Sudan red detection device and method based on UV curing

A detection device and detection method technology, applied in the direction of measurement device, material analysis by optical means, instrument, etc., can solve the problems of complex instrument structure, cumbersome detection process, strong professionalism, etc., and achieve simple detection process and instrument structure. simple effect

Active Publication Date: 2018-01-23
广州衡创测试技术服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These methods or instruments are complex in structure, or the detection process is cumbersome, or they are highly specialized

Method used

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  • Sudan red detection device and method based on UV curing
  • Sudan red detection device and method based on UV curing
  • Sudan red detection device and method based on UV curing

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specific Embodiment 1

[0026] This embodiment is an embodiment of a Sudan red detection device based on ultraviolet curing.

[0027] The Sudan red detection device based on ultraviolet curing of this embodiment has a schematic structural diagram such as figure 1 Shown. The device includes an illumination light path and an imaging light path;

[0028] The illumination light path is as figure 2 As shown, it includes: an area array LED array 1, an imaging lens 2, a dichroic prism 3, a first diaphragm 4 and an objective lens 5 in the ultraviolet band; the light beam emitted from the area array LED array 1 sequentially passes through the imaging lens 2 and the dichroic prism 3 , After the objective lens 5, irradiate parallel to the surface of the food to be tested and the UV glue mixture 6;

[0029] The imaging light path is as image 3 As shown, it includes: food to be tested and UV glue mixture 6, objective lens 5, first diaphragm 4, beam splitter 3, tube lens 7, second diaphragm 8, scanning lens 9, two-di...

specific Embodiment 2

[0032] This embodiment is an embodiment of a Sudan Red detection method based on UV curing.

[0033] The method for detecting Sudan red based on ultraviolet curing of this embodiment is implemented on the detecting device of Sudan based on ultraviolet curing of specific embodiment 1. The method includes the following steps:

[0034] Step a, mixing the food to be tested and UV glue at 45-65 degrees Celsius to obtain a mixture of food to be tested and UV glue 6;

[0035] Step b: Place the food and UV glue mixture 6 to be tested on the front focal plane of the objective lens 5;

[0036] Step c. Turn on each LED in the area array LED array 1 in turn, and adjust the angle of the two-dimensional scanning galvanometer 10 accordingly, so that the surface information of the food and UV glue mixture 6 to be tested is received by the detector 13, and the number of LEDs is obtained. The same image

[0037] Step d. Extract the gray values ​​of pixels with the same coordinates in the image obtained ...

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Abstract

The invention relates to a tony red detection device and method based on ultraviolet curing. An illuminating light path of the device comprises an area-array LED array at the ultraviolet band, an imaging lens, a beam splitter prism, a first diaphragm and an objective lens. An imaging light path comprises a mixture of food to be detected and UV glue, an objective lens, a first diaphragm, a beam splitter prism, a tube mirror, a second diaphragm, a scanning lens, a two-dimensional scanning galvanometer, a focusing lens, a pinhole and a detector. The method includes the steps that the mixture of food to be detected and UV glue is obtained first; then all LEDs in the area-array LED array are lightened in sequence, a plurality of images are obtained, and accordingly C is calculated; at last, the conclusion about whether tony red is contained or not is drawn. It is discovered that after the tony red is combined with the UV glue, an optically-anisotropic crystal structure can be generated, and the crystal can have an obviously-different light reflecting character under the radiation of ultraviolet light at different angles. On this basis, the tony red detection device and method based on ultraviolet curing are disclosed, the structure of the device is simple, the detection process is easy, and the process can even be operated by common people.

Description

Technical field [0001] The invention belongs to the technical field of food detection, and specifically relates to a Sudan red detection device and method based on ultraviolet curing. Background technique [0002] Sudan red is a chemical dye, mainly used for dyeing oil paint, motor oil, wax and shoe polish. Some illegal vendors add Sudan Red to foods, such as chili powder, chili oil, red tofu, red poultry eggs, etc., to brighten the color of the food and increase sales. However, Sudan red is not a food additive. The chemical composition of Sudan red contains a compound called naphthalene, which has an azo structure. The nature of this chemical structure determines that it is carcinogenic and has obvious effects on the liver and kidney organs of the human body. The toxic effect. [0003] It can be seen that in order to prevent Sudan Red from harming the human body, it is necessary to detect Sudan Red in food. [0004] The traditional detection methods of Sudan red include high perf...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/17
Inventor 陈凯松杨南军
Owner 广州衡创测试技术服务有限公司
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