Where can the nutritional components of food be tested

Food nutrition testing can usually be completed at qualified third-party testing institutions, disease control centers, or university laboratories. The main testing items include protein, fat, carbohydrates, vitamins, minerals, dietary fiber, etc. The testing methods mainly include chemical analysis, instrumental analysis, microbiological analysis, etc.

1. Third party testing institutions

with CMA certification can provide professional food nutrition testing services. These institutions are equipped with professional equipment such as high-performance liquid chromatography and atomic absorption spectroscopy, which can accurately determine the content of various nutrients in food. The testing process includes sample pretreatment, instrument analysis, data review, and other steps. Typically, a testing report can be issued within 5-7 working days. When selecting, it is necessary to confirm whether the institution has the corresponding testing qualifications and whether the testing items cover the required nutrient indicators.

2. Centers for Disease Control and Prevention Laboratories

Disease prevention and control centers at all levels have food nutrition and safety laboratories that can conduct routine nutritional component testing. These types of laboratories often use national standard testing methods, and the results are authoritative. Some projects can accept individual testing. The testing scope covers energy, three major macronutrients, and common vitamins and minerals. Laboratory testing capabilities for special components need to be confirmed in advance. The detection cycle is relatively long, suitable for clients who are not in a hurry to obtain results.

3. University Research Platform

Universities with food science and engineering majors usually open laboratory sharing services, and some university testing platforms have CNAS accreditation qualifications. This type of platform has lower detection costs, but the detection cycle is unstable and suitable for the detection needs of scientific research purposes. University laboratories have advantages in the development of new nutritional component detection methods, which can detect certain special functional components such as polyphenols and active peptides.

4. Enterprise self built laboratories

Large food production enterprises often build GMP compliant testing laboratories, equipped with near-infrared analyzers, rapid moisture analyzers and other equipment for raw material acceptance and finished product inspection. This type of laboratory has high testing efficiency, but usually does not provide services to the public. Some enterprises will cooperate with universities to establish joint laboratories, which not only meet production needs but also undertake external testing business.

5. Rapid detection technology

Portable nutrient analyzer developed in recent years can quickly measure some indicators on site, such as sugar content measured by a sugar meter and fat measured by an oil analyzer. This type of method is easy to operate but has limited accuracy, making it suitable for preliminary screening. Some intelligent devices achieve multi index synchronous detection through spectral technology, which can serve as a supplementary means for laboratory testing. When conducting food nutrition component testing, it is recommended to choose a suitable institution based on the testing purpose. Conventional quality monitoring can choose rapid detection methods, while scientific research or compliance testing should be entrusted to professional laboratories. Before sending for inspection, it is necessary to clarify the testing standards and methods to ensure that the sample is representative. Special foods such as infant formula need to be tested for all essential nutrients, while health foods need to focus on testing for functional ingredients. The testing report should include elements such as testing methods, result values, and judgment criteria. When used for product labeling, it must comply with relevant national food safety standards. Daily diet does not require frequent testing of nutritional components, and maintaining food diversity can meet nutritional needs.