Two-parameter Lorentzian distribution for monitoring physical parameters of golden colored fruits during drying by application of laser light in the Vis/NIR spectrum

Convective drying is still the most common dehydration technique in industrial applications, while many agricultural products remain susceptible to thermal damage. Quality parameters of these products are not only affected by drying conditions, but are also crop-specific. Meanwhile, the use of laser light backscattering is an innovative and rapid technique to estimate a range of quality parameters during drying of agricultural products. The results of this research provide a basis for robust, in-line quality control during industrial drying processes. In this respect, the application of laser backscattering systems presents many advantages: rapid, real-time product information, eradication of laborious and costly destructive analytical methods, continuous monitoring to avoid over-drying (improved energy efficiency) and quality losses, easy integration into existing drying systems and high resistance to harsh conditions typically found in dryers such as high temperatures and dust.