Isolation of two novel terpenoid glucose esters from Riesling wine

被引:39
作者
Bonnländer, B [1 ]
Baderschneider, B [1 ]
Messerer, M [1 ]
Winterhalter, P [1 ]
机构
[1] Univ Erlangen Nurnberg, Inst Pharm & Lebensmittelchem, D-91052 Erlangen, Germany
关键词
(E)-2,6-dimethyl-6-hydroxyocta-2,7-dienoic acid glucose ester; (2E,6E)-10,11-dihydroxy-3,7,11-trimethyl-2,6-dodecadienoic acid glucose ester; aroma precursor; wine lactone; multilayer coil countercurrent chromatography; Riesling wine;
D O I
10.1021/jf9706033
中图分类号
S [农业科学];
学科分类号
09 ;
摘要
A glycosidic isolate of Riesling wine was separated with multilayer coil countercurrent chromatography (MLCCC). After acetylation and subsequent purification by high-performance liquid chromatography (HPLC), the glucose esters of (E)-2,6-dimethyl-6-hydroxyocta-2,7-dienoic acid (1) and (2E,6E)-10,11-dihydroxy-3,7,11-trimethyl-2,6-dodecadienoic acid (2) were identified for the first time as nine constituents. The identification was achieved by mass spectrometry (DCI-MS) as well as nuclear magnetic resonance spectroscopy (H-1 NMR, C-13 NMR, COSY, HMBC). In biomimetic studies carried out with (E)-2,6-dimethyl-6-hydroxyocta-2,7-dienoic acid the potent nine aroma compound 3a,4,5,7a-tetrahydro-3,6-dimethylbenzofuran-2(3H)-one (wine lactone) was formed, thus revealing an important aroma precursor function for glucoconjugate 1.
引用
收藏
页码:1474 / 1478
页数:5
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