|
Food analysis for quality control and consumer protection makes use of many different methods, each tailored to a specific objective and a specific part of the electromagnetic spectrum. Near-infrared light, for example, is used for spectroscopic measurement of the sugar, protein, water, and fat content of natural foods to determine their quality. Such measurements are performed in a reflectance geometry with either a few NIR wavelengths or a spectrum from around 900 nm to 1700 nm. Near-infrared light is also useful for high-speed rice sorting, as reflectance values can indicate whether individual grains are good or spoiled.
At shorter wavelengths, UV-excited fluorescence provides a way to detect the presence of carcinogenic aflatoxin that results from mold growth on crops, and bioluminescence measurements are relied upon to find bio-contamination markers such as ATP. Beyond the UV range, X-rays are used by some systems to check fish and poultry for small bone fragments or metal debris, and by others to inspect canned goods and packaged food.
In selecting a detector for food quality analysis, cost is often the most important specification. Other important factors are a wide dynamic range (because measurements are mostly based on absorption) and high throughput. High sensitivity is required for aflatoxin screening, but not for most other applications due to their relatively bright source light.
|
|
Recommended products For component analysis (sugar, protein, glucose, etc.):
For aflatoxin screening (ATP analyzer):
For color detection and/or in-line inspection:
For X-ray imaging:
Please contact us for information on other products which can be used for this application.
|
