Objective: A method for rapid analysis of the refining process of honey was developed based on near-infrared (NIR) spectroscopy.
Methods: Partial least square calibration models were built for the four components after the selection of the optimal spectral pretreatment method and latent factors.
Results: The models covered the samples of different temperatures and time points, therefore the models were robust and universal.
Conclusions: These results highlighted that the NIR technology could extract the information of critical process and provide essential process knowledge of the honey refining process.
Summary: A method for rapid analysis of the refining process of honey was developed based on near-infrared (NIR) spectroscopy. Abbreviation used: NIR: Near-infrared; 5-HMF: 5-hydroxymethylfurfural; RMSEP: Root mean square error of prediction; R: correlation coefficients; PRESS: prediction residual error-sum squares; TCM: Traditional Chinese medicine; HPLC: High-performance liquid chromatography; HPLC-DAD: HPLC-diode array detector; PLS: Partial least square; MSC: multiplicative scatter correction; RMSECV: Root mean square error of cross validation; RPD: Residual predictive deviation; 1D: 1st order derivative; SG: Savitzky-Golay smooth; 2D: 2nd order derivative.
Keywords: Honey; near-infrared; partial least; rapid analysis; refining process; squares.