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Chemical compound
Isorhamnetin is an O-methylated flavon-ol from the class of flavonoids. A common food source of this 3'-methoxylated derivative of quercetin and its glucoside conjugates are pungent yellow or red onions, in which it is a minor pigment, quercetin-3,4'-diglucoside and quercetin-4'-glucoside and the aglycone quercetin being the major pigments.[1] Pears, olive oil, wine and tomato sauce are rich in isorhamnetin.[2] Almond skin is a rich source of isorhamnetin-3-O-rutinoside and
isorhamnetin-3-O-glucoside, in some cultivars they comprise 75% of the polyphenol content, the total of which can exceed 10 mg/100 gram almond.[3] Others sources include the spice, herbal medicinal[4] and psychoactive Mexican tarragon (Tagetes lucida), which is described as accumulating isorhamnetin and its 7-O-glucoside derivate.[5] Nopal (Opuntia ficus-indica (L.)) is also a good source of isorhamnetin, which can be extracted by supercritical fluid extraction assisted by enzymes.[6]
^Slimestad, R; Fossen, T; Vågen, IM (December 2007). "Onions: a source of unique dietary flavonoids". J. Agric. Food Chem. 55 (25): 10067–80. doi:10.1021/jf0712503. PMID 17997520.
^Holland, Thomas M.; Agarwal, Puja; Wang, Yamin; Leurgans, Sue E.; Bennett, David A.; Booth, Sarah L.; Morris, Martha Clare (2020-01-29). "Dietary flavonols and risk of Alzheimer dementia". Neurology. 94 (16): e1749–e1756. doi:10.1212/WNL.0000000000008981. ISSN 0028-3878. PMC 7282875. PMID 31996451.
^PMID 25544797 PMC4276397
^Céspedes, Carlos L. (2006). "Antifungal and Antibacterial Activities of Mexican Tarragon (Tagetes lucida)". Journal of Agricultural and Food Chemistry. 54 (10): 3521–3527. doi:10.1021/jf053071w. PMID 19127719.
^Abdala, 1999
^Antunes-Ricardo M, Garcia-Cayuela T, Mendiola JA, Ibañez E, Gutierrez-Uribe JA, Cano MP, Guajardo-Flores D (November 2018). "Supercritical CO2 enzyme hydrolysis as a pretreatment for the release of isorhamnetin conjugates from Opuntia ficus-indica (L.) Mill". The Journal of Supercritical Fluids. 141: 21–28. doi:10.1016/j.supflu.2017.11.030. S2CID 103893093.
Isorhamnetin is an O-methylated flavon-ol from the class of flavonoids. A common food source of this 3'-methoxylated derivative of quercetin and its glucoside...
quercetin, kaempferol and isorhamnetin, 3-sophorosides of quercetin and kaempferol and 3-neohesperosides of kaempferol and isorhamnetin. They also contain caffeoylmalic...
often be fatal. Lupanone, lupeol, catechins, epicatechin, quercetin, and isorhamnetin are present in the leaf extract. Ultra-high performance liquid chromatography...
phenolic content. Other flavanols include quercetin, kaempferol, and isorhamnetin derivatives. The major betacyanins identified in globe amaranth are gomphrenin...
Olsson, M.E.; Gustavsson, K.E. & Vågen, I.M. (2010). "Quercetin and isorhamnetin in sweet and red cultivars of onion (Allium cepa L.) at harvest, after...
proanthocyanidins, flavonoid glycosides, such as myricetin, kaempferol, isorhamnetin, and quercetin, and the terpene trilactones ginkgolides and bilobalides...
Kaempferol 3,4′,5,7-tetrahydroxy-2-phenylchromen-4-one OH H OH H H H OH H H Isorhamnetin 3,5,7-trihydroxy-2-(4-hydroxy-3-methoxyphenyl)chromen-4-one OH H OH H...
terpenoids bauerenol and amyrin, and the phenolic compounds syringic acid, isorhamnetin, quercetin, bergenin, 5-(Z-heptadec-4'-enyl)resorcinol and 5-pentadecylresorcinol...
caterpillars contain chemical compounds including (+)-Catechin 7-O-β-glucoside, isorhamnetin 3,7,4′-tri-O-β-glucoside, kaempferol 3,7,4′-tri-O-β-glucoside and quercetin...
plants contain aglycones[clarification needed] apigenin, chrysoeriol, isorhamnetin, kaempferol. V. tricolor is one of many viola plant species containing...
Prosopis species have been found to contain 5-hydroxytryptamine, apigenin, isorhamnetin-3-diglucoside, l-arabinose, quercetin, tannin, and tryptamine. The tannins...
hypericin, pseudohypericin, hyperforin and the flavonoids quercetin and isorhamnetin following single and multiple oral dosing of a hypericum extract containing...
kaempferol, laricitrin, isorhamnetin, and syringetin. In white grapes, the main flavonol is quercetin, followed by kaempferol and isorhamnetin. The delphinidin-like...
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