Vintage identification of sauce-flavor liquor based on fluorescence spectroscopy
Main Article Content
Keywords
vintage identification, sauce-flavor liquor, fluorescence spectroscopy, online testing platform
Abstract
The vintage of sauce-flavor liquor represents its collection value and grade, so its identification is essential for collectors and connoisseurs. In this research, a vintage identification model for sauce-flavor liquors was proposed based on the fluorescence spectroscopy method. A fluorescence spectrophotometer was used to measure the fluorescence spectrum of sauce-flavor liquors of different years, and the optimum emission peaks of the spectrum were obtained. By analyzing these optimum emission peaks, it was determined that intensity of the spectrum increased with the vintage of sauce-flavor liquor. A prediction model was established to identify quantitatively the vintage of sauce-flavor liquor according to spectrum intensity, and its coefficient of determination (R2) was 0. 995. The prediction model was verified with an average error of 0.06 years. Moreover, an online testing platform was designed to realize the real-time, rapid, and quantitative vintage identification of sauce-flavor liquors. The model and platform should be helpful for evaluating sauce-flavor liquor.
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