TY - JOUR TT - VALIDATION OF NIR (NEAR-INFRARED SPECTROSCOPY) METHOD FOR ALCOHOLIC STRENGTH MEASUREMENT IN ALCOHOLIC BEVERAGES: COMPARISON OF DIFFERENT METHODS AU - Darıcı, Merve AU - Cabaroğlu, Turgut PY - 2018 DA - January JF - Gıda JO - GIDA PB - The Association of Food Technology WT - DergiPark SN - 1300-3070 SP - 90 EP - 100 VL - 43 IS - 1 KW - NIR spektroskopisi KW - etil alkol KW - piknometre KW - dansimetre KW - metot validasyonu KW - ölçüm belirsizliği N2 - Alcohol contentis an obligatory parameter in the production of alcoholic beverages for boththe need of a constant quality in alcoholic beverages industry and from thepoint of view of legislative and taxation regulations. In this research,pycnometric method as the reference method, electronic densimetry method and NIR methods have been studied forthe measurement of the alcohol strength. Wine and raki as the matrix of twodifferent alcoholic beverages are evaluated with single-laboratory validationusing these methods. Performance ofNIR spectroscopy was evaluated with comparing validation parameters of othermethods. The repeatability (%RSDr) of NIR method is %0.05 in bothmatrices, RSDr of pycnometric method is %0.31 for wine and is %0.14for raki, RSDr of densimetric method is %0.72 for wine and is %0.44for raki have been determined for alcoholic strength. Recovery for NIR methodin two different alcoholic solutions is %98. There are no significantdifferences among the alcoholic strengths depending on different methods insamples of raki and wine. Among the methods, NIR method is more reliable depending on precision parameters. CR - (1) Magnusson B., Örnemark U. (Eds.), 2014. Eurachem Guide: The Fitness for Purpose of Analytical Methods – A Laboratory Guide to Method Validation and Related Topics, 2nd edition, ISBN 978-91-87461-59-0, Eurachem www.eurachem.org. CR - (2) Yılmaz, A., 2013. Kimyasal Analizlerde Metot Validasyonu ve Verifikasyonu. 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