Applicability of Near Infrared Reflectance Method to Moisture, Protein and Ash Measurements of Buckwheat Flours

Abstract

Applicability of near infrared reflectance (NIR) method to determine moisture, protein and ash contents in buckwheat flour was confirmed. As the result of stepwise multiple-linear-regression analysis, the correlation coefficients between chemically analyzed values and estimated values by the regression were 0.997 on moisture with 6 wavelengths, 0.906 on protein with 6 wavelenghts and 0.952 on ash with 8 wavelengths. The standard errors of the estimation were 0.172, 0.301 and 0.125%, respectively.