RELATED APPLICATION

The present application is based on and claims priority to Taiwanese Application Number 108108078, filed Mar. 11, 2019, the disclosure of which is hereby incorporated by reference herein in its entirety.

BACKGROUND

1. Technical Field

This disclosure relates to a quick extraction kit and method of obtaining primary test liquid using the same, and more particularly relates to a kit for extracting drug residues from livestock or poultry aquatic products and method of obtaining primary test liquid from livestock or poultry aquatic products using the same.

2. Description of the Related Art

A veterinary drug is a substance that deals with the prevention, diagnosis and treatment of disease, disorder and injury in animals. In general, food animals include meat-producing or milk-producing animals, poultry, fish and bees.

Animals also get sick like humans and therefore need appropriate treatment. Veterinary drugs can be used to control disease in animals so as to produce food efficiently. In the absence of proper treatment, diseases in animals can affect or reduce production and ultimately reduce the quantity and quality of food. In addition to use as a treatment animal husbandry may also use veterinary drugs to improve feed performance, increase production and promote growth.

Veterinary drugs break down into other substances over time when being applied to animals. However, veterinary drugs will also leave as residues in the animals. Residues of veterinary drugs refer to veterinary drug residues left on animals in a certain period of time after application. These residues may be veterinary drugs themselves or decomposed substances. Residues of veterinary drugs in food may have adverse effects on human health.

In order to detect the amount of veterinary drug residues in food, many extraction kits have been developed. However, current detection of different types of veterinary drug residues uses different extraction kits and detection method.

For example, in order to detect the residual amount of animal drugs such as sulfa drugs, receptors and tetracycline in food, the government has announced different extraction kits and detection methods.

SUMMARY

In order to solve the problem of using different extraction kits and methods of detecting different kinds of veterinary drug residues in food, the present disclosure provides a kit for extracting drug residues from livestock or poultry aquatic products and a method of obtaining primary test liquid from livestock or poultry aquatic products using the same.

In one embodiment, the kit for extracting drug residues from livestock or poultry aquatic products according to the present disclosure includes a pipe, a first powder mixture layer and a second powder mixture layer. The pipe has an output port at the bottom thereof and an input port at the top thereof for inputting a sample solution. The first powder mixture layer is in the form of powder and filled in the pipe. The first powder mixture layer contains anhydrous sodium sulfate powder and sodium chloride powder. The second powder mixture layer is in the form of powder and filled in the pipe. The second powder mixture layer is located below the first powder mixture layer and above the output port. The second powder mixture layer contains anhydrous sodium sulfate powder and C18 powder.

In another embodiment, the method of obtaining a primary test liquid from a livestock or poultry aquatic sample includes the steps: homogenizing the sample; shaking the homogenized sample with an extraction solvent to obtain a sample solution; adding the sample solution into the pipe of the above kit; and driving the sample solution in the pipe to flow through the first powder mixture layer and the second powder mixture layer in the pipe in sequence to output from the output port of the pipe a primary test liquid.

When the kit of the present disclosure is used to obtain primary test liquid from 20 samples, the consumption of the extraction solvent may be saved by 35-90%, and the operation time for extraction may be saved by 80-95%.

Furthermore, according to the kit of the present disclosure and the method of obtaining the primary test liquid, 7 to 10 types of animal drug residues in food, including sulfonamides, quinolones, ionic anticoccidial drugs, antiprotozoal agents, tetracyclines, receptors, and cephalosporins may be simultaneously detected. In comparison with the current government announcement method, detection of different types of drug residues needs different detection methods.

The foregoing, as well as additional objects, features and advantages of the disclosure will be more readily apparent from the following detailed description, which proceeds with reference to the accompanying drawings.

