(S)- and (R)-eriodictyol-6-C-beta-D-glucopyranoside, novel keys to the fermentation of rooibos (Aspalathus linearis).
The processed leaves and stems of Aspalathus linearis contain a new diastereomeric pair of the flavanones, (S)- and (R)-eriodictyol-6-C-beta-D-glucopyranoside, which is also formed via the oxidative cyclization of the dihydrochalcone, aspalathin, under conditions which mimic the fermentation process.
Marais
C
C
Department of Chemistry, University of the Orange Free State, Bloemfontein, South Africa. maraisc@frm.uovs.ac.za
van Rensburg
W J
WJ
Ferreira
D
D
Steenkamp
J A
JA
D007887:Fabaceae / Q000378:metabolism*; D005285:Fermentation; D044950:Flavanones; D005419:Flavonoids / Q000737:chemistry / Q000378:metabolism*; D005960:Glucosides / Q000737:chemistry / Q000378:metabolism*; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D015394:Molecular Structure; D010946:Plants, Medicinal; D013237:Stereoisomerism
D044950:Flavanones; D005419:Flavonoids; D005960:Glucosides; C419352:eriodictyol-6-C-glucopyranoside