17 - Development of multispectral imaging systems for quality evaluation of cereal grains and grain products

Abstract

The commercial value of small grains such as wheat and barley is determined by their overall quality. Grading systems established by the major countries exporting these grains establish maximum tolerances for various contaminants and damage factors to the grain kernels. Grading factors are mainly visual characteristics. Collectively, the grading factors describe grain quality and safety as affected by growing conditions, handling and storage practices. Human visual inspection is the current method of grain quality assessment, which can be subjective and inconsistent. Alternative instrumental approaches to quality assurance are constantly being researched. Hyperspectral imaging has been used effectively for the detection and quantification of grain damage due to various grading factors such as mildew, fusarium, sprouting and green immature seeds.