Research Progress of Non-Destructive Detection Principle and Application Effect of Biospeckle Laser Technique in Food

Biospeckle laser technique is a spectroscopy technology that uses He-Ne laser to irradiate the surface of the sample, forming different speckle patterns due to the different light scattering capabilities of the sample, so as to realize the qualitative and quantitative analysis of sample quality and nutrients. The size of the biologic activity is related to the physical characteristics, chemical composition and internal quality of the sample during the biochemical reaction. This technique has the advantages of small damage to samples, short detection time, and can be applied to the aging detection, freshness detection and quality detection of agricultural and livestock products, but its poor stability and shallow penetration depth also limit its application. This article briefly describes the characteristics of biospeckle laser technique, focusing on its non-destructive detection principles and the research progress of its application effects in food aging, freshness, and quality detection, and prospects its application potential and limitations in food detection. It aims to provide theoretical and technical support for the application of this technique in the field of food non-destructive detection.