Abstract：
:Grain protein content (GPC) is an important quality determinant in barley. This research aimed to explore the relationship between GPC and diffuse reflectance spectra in barley. The results indicate that normalizing, and taking first-order derivatives can improve the class models by enhancing signal-to-noise ratio, reducing baseline and background shifts. The most accurate and stable models were obtained with derivative spectra for GPC. Three multivariate calibrations including least squares support vector machine regression (LSSVR), partial least squares (PLS), and radial basis function (RBF) neural network were adopted for development of GPC determination models. The Lin_LSSVR and RBF_LSSVR models showed higher accuracy than PLS and RBF_NN models. Thirteen spectral wavelengths were found to possess large spectrum variation and show high contribution to calibration models. From the present study, the calibration models of GPC in barley were successfully developed and could be applied to quality control in malting, feed processing, and breeding selection.
journal_name
Food Chemjournal_title
Food chemistryauthors
Lin C,Chen X,Jian L,Shi C,Jin X,Zhang Gdoi
10.1016/j.foodchem.2014.04.056subject
Has Abstractpub_date
2014-11-01 00:00:00pages
10-5eissn
0308-8146issn
1873-7072pii
S0308-8146(14)00613-Xjournal_volume
162pub_type
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