Determination of trans-2-nonenal in barley grain, malt and beer

Svoboda, Z.,Vyzkumny Ustav Pivovarsky a Sladarsky, Brno . Sladarsky Ustav; Mikulikova, R.,Vyzkumny Ustav Pivovarsky a Sladarsky, Brno . Sladarsky Ustav; Belakova, S.,Vyzkumny Ustav Pivovarsky a Sladarsky, Brno . Sladarsky Ustav; Benesova, K.,Vyzkumny Ustav Pivovarsky a Sladarsky, Brno . Sladarsky Ustav; Marova, I.,Vysoke Uceni Technicke, Brno . Fakulta Chemicka; Nesvadba, Z.,Agrotest Fyto, Kromeriz

Determination of trans-2-nonenal in barley grain, malt and beer

2010

Svoboda, Z.,Vyzkumny Ustav Pivovarsky a Sladarsky, Brno (Czech Republic). Sladarsky Ustav | Mikulikova, R.,Vyzkumny Ustav Pivovarsky a Sladarsky, Brno (Czech Republic). Sladarsky Ustav | Belakova, S.,Vyzkumny Ustav Pivovarsky a Sladarsky, Brno (Czech Republic). Sladarsky Ustav | Benesova, K.,Vyzkumny Ustav Pivovarsky a Sladarsky, Brno (Czech Republic). Sladarsky Ustav | Marova, I.,Vysoke Uceni Technicke, Brno (Czech Republic). Fakulta Chemicka | Nesvadba, Z.,Agrotest Fyto, Kromeriz (Czech Republic)

The aim of this study was to optimize and introduce automated solid phase microextraction technique coupled with gas chromatography in order to determine trans-2-nonenal in beer and brewing materials. Five types of SPME fibers coated with different stationary phases (100 microm PDMS, 65 microm PDMS/DVB, 85 microm CAR/PDMS, 50/30 microm DVB/CAR/PDMS, 85 microm PA) were tested for their efficiencies in the headspace SPME. The highest HS-SPME extraction efficiency was achieved with the PDMS/DVB fiber and addition of 1.5 g of NaCl. The extraction time was 20 minutes at 60 deg C. Trans-2-nonenal was identified with the method of HS-SPME-GC-MS; the samples were analyzed using the HS-SPME-GC-FID technique.

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