analysis, etc., to achieve the effect of simple identification method, simple device structure and strong specificity

Inactive Publication Date: 2015-07-01
NINGBO UNIVERSITY OF TECHNOLOGY
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Problems solved by technology

The selectivity and sensitivity of conventional fluorescence spectroscopy are challenged when dealing with overlapping fluorescence spectra of multi-component samples. Therefore, it is urgent to study a new detection method that provides more information about the detected substance.

Method used

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  • Edible oil quality fast identification method and identification device based on three-dimensional fluorescence spectrum
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  • Edible oil quality fast identification method and identification device based on three-dimensional fluorescence spectrum

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Embodiment Construction

[0024] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0025] The reference signs are: computer 1, data acquisition card 2, CCD image sensor 3, cuvette 4, monochromator 5, light inlet 5a, light outlet 5b, housing 51, reflective mirror 52, second concave mirror 54. The first grating 55a, the second grating 55b, the focusing lens 6, the control circuit 7, and the xenon lamp 8.

[0026] A method for quickly identifying edible oil quality based on three-dimensional fluorescence spectroscopy, comprising the following steps:

[0027] Step 1, put the oil sample to be tested into the cuvette 4;

[0028] Step 2, turn on the xenon lamp 8, the light signal from the xenon lamp 8 is divided into monochromatic light by the monochromator 5, and the monochromatic light hits the oil sample to be tested and puts it into the cuvette 4 to excite the oil sample to be tested to emit fluorescence;

[0029] Step 3, col...

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Abstract

The invention discloses an edible oil quality fast identification method and identification device based on the three-dimensional fluorescence spectrum. The identification device comprises a computer with a pre-stored edible oil database, a data acquiring card, a CCD image sensor, a cuvette, a monochrometer, a focusing lens, a control circuit and a xenon lamp, the structure is simple and the connection is convenient; and a light signal emitted by the xenon lamp is divided into monochromatic light through the monochrometer, and then the monochromatic light is emitted to the cuvette with a to-be-tested oil sample to motivate the to-be-tested oil sample to emit the fluorescence, the fluorescence is received by the CCD image sensor after being collected by the focusing lens, and then the data acquiring card is used for composing the obtained fluorescence spectrum as a matrix array to be transmitted to the computer, the computer is used for contrastively analyzing the data and the edible oil database to obtain a result. The identification method is simple, the identification speed is fast, the identification accuracy is high, and the specificity is strong.

Description

technical field [0001] The invention relates to the technical field of edible oil quality identification, in particular to a rapid identification method and identification device for edible oil quality based on three-dimensional fluorescence spectrum. Background technique [0002] The quality of edible oil is directly related to the food safety status of the country. However, "gutter oil" and "roasted duck oil" have repeatedly returned to the dining table to pretend to be edible oil, which has brought great harm to the food hygiene and physical health of the people. After the waste oil is oxidized and adsorbed, the color of the oil is obviously lighter, the viscosity is reduced, and the pungent smell disappears. Therefore, waste oil cannot be easily detected only by sensory detection of color, transparency, etc. [0003] In addition, adulteration in edible oils and fats for export and domestic market has become increasingly serious in recent years. Vegetable oils vary grea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/64
Inventor 丁志群
Owner NINGBO UNIVERSITY OF TECHNOLOGY
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