Sample application device for detecting aflatoxin based on thin-layer analysis method

Abstract

The invention relates to a sample application device for detecting aflatoxin based on a thin-layer analysis method. The device comprises a base, a top plate, a controller, a flat plate, a correcting mechanism, a sample application mechanism, a material box, two side plates and four supporting legs, the correcting mechanism comprises a driving assembly and four correcting assemblies; the correctingassembly comprises a moving rod, a fixing ring and a correcting plate; the sample application mechanism comprises a first motor, a rotating shaft, a concentric-square-shaped frame, four sliding blocks, four hanging rods, four sample application assemblies and four connecting assemblies; the driving assembly comprises a second motor, a turntable and four driving rods; according to the sample application device for detecting the aflatoxin based on the thin-layer analysis method, a glass sheet is fixed right above a flat plate through a correction mechanism; and in addition, the sample application mechanism is used for carrying out automatic sample application on the four sides above the glass sheet at the same time, so that the sample application efficiency is improved, and the practicability of the equipment is improved.

Description

technical field [0001] The invention relates to the field of food detection equipment, in particular to a sample pointing device for aflatoxin detection based on a thin-layer analysis method. Background technique [0002] Aflatoxins are metabolites produced by Aspergillus flavus and Aspergillus parasiticus. When grains are not dried in time or stored improperly, they are often easily contaminated by Aspergillus flavus or Aspergillus parasiticus and produce toxins. Aflatoxin is the most toxic mycotoxin found so far. It is commonly found in moldy grains and food products. There are many detection methods for aflatoxin, the most classic of which is thin layer analysis (TLC). After fast extraction, column chromatography, elution, concentration, and thin-layer separation of the sample, blue-violet or yellow-green fluorescence is produced under the ultraviolet lamp with a wavelength of 365nm, and is determined according to the minimum detection amount displayed on the thin layer....

AI Technical Summary

Problems solved by technology

Generally, the spot diameter is greater than 2mm, and should not exceed 5mm. The distance between spots is 1cm, and the distance between the sample point and the edge of the glass is at least 1cmm. At present, people manually spot samples on glass slides at the same time. Deviations are prone to occur, which affects the TLC detection of aflatoxin, so people need a device that can automatically and accurately spot samples on glass slides

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