CN209247789U - A device for detecting pesticide residues in milk - Google Patents

Abstract

The utility model discloses a detection device for pesticide residues in milk, which belongs to the technical field of dairy products and relates to a detection device for dairy products. A device for detecting pesticide residues in milk, comprising a box body and a feeding device arranged inside the box body, the side wall of the box body is provided with an observation port, and the top is provided with two feeding ports, and the feeding device includes Two feeding funnels arranged in parallel, the lower part of the feeding funnel communicates with two material barrels through two parallel lowering pipes, the bottom of the material barrel communicates with the observer through a pipeline, and the observer It is a transparent glass container provided with test paper. The utility model has the advantages of simple structure, fast and convenient operation, time saving and labor saving, and high testing efficiency.

Description

A device for detecting pesticide residues in milk

technical field

The utility model belongs to the technical field of dairy products and relates to a detection device for dairy products, in particular to a detection device for pesticide residues in milk.

Background technique

At present, in order to prevent crops from being infested by insects, people will spray pesticides when planting crops, thereby forming pesticide residues. Pesticide residue is a general term for microbial biomass pesticide precursors, toxic metabolites, degradation products and impurities that remain in organisms, crops, soil, water, and the atmosphere without being decomposed within a period of time after pesticide use. As for the pesticides applied to the crops, some of them are attached to the crops, some are scattered in the environment such as soil, air and water, and some of the pesticides remaining in the environment will be absorbed by the plants. Pesticide residues reach humans and animals directly through plant fruits, water, and air, or pass through the environment and food chain to humans and animals.

Pesticide residues are absorbed by the soil, causing the grass that grows from the soil to contain pesticides, and cows will produce milk with certain pesticide residues after eating. Eating milk with pesticide residues will cause certain harm to the human body. Therefore, it is necessary to measure pesticide residues in milk to better control the quality of milk and reduce the impact on the human body.

Contents of the invention

The purpose of the utility model is to provide a detection device for pesticide residues in milk.

The utility model is achieved through the following technical solutions:

A detection device for pesticide residues in milk, comprising a box body and a feeding device arranged inside the box body, the side wall of the box body is provided with an observation port, and the top is provided with two feeding ports,

The feeding device includes two feeding funnels arranged in parallel, the lower part of the feeding funnel communicates with the two material barrels through two parallel lowering pipes, and the bottom of the material barrel communicates with the observer through a pipeline. Connected, the observer is a transparent glass container provided with test paper.

Further, the upper parts of the two feed ports are respectively provided with end caps to prevent external influence on the test.

The box is provided with a thermal insulation material layer, which is used to keep the enzyme warm and prevent the influence of temperature on the enzyme activity.

The thermal insulation material is a layer of foam thermal insulation material, which is fixed around the two material barrels. The micropores in the foam material prevent the "convective heat conduction" effect formed by air circulation, and can play a good thermal insulation effect.

The bottom of the observer is connected to a discharge pipe provided with a valve, which is used to discharge the measured material and facilitate cleaning of the equipment.

The material barrel and the observer are cylindrical containers to reduce cleaning dead angles in the device, which are easier to clean than rectangular containers and have higher test accuracy.

The test paper is arranged on the side wall of the observer.

The two feeding funnels of the feeding device of the utility model are used for the introduction of milk and the addition of reagents. The foam keeps the enzyme warm to prevent the influence of temperature on the enzyme activity. The milk and cholinesterase flow along the pipeline to the observer and Mixing, the final enzyme activity is determined by BTB (thymol blue) test paper method. The enzyme inhibition method is that organophosphorus and carbamate pesticides can inhibit the activity of cholinesterase (ChE) in animals. Under certain conditions, there is a good correlation between the activity of ChE and the concentration of pesticides. The situation of pesticide residues can be judged by measuring the influence of milk pesticide residue extract on ChE enzyme activity; the test paper set by the observer is soaked with acetylcholine and acid-base indicator BTB. The color of the indicator BTB, which is blue and yellow in acidic environment, changes from blue to yellow. Since the degree of BTB’s change from blue to yellow is related to the amount of acetic acid produced, it can be judged by comparing the color of the test paper with the standard color plate. The level of alkaline esterase activity can be inferred whether milk contains pesticide residues that inhibit cholinesterase.

The utility model has the advantages of simple structure, fast and convenient operation, time saving and labor saving, and high testing efficiency.

Description of drawings

Fig. 1 is the structural representation of the utility model;

In the figure: 1-box, 2-feeding funnel, 3-feeding pipe, 4-material bucket, 5-pipeline, 6-observer, 7-observation port, 8-insulation material layer, 9-discharging Tube, 10-end cap.

Detailed ways

The utility model will be further described below in conjunction with specific examples, but it should be understood that these examples are only used to illustrate the utility model and are not intended to limit the scope of the utility model. Various changes or modifications made by those skilled in the art to the present utility model on the basis of the present utility model shall also fall within the protection scope of the present utility model.

A detection device for pesticide residues in milk as shown in Figure 1 includes a box body 1 and a feeding device arranged inside the box body. The side wall of the box body 1 is provided with an observation port 7, and the top is provided with two feeding devices. mouth, the feed device includes two feed funnels 2 arranged in parallel, the bottom of the feed funnel 2 communicates with the two material buckets 4 through two parallel feed pipes 3, the material bucket 4 The bottom communicates with the observer 6 through the pipeline 5, and the observer 6 is a transparent glass container provided with test paper.

Wherein as shown in Fig. 1, end cap 10 is respectively provided with on the top of two feed inlets, to prevent the influence of the outside world on test; Foam insulation material layer is arranged in box body 1, is fixed around two material buckets, is used for The enzyme is kept warm; the bottom of the observer 6 is connected with a discharge pipe 9 with a valve, which is used to discharge the material after the measurement has been completed; the material barrel 4 and the observer 5 are preferably cylindrical containers, and the test paper is arranged on the side of the observer on the wall.

Claims (7)

1. A detection device for pesticide residues in milk, characterized in that it comprises a casing and a feed device arranged inside the casing, the side wall of the casing is provided with an observation port, and the top is provided with two feed ports, so The feeding device includes two parallel feeding funnels, the lower part of the feeding funnel communicates with the two material barrels through two parallel lowering pipes, and the bottom of the material barrel communicates with the observer through pipelines , the observer is a transparent glass container provided with test paper. 2. A device for detecting pesticide residues in milk according to claim 1, characterized in that the upper parts of the two feeding ports are respectively provided with end caps. 3. A device for detecting pesticide residues in milk according to claim 1 or 2, characterized in that a layer of heat-insulating material is arranged inside the box. 4. A device for detecting pesticide residues in milk according to claim 3, characterized in that, the thermal insulation material is a layer of foam thermal insulation material, which is fixed around the two material barrels. 5. A device for detecting pesticide residues in milk according to claim 1 or 2, characterized in that the bottom of the observer is connected to a discharge pipe provided with a valve. 6. A device for detecting pesticide residues in milk according to claim 1 or 2, characterized in that the material barrel and the observer are cylindrical containers. 7. A device for detecting pesticide residues in milk according to claim 1 or 2, characterized in that said test paper is arranged on the side wall of the viewer.