Exploring the regional typicality of Australian Shiraz wines using untargeted metabolomics was written by Li, S.;Blackman, J. W.;Schmidtke, L. M.. And the article was included in Australian Journal of Grape and Wine Research in 2021.COA of Formula: C9H10O3 This article mentions the following:
Shiraz is the most widely planted winegrape cultivar in Australia. Sensory studies have indicated that different grapegrowing regions in Australia produce distinct styles of Shiraz wines that differ in flavor characteristics. The current project aimed to characterize the underlying volatile composition associated with regional Shiraz wine styles. Wines were selected from six geog. distinct regions and the volatile compounds were analyzed using gas chromatog. time-of-flight mass spectrometry to provide a comprehensive and holistic overview of the wine volatilome. A suite of R language based software enabled feature extraction and importance ranking, following an untargeted metabolomics approach. A classification model based on the random forests algorithm using the 80 most important compounds correctly associated all samples to regions. A range of these compounds, including terpenoids, benzenoids, esters, furan derivatives and aliphatic alcs., has been associated with grape composition, winemaking influences and the ageing process. The results suggest that the regional compositional differences in varietal wines may be influenced by all processes in the entire wine production chain. The current study highlighted the chem. basis underlying the regional typicality of Australian Shiraz wines, and identified specific volatile compounds that may be associated with a region. In the experiment, the researchers used many compounds, for example, Ethyl 2-hydroxybenzoate (cas: 118-61-6COA of Formula: C9H10O3).
Ethyl 2-hydroxybenzoate (cas: 118-61-6) belongs to esters. Volatile esters with characteristic odours are used in synthetic flavours, perfumes, and cosmetics. Certain volatile esters are used as solvents for lacquers, paints, and varnishes. Esters are more polar than ethers but less polar than alcohols. They participate in hydrogen bonds as hydrogen-bond acceptors, but cannot act as hydrogen-bond donors, unlike their parent alcohols. This ability to participate in hydrogen bonding confers some water-solubility.COA of Formula: C9H10O3
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics