Fourier Transform Infrared Spectroscopy with Multivariate Analysis as a Novel Method for Characterizing Alcoholic Strength, Density, and Total Dry Extract in Spirits and Liqueurs

被引：20

作者：

Arzberger, Ulrich ^{[2
]}

Lachenmeier, Dirk W. ^{[1
]}

机构：

[1] CVUA Karlsruhe, D-78187 Karlsruhe, Germany

[2] CVUA Stuttgart, D-70736 Fellbach, Germany

来源：

FOOD ANALYTICAL METHODS | 2008年 / 1卷 / 01期

关键词：

Spirit Drinks; Liqueur; FTIR; Chemometrics; Multivariate Data Analysis; PLS; Total Dry Extract;

D O I：

10.1007/s12161-007-9010-3

中图分类号：

TS2 [食品工业];

学科分类号：

0832 ;

摘要：

Fourier transform infrared (FTIR) spectroscopy allows fast throughput screening of beverages (less than 2 min per sample). Using partial least squares (PLS) regression, it was demonstrated that relative density and alcohol content, which have previously been calibrated only for extract-free spirits, can also be determined in highly viscous liqueur samples. In addition, total dry extract (TDE) was successfully calibrated for the first time for both spirit and liqueur screening. An inter-laboratory validation showed that the standard errors of prediction, ranging between 0.0006 and 0.0078 (relative density), 0.23 and 0.74% vol (alcoholic strength), and 0.55 and 7.53 g/l (TDE), were satisfactory for use of the FTIR-PLS method in the context of screening analysis in official food control of alcoholic beverages.

引用

页码：18 / 22

页数：5

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