<br/>Monoterpenes are important characteristic compounds for aromatic white wines, including Riesling. However monoterpene enantiomers have been little explored. Monoterpenes originate from grapes and are effected by climate, clone etc. Therefore enantiomers may differ based on region and style and may be used for Riesling wine authentication. Fifty four commercial Riesling wines in three wine styles (dry, medium dry, medium sweet) were collected from four well established regions including Germany, France, New York, and Oregon. Thirteen monoterpene isomers were identified and quantitated by SPME-MDGC-MS in these Riesling wines. Significant differences were found on 9 out of 13 isomer contents among different regions and 8 out of 13 isomers among styles. The results of enantiomer fractions showed that wines from Germany were significantly different from other regions; in addition, there is no style effect on enantiomer fraction. The study suggests that wines from different regions and styles could be differentiated by monoterpene isomer profiles.

Chemo-diversity in monoterpene enantiomers from Riesling wines from different regions and wine styles

254th National Meeting (2017)

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