Calibration transfer between NIR diode array and FT-NIR spectrophotometers for measuring the soluble solids contents of apple
Ma Carmen Alamar, Els Bobelyn, Jeroen Lammertyn, Bart M. Nicolaï and Enrique Moltó
Postharvest Biology and Technology, Volume 45, Issue 1, July 2007, Pages 38-45
2007
บทคัดย่อ
Prediction models of soluble solids contents of fruit obtained with a specific near-infrared spectrophotometer cannot be directly transferred to another spectrophotometer. In this research, a piecewise direct standardization method has been used for this task. As a result, a calibration model for soluble solids contents of apple developed on a Fourier transform based spectrophotometer has been successfully transferred to a diode array (DA) spectrophotometer. The standardization procedure was performed on a data set of 477 Jonagored apples and root mean squared error of prediction of 0.85° Brix was obtained. Additionally, the necessity of calibration transfer procedures between two DA spectrophotometers of the same type and model has also been found.