Major components of honey analysis by near-infrared transflectance spectroscopy

被引:48
作者
García-Alvarez, M
Huidobro, JF [1 ]
Hermida, M
Rodríguez-Otero, JL
机构
[1] Univ Santiago, Fac Farm, Area Nutr & Bromatol, Santiago De Compostela 15706, Galicia, Spain
[2] Diputac Prov Pontevedra, Lab Mouriscade, Lalin 36500, Galicia, Spain
[3] Univ Santiago, Fac Vet, Inst Invest & Anal Alimentos, Lugo 27002, Galicia, Spain
关键词
D O I
10.1021/jf000170v
中图分类号
S [农业科学];
学科分类号
09 ;
摘要
NIR transflectance spectroscopy was used to analyze fructose, glucose, and moisture in honey. A total of 161 honey samples were collected during 1992 (46), 1995 (58), and 1996 (57). Samples were analyzed by instrumental, enzymatic (fructose and glucose), and refractometric (moisture) methods. Initially, different calibrations were performed for each of the 3 years of sampling. Good predictions were obtained for all three components with equations of the particular year. But good predictions were not always obtained when the equations calculated one year were applied to samples from another year. To perform a lasting calibration, unique calibration (121 samples) and validation (40 samples)sets were built; honeys of the 3 years were included in both sets. Good statistics (bias, standard error of validation (SEV), and R-2) Were Obtained for all three components of the validation set. No statistically significant differences (p = 0.05) were found between instrumental and reference methods.
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页码:5154 / 5158
页数:5
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