Quercitrin Explained
Quercitrin is a glycoside formed from the flavonoid quercetin and the deoxy sugar rhamnose.
Austrian chemist Heinrich Hlasiwetz (1825-1875) is remembered for his chemical analysis of quercitrin.
It has also been investigated as a potential dietary supplement.[1]
Occurrence
Quercitrin is a constituent of the dye quercitron. It can be found in Tartary buckwheat (Fagopyrum tataricum)[2] and in oaks species like the North American white oak (Quercus alba) and English oak (Quercus robur).[3] It is also found in Nymphaea odorata or Taxillus kaempferi.[4]
Metabolism
The enzyme quercitrinase catalyzes the chemical reaction between quercitrin and H2O to yield L-rhamnose and quercetin.
Notes and References
- Audah KA, Ettin J, Darmadi J, Azizah NN, Anisa AS, Hermawan TDF . etal. Indonesian Mangrove Sonneratia caseolaris Leaves Ethanol Extract Is a Potential Super Antioxidant and Anti Methicillin-Resistant Staphylococcus aureus Drug. . Molecules . 2022 . 27 . 23 . 8369. 36500458 . 10.3390/molecules27238369 . free. 9735687 .
- Tartary Buckwheat (Fagopyrum tataricum Gaertn.) as a Source of Dietary Rutin and Quercitrin. Nina Fabjan, Janko Rode, Iztok Jože Košir, Zhuanhua Wang, Zheng Zhang and Ivan Kreft, J. Agric. Food Chem., 2003, 51 (22), pp. 6452–6455,
- Analysis of oak tannins by liquid chromatography-electrospray ionisation mass spectrometry. Pirjo Mämmelä, Heikki Savolainen, Lasse Lindroos, Juhani Kangas and Terttu Vartiainen, Journal of Chromatography A, Volume 891, Issue 1, 1 September 2000, Pages 75-83,
- The constituents of Taxillus kaempferi and the host, Pinus thunbergii. I. Catechins and flavones of Taxillus kaempferi. Konishi T, Nishio T, Kiyosawa S, Fujiwara Y and Konoshima T, Yakugaku Zasshi., February 1996, volume 116, issue 2, pages 148-157 (article in Japanese),
