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University of Nebraska - Lincoln

Dissertations, Theses, & Student Research in Food Science and Technology

2007

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Full-Text Articles in Life Sciences

Use Of Near-Infrared Spectroscopy For Qualitative And Quantitative Analyses Of Grains And Cereal Products, Panjama Cheewapramong Dec 2007

Use Of Near-Infrared Spectroscopy For Qualitative And Quantitative Analyses Of Grains And Cereal Products, Panjama Cheewapramong

Dissertations, Theses, & Student Research in Food Science and Technology

The purpose of the first part of the study was to develop a simplified near-infrared reflectance (NIR) spectroscopy method for detecting insect larvae in individual wheat kernels. Discriminant analysis, based on Mahalanobis distances calculated from log 1/R data at only four discrete wavelengths, yielded better results for classification of sound and insect infested wheat kernels than principal component analysis (PCA) using the spectral region from 1100 to 1900 nm. This simplified technique was then used to detect 3- and 4-week-old larvae of granary and maize weevils in wheat kernels. A model developed from a calibration set containing sound kernels ...