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The phenolic composition of herbal tea (HT) and hydromethanolic extract (HME) obtained from Grindelia robusta Nutt. was studied by HPLC-DAD-ESI/MS n . Thirty six flavonoids and hydroxycinnamic acids were detected, from which thirty are described for the first time in this species. Quantification by HPLC-DAD showed that diosmetin-7-O-glucuronide-3′-O-pentoside+apigenin-7-O-glucuronide-4′-O-pentoside,...
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