Development of an Untargeted Method for the Analysis of the Volatile Profile of Onions via Solid-Phase Microextraction Arrow-Headspace-Gas Chromatography-Mass Spectrometry Using Design of Experiments

被引:0
作者
Boeckstiegel, Lea [1 ]
Schaumann, Theresa [1 ]
Egert, Bjoern [1 ]
Kulling, Sabine E. [1 ]
Weinert, Christoph H. [1 ]
机构
[1] Fed Res Inst Nutr & Food, Max Rubner Inst, Dept Safety & Qual Fruit & Vegetables, Karlsruhe, Germany
关键词
design of experiments; GC-MS; onions; SPME arrow; volatilomics; MICRO-EXTRACTION; SULFENIC ACIDS; ALLIUM-CEPA; HS-SPME; OPTIMIZATION; COMPONENTS; FRESH; TEMPERATURE; CHIVE; LEEK;
D O I
10.1002/jssc.202400305
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
The distinctive aroma of onions, consisting primarily of sulfur-containing compounds, is one of the reasons for the popularity of the vegetable. The rapid enzymatic and chemical reactions that occur after the destruction of onion bulb tissue render the analysis of the volatile profile challenging. Therefore, sample preparation is a crucial step in the analysis of the onion volatilome, but it often does not receive the necessary attention in the literature. In this work, we focused on two aspects: Firstly, we compared different sample preparation approaches to maximize the volatile yield and to enable the description of the onion volatile profile as it would emerge after a solid-phase microextraction (SPME) Arrow sampling procedure. For headspace (HS)-gas chromatography-mass spectrometry analysis, onion juice with the addition of an ammonium sulfate solution proved to be the best option. Secondly, we optimized the HS sampling and desorption parameters (enrichment time, enrichment temperature, agitator speed, desorption time) for onion volatiles using the efficient design of experiments (DoE) approach. The optimal conditions for the analysis with HS-SPME Arrow were an enrichment time of 75 min at 60 degrees C with an agitator speed of 713 rpm and a desorption time of 120 s.
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页数:12
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