Adaptation of a targeted HILIC–MS method to untargeted metabolomics.
HILIC–MS untargeted method validation for wine metabolomics.
Slightly sub-optimum storage conditions had a major impact in wine metabolome.
4-Amino-heptanedioic acid was annotated for the first time in wine.
4-Amino-heptanedioic acid was a marker for wine sub-optimum storage conditions.