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Article | Scientists

“Fat can be extracted even from thousand-year-old pottery,” says V. Brychová

Veronika Brychová finds herself peering into the culinary habits of ancient peoples through shards of prehistoric pottery, using fat residues to uncover what our ancestors cooked – and when.
We, 1.5.2024
Akademie věd České republiky
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Scientific article | Food

Determination of Rebaudioside A in Mixed beer, Beer-based Beverages and Lemonades

A fast routine analytical method was developed using HPLC with UV detection for determination of rebaudioside A in mixed beer and lemonade. The HILIC principle was used for separation of steviol glycosides.
Th, 21.1.2021
Kvasný průmysl
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Scientific article | Food

Hops - an abundant source of antioxidants. Methods to assessment of antioxidant activity of hop matrix

The contribution of individual hop compounds to the total antioxidant activity was studied by HPLC method with CoulArray detection in broad scale of the potentials 250-900 mV.
Th, 29.10.2020
Kvasný průmysl
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Scientific article | Food

New Trends in Liquid Chromatography and Their Utilization in Analysis of Beer and Brewery Raw Materials. Part 3. Comparison of HPLC and UHPLC Determination of α- and β -Acids

The traditional method of High Performance LC (HPLC) was compared with the currently increasingly used Ultra- High Performance LC (UHPLC) on a representative group of 11 hop samples.
Th, 22.10.2020
Kvasný průmysl
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Scientific article | Food

New trends in liquid chromatography and their utilization in analysis of beer and brewery raw materials. Part 2. Determination of cis/trans- isomers -iso-α-acids in beer using Ultra Performance Liquid Chromatography

The Ultra High Performance Liquid Chromatography (UHPLC), which uses the principle of separation on sub-2 μm particles, was tested for the separation and determination of steric forms of iso-α-acids in beer.
Th, 15.10.2020
Kvasný průmysl
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Scientific article | Academy

New Trends in Liquid Chromatography and Their Utilization in Analysis of Beer and Brewery Raw Materials. Part 1. Theoretical Introduction

The advantages of UHPLC over the traditional HPLC are a nine-fold reduction of analysis time, double improvement of resolution, and triple improvement of sensitivity.
Mo, 5.10.2020
Kvasný průmysl
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