Wiczkowski W., Romaszko J., Bucinski A., Szawara-Nowak D., Honke J., Zielinski H., Piskula M.K. (2008) Quercetin from shallots (Allium cepa L. var. aggregatum) is more bioavailable than its glucosides. J Nutr 138:885-8 PubMed (18424596)

Plasma analysed after enzymatic deconjugation

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Plasma Concentration (┬Ámol/L)
Number Dose Multiple Dose Duration Time (hours) Polyphenol Source
Name as described in publication
0 1 2 3 12 24
1 1.4 mg/kg bw Single Dose 0 0.8 0.9 0.8 0.5 0.2
shallot flesh
2 1.4 mg/kg bw Single Dose 0 1.1 1.8 3.9 0.9 0.2
dry shallot skin
L)&chxp=1,50|3,50&chd=t:0.0,1.0,2.0,3.0,12.0,24.0|0.0,0.8,0.9,0.8,0.5,0.2|0.0,0.5,1.0,3.0,12.0,24.0|0.0,1.1,1.8,3.9,0.9,0