ABSTRACT
Non-destructive techniques can be used for internal quality assessment and sorting of vegetables as well as for measurements of critical selection feature in plant breeding programs. Microwave dielectric spectroscopy is an emerging technique used in assessment of the internal quality based on dielectric properties of food products. In acoustic sound, a device is often used to lightly tap or thump the commodity to create a sound wave that pass through the product tissue. Ultrasound technology has been known and used in many areas, including medical diagnostics, industrial processes and metal fabrication. The machine vision system has been increasingly used, especially for applications in quality inspection and defect sorting applications. Machine-vision system was developed for guidance of a robot arm to pick the ripe tomato during harvest through acquiring images from tomato plant. Magnetic resonance imaging has become a well-established technique for non-destructive analysis of the internal structure of food.
