Abstract
The development and application of valuable analytical tools suitable for the varietal authentication of premium red wines are matters of interest in order to avoid fraud. In this study, an HPLC-MS procedure has been developed using trifluoroacetic acid as an acid modifier in the mobile phase. This method may be used as a routine method using UV-vis detection and allows the simultaneous analysis of the structural features of anthocyanins by MS under the same chromatographic conditions. Twenty different anthocyanins have been detected in 19 different samples of both grape extracts and wines. Cis and trans isomers of p-coumaryl derivatives have been identified for the first time. Important qualitative and quantitative differences among cultivars have been detected.
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Claims 4
Claim · model-written summary
Twenty different anthocyanins were detected in grape extracts and wines.
Verbatim
e0“Twenty different anthocyanins have been detected in 19 different samples of both grape extracts and wines”
Claim · model-written summary
Cis and trans isomers of p-coumaryl derivatives were identified for the first time in grape and wine anthocyanins.
Verbatim
e1“Cis and trans isomers of p-coumaryl derivatives have been identified for the first time”
t0“Analysis of Grape and Wine Anthocyanins”
Claim · model-written summary
Grape cultivars differed qualitatively and quantitatively in their anthocyanin profiles.
Verbatim
e2“Important qualitative and quantitative differences among cultivars have been detected”
t0“Analysis of Grape and Wine Anthocyanins”
Claim · model-written summary
The HPLC-MS method allows simultaneous analysis of the structural features of anthocyanins by MS.
Not reportedComparatorValue
Verbatim
e3“allows the simultaneous analysis of the structural features of anthocyanins by MS”
t0“Analysis of Grape and Wine Anthocyanins”