Journal of Apicultural Research | Vol. 42 (1-2) pp. 16 - 20 |
Date | June 2003 |
Article Title |
Determination of honey quality components by near infrared reflectance spectroscopy |
Author(s) | D Cozzolino and E Corbella |
Abstract | Near infrared reflectance spectroscopy (NIRS) was used to assess the chemical composition of fresh honey samples. Samples (n = 110) from different locations across Uruguay were scanned in transreflectance (0.2 mm path - length) in a NIRS 6500 monochromator in both the visible and near infrared region (400-2500 nm). Prediction equations were developed using modified partial least squares and cross validation was applied to avoid overfitting. Calibrations for water content (g kg-I), pH, electrical conductivity (mS/cm); colour (mm Pfund) and hydroxymethylfurfural (mg kg-I) yielded a coefficient of determination in calibration (R2CAL and standard error in cross validation of 0.96 (SECY: 31); 0.88 (SECY: 0.21); 0.94 (SECY: 0.07); 0.98 (SECY: 4.7) and 0.67 (SECY: 3.9), respectively. It is concluded that NIRS is a useful method to evaluate chemical composition on fresh honey samples. |
Keywords | honey, near infrared reflectance, water content, HMF, electrical conductivity, colour, pH |
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