Determination of Volatiles in Beer using Solid-Phase Microextraction in Combination with Gas Chromatography / Mass Spectrometry

Content Provider	Semantic Scholar
Author	Kleinová, Jana Klejdus, Bořivoj
Copyright Year	2014
Abstract	Kleinová J., Klejdus B. (2014): Determination of volatiles in beer using solid-phase microextraction in combination with gas chromatography/mass spectrometry. Czech J: Food Sci., 32: 241–248. Headspace solid phase microextraction and purge and trap analysis were used for the determination of volatiles in beer. These methods were compared with the analysis of unconcentrated gas phase and liquid extraction. Solid phase microextraction proved to be the most useful and was investigated more closely. Volatiles were isolated by the means of different combinations of sorbents, sorption was performed at various temperatures and times. The addition of salt to the sample and stirring of the sample were examined to enhance the analyte concentration in the gas phase. Ultrasonic bath and filtration were tested to remove carbon dioxide. Not all methods improved the sorption of volatiles. Stirring was characterised by low repeatability and ultrasonic bath causes to the loss of volatile analytes. Distribution constants of volatiles depend on their boiling points and thus different sorption temperatures are suitable for different substances.
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Alternate Webpage(s)	http://www.agriculturejournals.cz/publicFiles/124067.pdf
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Language	English
Access Restriction	Open
Subject Keyword	Carbon Dioxide Gas Chromatography-Mass Spectrometry Gases Neural gas Repeatability Salt (cryptography) Solid Phase Microextraction Ultrasonics (sound) Volatile memory analyte filtration
Content Type	Text
Resource Type	Article