In modern society, food safety is the top priority of public concern. With the continuous advancement of science and technology, a variety of high-precision testing equipment is applied to the field of food safety to ensure that the content of harmful substances in food is below the safety standard. Among them, ultraviolet-visible spectrophotometer (UV-VIS spectrophotometer), as an efficient and sensitive analytical tool, has become an indispensable part of food safety testing.
UV/VIS spectrophotometers use the absorption properties of a substance for electromagnetic waves in the UV-to-visible region for qualitative and quantitative analysis. This technique is simple to operate, highly sensitive, and accurate, making it ideal for the rapid screening and determination of a wide range of compounds in food.
1. Features of L6 IOT intelligent series ultraviolet-visible spectrophotometer:
1. High-definition color touch screen.
It adopts high-resolution (1024*768) dot matrix 7-inch color touch LCD display, and the operation interface is friendly and concise.
2. The new "cloud technology" application, "small program" solves big problems.
The instrument supports cloud storage function, which can easily realize WeChat scanning and add yoke@cloud data program, which is convenient for customers' application scenarios.
3. The core components are fully upgraded and cost-effective.
The instrument adopts the high-resolution C-T monochromator of "shining holographic grating", and adopts the 24-bit high-precision AD chip of the American AD company, so that the economic instrument has low stray light (less than 0.).1t%), high precision, high stability (0.002a）。
4. Large-capacity storage space, support user self-wire.
The instrument has a strong storage capacity, which can store 500 data and 30 working curves, which is convenient for customers to use.
5. Multi-interface data transmission, ultra-multi-functional expansion.
The instrument is equipped with a USB interface and a WiFi module as standard, as well as a Bluetooth module. Wireless Bluetooth printing can be realized; It can be connected to YokeLab computer software to quickly manage spectral data and facilitate data processing. It can be exported directly through the U disk, and the exported data can be directly opened and edited by Excel, which is convenient for customer application.
6. It realizes the functions of basic measurement, quantitative measurement, data storage and other functions of the economical instrument.
7. Wavelength scanning, multiple measurement modes.
Automatic wavelength setting, automatic lamp switching setting, after connecting to computer software, it can realize advanced functions such as wavelength scanning, kinetic determination, quantitative determination, nucleic acid determination, wavelength superposition, integral derivative, etc.
In the food industry, UV/VIS spectrophotometers are widely used to detect the content of additives such as pigments, preservatives, sweeteners, etc. in food. For example, sodium benzoate is a common food preservative, and excessive use may cause health effects on humans. With UV/VIS spectrophotometers, researchers can accurately determine the sodium benzoate content in food samples in minutes, ensuring that they meet food safety standards.
In addition, UV/VIS spectrophotometers can also be used to detect natural and synthetic pigments in food. While these colors add to the visual appeal of food products, some synthetic colors can pose a health risk to consumers. By spectrally scanning food samples, researchers can quickly identify and quantify specific pigments in food to ensure food safety and quality.
Heavy metal contamination is a serious problem in food safety testing. The presence of heavy metals such as lead, mercury, cadmium, etc., even in trace amounts, may cause serious harm to human health in the long term. UV/VIS spectrophotometers, in combination with specific chromogenic agents, can effectively detect heavy metal content in food. For example, by forming a lead-copper reagent complex, UV/VIS spectrophotometers are able to detect lead levels in food samples at the ppb level, ensuring that food meets strict safety standards.
In addition to the above-mentioned applications, UV/VIS spectrophotometers also play an important role in the detection of pesticide residues, biotoxins, migrates in food packaging materials, and more. Its high efficiency and accuracy make food safety testing more convenient, and provide strong technical support for regulatory agencies and food production enterprises.
As technology continues to evolve, so does the functionality of UV/VIS spectrophotometers. The combination of new detection methods and technologies, such as coupled to high-performance liquid chromatography (HPLC) or mass spectrometry (MS), further increases the sensitivity and accuracy of the assays, making food safety testing more comprehensive and reliable.
In short, the application of ultraviolet-visible spectrophotometer in food safety testing not only improves the efficiency and accuracy of detection, but also provides a powerful scientific means to protect public health. With the continuous advancement of science and technology, we have reason to believe that UV/VIS spectrophotometers will play a greater role in future food safety testing and provide consumers with safer food.