The Australian Wine Research Institute, PO Box 197, Glen Osmond (Adelaide), SA 5064, Australia; University of South Australia, School of Pharmacy and Medical Science, GPO Box 2471, Adelaide, SA 5001, Australia.
The Australian Wine Research Institute, PO Box 197, Glen Osmond (Adelaide), SA 5064, Australia.
Food Chem. 2018 Aug 1;256:85-90. doi: 10.1016/j.foodchem.2018.02.094. Epub 2018 Feb 17.
(Z)-6-Dodeceno-γ-lactone is a potent aroma compound that has been little studied and its prevalence in wines is unknown. An efficient stable isotope dilution assay was developed using a simple, direct immersion solid-phase microextraction and gas chromatography-tandem mass spectrometry method suitable for routine use with a low ng/L limit of quantitation. Using this method, 99 out of 104 young white wines analysed were found to contain detectable (Z)-6-dodeceno-γ-lactone. The highest concentrations were found in Riesling and Viognier wines. (Z)-6-Dodeceno-γ-lactone was found to have an aroma detection threshold of 700 ng/L in a neutral white wine. This study established that (Z)-6-dodeceno-γ-lactone is widely present in Australia's most popular white wine varieties, but generally at concentrations below its aroma detection threshold.
(Z)-6-十二烯-γ-内酯是一种有强烈香气的化合物，但目前对其研究甚少，其在葡萄酒中的存在情况也未知。本研究开发了一种高效的同位素稀释分析方法，该方法采用简单的直接浸入式固相微萃取和气相色谱-串联质谱法，适合常规使用，定量限低至 ng/L。使用该方法，分析的 104 种白葡萄酒中有 99 种被发现含有可检测到的（Z）-6-十二烯-γ-内酯。其浓度最高的葡萄酒为雷司令和维欧尼葡萄酒。（Z）-6-十二烯-γ-内酯在中性白葡萄酒中的香气检测阈值为 700ng/L。本研究表明，（Z）-6-十二烯-γ-内酯广泛存在于澳大利亚最受欢迎的白葡萄酒品种中，但通常浓度低于其香气检测阈值。
