The processed leaves and stems of Aspalathus linearis contain a new diastereomeric pair of the flavanones, (S)- and (R)-eriodictyol-6-C-β-D-glucopyranoside, which is also formed via the oxidative cyclization of the dihydrochalcone, aspalathin, under conditions which mimic the fermentation process.
Aspalathus linearis; Leguminosae; rooibos tea; phenolic metabolites; flavanone glucoside; fermentation; dihydrochalcone
NCBI PubMed ID: 11021643Publication DOI: 10.1016/s0031-9422(00)00182-5Journal NLM ID: 0151434Publisher: Elsevier
Correspondence: Marais C
; Steenkamp JA
Institutions: Department of Chemistry, University of the Orange Free State, Bloemfontein, South Africa
Methods: 13C NMR, 1H NMR, TLC, ESI-MS, HPLC, extraction, derivatization, evaporation, HR-EI-MS
Found