期刊
FOODS
卷 12, 期 6, 页码 -出版社
MDPI
DOI: 10.3390/foods12061141
关键词
beer; biogenic amines; electro-membrane extraction; gas chromatography-mass spectrometry
In this study, a combination of HF-EME and DLLME followed by GC/MS was applied to analyze the biogenic amines in non-alcoholic beers. The method showed advantages in improving selectivity and enrichment factor, which could help beverage industries to monitor and control the concentration of biogenic amines in beers.
The determination of biogenic amines (BAs) as serious food contaminants and chemical indicators of unwanted microbial contamination or deficient processing conditions in non-alcoholic beers is of great interest for the beverage industries. In the present investigation, the combination of hollow fiber-electro-membrane extraction (HF-EME) and dispersive liquid-liquid microextraction (DLLME) followed by gas chromatography-mass spectrometry (GC/MS) was applied for the analysis of histamine, putrescine, tyramine, cadaverine in non-alcoholic beers. EME is fundamentally based on the electrostatic attraction, diffusion and solvability of analytes in a selected acceptor phase. This membrane-based extraction technique promoted selectivity and the enrichment factor. The DLLME process reduced the volumes of organic solvents and make the coupling of HF-EME to the CG/MS conceivable. The leading variables, which have a great effect on extraction recovery, were optimized. The relative standard deviation was achieved between 4.9 and 7.0%. The recoveries were between 94% and 98%. The limit of detection and limit of quantification were found to be 0.92-0.98 ng mL(-1) and 3.03-3.23 ng mL(-1), respectively. The enrichment factor was calculated in the range 36-41. The achievements revealed that putrescine and tyramine, with concentrations of 3.87 and 2.33 mu g g(-1), were at the highest concentration in non-alcoholic beers. This offered method with great benefits could help beverage industries to monitor the concentration of BAs in beers and control them.
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