What is Food inspection? What should you know about food inspection

To understand Chinese food inspection, greentest eco 6 we must know the three common methods of food inspection in China:

High accuracy (qualitative and quantitative)- High Performance Liquid Chromatography (HPLC) or Liquid chromatography-Tandem Mass Spectrometer (LC-MS) and Gas Chromatography-Mass Spectrometer (GC-MS)

These three test methods are internationally recognized standard methods, radioactive detection in the operation of these instruments require a very professional staff to conduct sample pretreatment and follow-up operations, and the results of this test method are accurate, "quality" and "quantity" can be accurately read, for example, we want to test the residues of sulfonamides in food, using liquid chromatography tandem mass spectrometer, We know which sulfonamides are in the food, and how much of each. These instruments are very sensitive (accurate) and the test results will not be accurate if the pretreatment of the sample is not accurate, so it usually needs to be carried out by an experienced professional. The high cost of these testing equipment, coupled with annual maintenance costs, makes many food industries. Therefore, many food industries will send samples to third-party inspection units such as: SGS, national notarization... Let's wait.

High performance (qualitative and quantitative)-ELISA ELISA

Enzyme-linked immunosorbent assay (ELISA) uses an antigen-antibody immunobinding reaction to link an enzyme to an antigen or antibody molecule to detect the desired antigen or antibody molecule, and then evaluates the concentration of the substance in the sample based on the color intensity of the sample. Elisa also requires equipment and professional operators to operate, but training personnel for chromatographic analysis is much simpler, radiation detectors for sale ELISA can screen a large number of samples, with simple instruments and equipment can be quantitative detection, the entire test operation can interpret the test results within 1 hour. Elisa machines are much cheaper and faster than HPLC machines, and can also be both "qualitative" and "quantitative", so many food plant trusts have specialist quality control units.

Three, the fastest, the most affordable (qualitative, semi-quantitative) - Rapid Test reagent (Rapid Test)

The principle of rapid screening test is based on the specificity and immunoaffinity of antigen and antibody, and colloidal gold is used as a chromogenic agent to interpret the test results. Rapid screening reagents do not require expensive equipment, and operators only need to have a basic concept to start quickly. After the sample is pretreated with the rapid screening reagent, the test results can be read in 5-10 minutes. The inspection cost is low (100 times), the inspection speed is fast, and it is usually used as a screening tool for food raw materials.

common methods food industries

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