Submitted to: Book Chapter
Publication Type: Book / Chapter
Publication Acceptance Date: November 1, 2007
Publication Date: January 1, 2009
Citation: Lu, R. 2009. Spectroscopic Technique for Measuring the Texture of Horticultural Products: Spatially Resolved Approach. In: Zude, M. Optical Monitoring of Fresh and Processed Agricultural Crops. Boca Raton, FL: CRC Press. p. 391-423. Technical Abstract: This book chapter reviews the latest developments and applications of spatially resolved spectroscopic techniques for measuring the optical properties and texture or firmness of horticultural products. The chapter first provides a brief overview of the theory of light transfer in turbid biological materials and the principle of spatially resolved techniques for measuring the optical properties. It then presents a hyperspectral imaging technique and the data analysis methods and procedures for determining the optical properties of horticultural products and for quantifying fruit firmness and light propagation in apples. Thereafter, the chapter describes a practical light scattering technique and mathematical methods for characterizing the spectral scattering profiles of horticultural products as a means to assess fruit firmness. The chapter ends with some concluding remarks on future research needs.