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A rapid screening method for determining the digestibility of kale using near infrared reflectance
Author(s) -
Allison Michael J.
Publication year - 1983
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.2740340210
Subject(s) - calibration , reflectivity , analytical chemistry (journal) , mathematics , analyser , near infrared spectroscopy , population , wavelength , absorption (acoustics) , standard error , infrared , statistics , chemistry , biological system , chromatography , materials science , biology , optics , physics , optoelectronics , composite material , demography , sociology
A Neotec Scanning Infrared Analyser was used to generate predictive equations for the rapid estimation of kale digestibility. The most successful of these equations gave estimates of digestibility of samples in a calibration population that correlated highly ( r =0.95) with the manual estimates. When this method was applied to additional kale samples, not included in the calibration set, it was again successful in screening for high digestibility, despite lower correlation coefficients and increases in standard errors as compared to the equivalent results for the calibration set. Absorption peaks in the spectral scans of cell wall components were compared with the wavelengths used in the best prediction equation in an attempt to gain a clearer understanding of the factor or factors that limit kale digestibility.