Key points are not available for this paper at this time.
The stability of the major flavonol glucosides, quercetin 3,4‘-O-diglucoside (QDG) and quercetin 4‘-O-monoglucoside (QMG), was studied in two varieties of onion (Red Baron and Crossbow) that were cured and stored for 6 months under normal commercial conditons and analyzed at regular intervals. Onions were also cooked by boiling in water and by frying in oil under normal domestic conditions. Apart from a 50% loss of quercetin 4‘-O-monoglucoside during the initial drying process, little change in content and composition was observed over 6 months of storage. Neither boiling nor frying resulted in interconversion of the quercetin conjugates or production of free quercetin, although a 25% loss overall was recorded for each process. Keywords: Onion; Allium cepa; flavonol; quercetin; glucoside; HPLC; storage; processing
Price et al. (Sat,) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: