Application of Multivariate Analysis of Broadband Transmission Spectra for Calibration of Physico-Chemical Parameters of Wines
https://doi.org/10.21122/2220-9506-2019-10-2-198-206
Abstract
The use of multivariate processing of spectral information has recently been favored due to the express nature of this method, the ease of use of mathematical packages, and the lack of the need to add chemical reagents. The aim of the work is using the methods of multivariate analysis of broadband transmission spectra to calibrate the physicochemical parameters of wines and to improve the accuracy of this calibration by selecting spectral variables.
Using the interval projection to latent structures of the transmission spectra in the range of 220– 2500 nm, the physicochemical characteristics of the varietal unblended Moldovan wine are calibrated. Interval methods of multivariate data analysis allow signifi reducing the root mean square calibration error in comparison with the broadband multivariate methods. Residual predictive deviations exceed the threshold value of 2.5 for K, Ca, Mg, oxalic, malic and succinic acids, 2,3-butylene glycol, ash and phenolic compounds for red wines and Mg, tartaric, citric and lactic acids, 2,3-butylene glycol, ash, phenolic compounds and soluble salts for white wines. These values demonstrate good calibration quality.
The application of the proposed method for calibrating the physicochemical parameters of wines makes it possible to replace traditional methods with spectral measurements, which are available not only in laboratory but also in the fi and characterized by small values of the root mean square error of calibration.
About the Authors
M. A. Khodasevich
Institute of Physics of the National Academy of Science of Belarus
Belarus
Belarus
Address for correspondence: M.A. Khodasevich Institute of Physics of the National Academy of Science of Belarus., Nezavisimosti Ave., 68, Minsk 220072, Belarus. e-mail: m.khodasevich@ifanbel.bas-net.by
E. A. Scorbanov
Scientific and Practical Institute of Horticulture, Viticulture and Food Technologies
Moldova, Republic of
Moldova, Republic of
M. V. Rogovaya
Institute of Physics of the National Academy of Science of Belarus
Belarus
Belarus
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Review
For citations:
Khodasevich M.A., Scorbanov E.A., Rogovaya M.V. Application of Multivariate Analysis of Broadband Transmission Spectra for Calibration of Physico-Chemical Parameters of Wines. Devices and Methods of Measurements. 2019;10(2):198-206. (In Russ.) https://doi.org/10.21122/2220-9506-2019-10-2-198-206
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