Cabbage vegetable testing

The detection methods of cabbage vegetables usually involve multiple aspects, including appearance inspection, nutrient analysis, pesticide residue detection, and heavy metal detection. The following is a detailed description of these detection methods:

1. Appearance inspection
Leaf inspection: Observe whether the color of the leaves is bright, whether the shape is complete, and whether there are spots, wormholes, or damage on the leaves.
Petiole inspection: Check whether the petiole is thick and whether it is bent or broken.
Root inspection: Observe whether the roots have traces of rot, lesions, or insect pests.
2. Nutritional component analysis
Vitamin analysis: Analyze the content of vitamins in cabbage, such as vitamin C and vitamin K, through professional instruments.
Mineral analysis: Detect the mineral components in cabbage, such as calcium, iron, zinc, etc.
Cellulose analysis: Measure the cellulose content in cabbage and evaluate its nutritional value.
3. Pesticide residue detection
Sampling: Take samples from different parts of the cabbage (such as leaves, petioles, and roots) to ensure the sampling is representative.
Pretreatment: Wash, drain, crush, and other treatments of the samples for subsequent testing.
Detection methods:
Gas chromatography (GC): suitable for the detection of volatile pesticide residues, with high sensitivity and accuracy.
Liquid chromatography (HPLC): suitable for the separation and detection of complex mixtures, often used for the analysis of non-volatile pesticide residues.
Mass spectrometry (MS) is used in combination with chromatography to enhance the specificity of detection and improve the accuracy of detection results.
IV. Heavy metal detection
Sampling and pretreatment: similar to pesticide residue detection, sampling from different parts of cabbage and pretreatment.
Detection methods:
Atomic absorption spectroscopy (AAS): used to detect heavy metal elements in cabbage, such as cadmium and lead.
Inductively coupled plasma mass spectrometry (ICP-MS): provides more accurate detection of heavy metal elements, suitable for simultaneous analysis of multiple elements.
V. Other detection items
In addition to the above tests, cabbage can also be tested for genetically modified components and microbial detection as needed. Genetically modified component detection mainly identifies whether cabbage contains genetically modified components, while microbial detection evaluates the sanitary status of cabbage, such as the content of microorganisms such as bacteria and mold.

VI. Testing process and report
Sampling and preservation: Determine a reasonable number of samples and indicate the specific source of the samples. At the same time, the proper preservation of samples should be paid attention to to avoid data distortion due to improper handling.
Testing implementation: Perform detailed inspections of appearance, touch, smell, etc. in accordance with standard operating procedures, and use professional instruments to complete the testing of key indicators such as humidity, nutrients, pesticide residues, and heavy metals.
Data collection and integration: After all test data are collected, they are comprehensively processed to form an authoritative inspection report.
Report issuance: For cabbage that passes the inspection, a formal inspection report is issued in a timely manner, and a clear qualified mark is affixed. For unqualified cabbage, corresponding treatment suggestions are put forward.
In summary, the detection method of cabbage vegetables involves multiple aspects, and it is necessary to comprehensively use a variety of detection technologies and means to ensure the accuracy and reliability of the test results. Through scientific detection methods and strict detection processes, the quality and safety of cabbage can be effectively evaluated, providing consumers with healthy and safe food guarantees.