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AB71410-EN 0716S-B3
Overview:
Beers from the Czech Republic are renowned for their refreshing taste and quality.
Czech beer is often classified as 10°, 11°, or 12°. This notation refers to the amount of
sugars present in the liquid extract (wort), prior to fermentation that may later be
transformed into alcohol by yeast. Analysis of beer is required for accurate,
reproducible production and labeling.
This method looks at Fourier transform near-infrared (FT-NIR) spectroscopy, which is a
rapid and robust technique, demonstrating its capacity to rapidly and accurately
measure and predict multiple components simultaneously.
Method:
A Thermo Scientific
™
Antaris
™
II FT-NIR analyzer was used to generate spectra for
86 degassed beer samples. Spectra were analyzed quantitatively for four components;
these were alcohol, original gravity (density), real extract and apparent extract, using a
Partial Least Squares (PLS) method.
Conclusion:
Antaris FT-NIR Analyzer successfully predicted both qualitative as well as quantitative
parameters from a single data collection taking 20 seconds.
The four components: alcohol content, original gravity, real extract, and apparent
extract were correctly predicted with correlation coefficients better than 0.990 and low
root mean square errors indicating the model is appropriate and robust.
The method is rapid and without the need for sample preparation.
Read the full application noteFT-NIR Analysis of Czech Republic Beer:
A Qualitative and Quantitative Approach
Gabriela Budinova, Ph.D., Quintiles GesmbH, Czech Republic, Europe
Ivor Dominak, Ph.D., NICODOM Ltd, Czech Republic, Europe
Todd Strother, Ph.D., Thermo Fisher Scientific, Madison, WI, USA
Application Summary AN 51702