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Micellar and microemulsion electrokinetic chromatography of hop bitter acids

✍ Scribed by Szücs, Roman ;Hove, Erik Van ;Sandra, Pat

Publisher
John Wiley and Sons
Year
1996
Tongue
English
Weight
287 KB
Volume
19
Category
Article
ISSN
0935-6304

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✦ Synopsis

Abstract

The elution order of the hop α‐ and β‐acids has been studied under different modes of electrokinetic separation. A model is advanced to explain the shorter migration times of the more hydrophobic β‐acids compared to the α‐acids in micellar electrokinetic chromatography (MEKC). For quality control of the bitter principles in hops, the ruggedness of electrokinetic separation could be improved by replacing MEKC by microemulsion electrokinetic chromatography (MEEKC).

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Stir bar sorptive extraction-liquid desorption applied to the analysis of hop-derived bitter acids in beer by micellar electrokinetic chromatography
✍ André De Villiers; Gerd Vanhoenacker; Fréderic Lynen; Pat Sandra 📂 Article 📅 2004 🏛 John Wiley and Sons 🌐 English ⚖ 122 KB 👁 1 views

## Abstract Stir bar sorptive extraction‐liquid desorption (SBSE‐LD) has been applied as an efficient sample preparation method for the analysis of beer bitter acids. Extracts free of almost all interfering compounds were obtained, allowing simultaneous analysis of iso‐α‐acids and reduced iso‐α‐aci