Raman Spectroscopy Analysis in Food Testing
Raman spectroscopy is a molecular characterization technique based on Raman effect. The signal comes from the vibration and rotation of the molecule, and the food is nondestructive tested by analyzing the molecular structure in the tested food. The Raman spectrum can not only qualitatively analyze the chemical structure and chemical bond changes of the components contained in the tested substance, but also quantitatively detect the content of certain components of the food. The method can be applied to food composition detection, food authenticity and adulteration detection, pesticide residue detection, food additives and toxin detection. Principle of Raman Spectroscopy Analysis When the incident photons of monochromatic light interact with molecules, elastic collisions and inelastic collisions occur. There is energy exchange in inelastic collisions, which changes the movement direction and channel of photons. This scattering process is called Raman scattering. Raman scattering effect ...