Miquelianin (
quercetin 3-''O''-glucuronide) is a
flavonol glucuronide, a type of phenolic compound present in wine, in species of
St John's wort, like ''
Hypericum hirsutum
''Hypericum hirsutum'' is a species of flowering plant in the family Hypericaceae, commonly known as hairy St John's-wort. It is found in Western Europe.
Description
''Hypericum hirsutum'' is a downy perennial plant that grows to two or three f ...
'', in ''
Nelumbo nucifera'' (Indian lotus) or in
green bean
Green beans are young, unripe fruits of various cultivars of the common bean ('' Phaseolus vulgaris''), although immature or young pods of the runner bean (''Phaseolus coccineus''), yardlong bean ( ''Vigna unguiculata'' subsp. ''sesquipedalis ...
s.
It is also a rat plasma
quercetin metabolite. It shows an
antioxidant
Antioxidants are compounds that inhibit oxidation, a chemical reaction that can produce free radicals. This can lead to polymerization and other chain reactions. They are frequently added to industrial products, such as fuels and lubricant ...
effect in human plasma.
In vitro studies indicate that miquelianin is able to reach the
central nervous system from the
small intestine
The small intestine or small bowel is an organ in the gastrointestinal tract where most of the absorption of nutrients from food takes place. It lies between the stomach and large intestine, and receives bile and pancreatic juice through the p ...
.
See also
*
Phenolic content in wine
References
Flavonoid glucuronides
Glucuronide esters
Quercetin glycosides
{{aromatic-stub