Dumlao Morphy C, Jiang Liang, Bhattacharyya Saroj Kumar, Donald William A, Steel Christopher C, Schmidtke Leigh M
Gulbali Institute, Charles Sturt University, Wagga, NSW 2650, Australia.
The Australian Research Council Training Centre for Innovative Wine Production, University of Adelaide (Waite Campus), Urrbrae, SA 5064, Australia.
Molecules. 2024 Dec 23;29(24):6053. doi: 10.3390/molecules29246053.
The most commonly used methods to chemically assess grape and wine quality with high sensitivity and selectivity require lengthy analysis time and can be resource intensive. Here, we developed a rapid and non-destructive method that would help in grading and decision support. In this work, we demonstrate that integrating a three-dimensional (3D) material for volatile sampling with mass spectrometry detection can be used to sample grapes for phytosanitary, quality or smoke-taint assessments at low levels of marker compounds. An efficient zeolitic imidazolate framework-8 (ZIF-8) material was synthesised in situ on nickel foam (NF), taking advantage of its ultrahigh surface area, structural diversity, and functionality as an emerging nanostructured material for preconcentrating low-level wine and grape quality-related volatiles. When used as a sorbent in thermal desorption tubes and coupled directly to active capillary mass spectrometry, the average signal across the selected analytes increased by ~50% as compared to Tenax TA, a commercially available polymer, in a measurement that takes less than two minutes. The first integration of 3D materials into mass spectrometry opens new possibilities for developing new material architecture with enhanced selectivity of next-generation multifunctional instrumentation for volatile analysis and product quality assessment.
目前，用于化学评估葡萄和葡萄酒品质的最常用方法，要达到高灵敏度和高选择性，需耗费较长的分析时间，且资源消耗大。在此，我们开发了一种快速且无损的方法，有助于进行分级和决策支持。在本研究中，我们证明将用于挥发性物质采样的三维（3D）材料与质谱检测相结合，可用于在低水平标记化合物下对葡萄进行植物检疫、品质或烟熏污染评估采样。利用其超高的表面积、结构多样性以及作为一种新兴的纳米结构材料对低水平葡萄酒和葡萄品质相关挥发性物质进行预浓缩的功能，在泡沫镍（NF）上原位合成了一种高效的沸石咪唑酯骨架-8（ZIF-8）材料。当用作热脱附管中的吸附剂并直接与活性毛细管质谱联用，与市售聚合物Tenax TA相比，在不到两分钟的测量中，所选分析物的平均信号增加了约50%。将3D材料首次集成到质谱中，为开发具有更高选择性的新一代多功能挥发性分析和产品质量评估仪器的新材料架构开辟了新的可能性。
