Jerković Igor, Marijanović Zvonimir, Serreli Gabriele, Tuberoso Carlo Ignazio Giovanni
Department of Organic Chemistry, Faculty of Chemistry and Technology, University of Split, R. Boškovića 35, 21000, Split, Croatia.
Department of Food Technology and Biotechnology, Faculty of Chemistry and Technology, University of Split, R. Boškovića 35, 21000, Split, Croatia.
Chem Biodivers. 2018 Oct;15(10):e1800254. doi: 10.1002/cbdv.201800254. Epub 2018 Sep 10.
Late harvest (LHW) and ice harvest (IHW) Gewürztraminer wine samples from Croatia (Ilok) were investigated. Their technological parameters, chromaticity coordinates, total phenols content, and antioxidant capacity were determined. 5-(Hydroxymethyl)furfural, xanthine, and trans-caftaric acid were analyzed in the samples by high performance liquid chromatography (HPLC-DAD). Headspace solid-phase microextraction (HS-SPME) followed by gas chromatography and mass spectrometry (GC/MS) analysis revealed isoamyl alcohol as predominant compound (21.25 - 60.30%). Diethyl succinate, 2-phenylethanol, and benzaldehyde were also abundant. Ethyl octanoate (1.48 - 5.70%) and ethyl caprate (0.48 - 4.83%) decreased significantly in LHW, being the lowest in IHW. Two solvents were applied for the samples extraction (solvent A - pentane/diethyl ether 1:2 (v/v) and solvent B - dichloromethane), and the extracts were analyzed by GC/MS. Ethyl hydrogen succinate (solvent A: 27.30 - 52.04%; solvent B: 28.04 - 46.69%) and diethyl succinate (solvent A: 5.21 - 18.2%; solvent B: 2.66 - 7.72%) were predominant in IHW and LHW. Aromatic alcohols were also found: 2-phenylethanol (solvent A: 7.07 - 21.09%; solvent B: 5.50 - 11.82%), 4-hydroxybenzyl alcohol (solvent A: 1.45 - 6.68%; solvent B: 2.47 - 12.16%) and benzyl alcohol (solvent A: 0.10 - 0.77%). The obtained results complement a previous study on IHW (Gewürztraminer) from Croatia providing new features and indicating great chemical diversity among the samples.
对来自克罗地亚伊洛克（Ilok）的晚收（LHW）和冰酒（IHW）琼瑶浆葡萄酒样品进行了研究。测定了它们的工艺参数、色度坐标、总酚含量和抗氧化能力。采用高效液相色谱法（HPLC-DAD）对样品中的5-（羟甲基）糠醛、黄嘌呤和反式咖啡酸进行了分析。顶空固相微萃取（HS-SPME）结合气相色谱-质谱联用（GC/MS）分析表明，异戊醇是主要成分（21.25%-60.30%）。琥珀酸二乙酯、2-苯乙醇和苯甲醛也含量丰富。LHW中辛酸乙酯（1.48%-5.70%）和癸酸乙酯（0.48%-4.83%）显著降低，在IHW中最低。使用两种溶剂对样品进行萃取（溶剂A-戊烷/乙醚1:2（v/v）和溶剂B-二氯甲烷），并通过GC/MS对萃取物进行分析。琥珀酸氢乙酯（溶剂A：27.30%-52.04%；溶剂B：28.04%-46.69%）和琥珀酸二乙酯（溶剂A：5.21%-18.2%；溶剂B：2.66%-7.72%）在IHW和LHW中占主导地位。还发现了芳香醇：2-苯乙醇（溶剂A：7.07%-21.09%；溶剂B：5.50%-11.82%）、4-羟基苄醇（溶剂A：1.45%-6.68%；溶剂B：2.47%-12.16%）和苄醇（溶剂A：0.10%-0.77%）。所得结果补充了先前对克罗地亚IHW（琼瑶浆）的研究，提供了新的特征，并表明样品之间具有很大的化学多样性。
