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The development of universal calibrations for measurement of protein and moisture in UK home‐grown wheat by near‐infrared reflectance analysis
Author(s) -
Osborne Brian G.,
Douglas Stuart,
Fearn Thomas,
Willis Kenneth H.
Publication year - 1982
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.2740330809
Subject(s) - kjeldahl method , moisture , reflectivity , environmental science , near infrared reflectance spectroscopy , infrared , water content , calibration , near infrared spectroscopy , remote sensing , mathematics , chemistry , statistics , geography , meteorology , geology , optics , nitrogen , physics , geotechnical engineering , organic chemistry
Near‐infrared reflectance analysis was used to measure protein and moisture contents of UK wheat samples over five harvests (1975–1979 inclusive). The use of universal constants produced stable instrument calibrations valid for both hard and soft varieties and all growing locations in the UK which required no more than an annual bias adjustment except for 1976, a year when unusual climatic conditions prevailed in UK. The universal calibrations were achieved by the statistical selection of stable subsets of wavelengths. The accuracy of the calibrations when compared with classical methods (oven drying and Kjeldahl) was 0.25% or better for both moisture and protein.