Non-destructive determination of ethanol levels in fermented alcoholic beverages using Fourier transform mid-infrared spectroscopy

Chemistry Central Journal
Ayalew DebebeBhagwan Singh Chandravanshi

Abstract

Traditional fermented alcoholic beverages are indigenous to a particular area and are prepared by the local people using an age-old techniques and locally available raw materials. The main objective of this work was the direct determination of ethanol in traditional fermented alcoholic beverages using mid infrared spectroscopy with partial least squares regression, verifying the robustness of the calibration models and to assess the quality of beverages. The level of ethanol determination in Ethiopian traditional fermented alcoholic beverages was done using mid infrared spectroscopy with partial least squares regression (MIR-PLS). The calibration and validation sets, and real samples spectra were collected with 32 scans from 850-1200 cm(-1). A total of 25 synthetic standards (calibration and validation sets) with ethanol (2-10% w/w) and sugars (glucose, fructose, sucrose and maltose) (0-5% w/w) compositions were used to construct and validate the models. Twenty-five different calibration models were validated by cross-validation approach with 25 left out standards. A large number of pre-treatments were verified, but the best pre-treatment was subtracting minimum + 2nd derivative. The model was found to have the highest coeffici...Continue Reading

References

Aug 3, 2007·Journal of Automated Methods & Management in Chemistry·R NagarajanM M Bajaj
Aug 29, 2007·Analytica Chimica Acta·Fernando A IñónMiguel de la Guardia
Aug 30, 2007·Journal of Chromatographic Science·Roberto Rodríguez Madrera, Belén Suárez Valles
Oct 31, 2008·Talanta·Alejandra UrtubiaEduardo Agosin
Mar 23, 2011·Food Science and Technology International = Ciencia Y Tecnología De Los Alimentos Internacional·E PuértolasJ Raso
Jun 1, 2012·Journal of Analytical Methods in Chemistry·Qingbo FuChun Zhao

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Citations

Nov 8, 2018·Journal of Analytical Methods in Chemistry·Ayalew DebebeEstifanos Ele
Dec 14, 2021·FEMS Yeast Research·Pamela Magalí BermejoAndreas Karoly Gombert

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Methods Mentioned

BETA
light scattering

Software Mentioned

Math Lab
Origin Lab - Origin
NIR
PLSR
MIR

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