Prunin is a
flavanone
The flavanones, a type of flavonoids, are various aromatic, colorless ketones derived from flavone that often occur in plants as glycosides.
List of flavanones
* Blumeatin
* Butin
* Eriodictyol
* Hesperetin
* Hesperidin
* Homoeriodictyol
* Iso ...
glycoside
In chemistry, a glycoside is a molecule in which a sugar is bound to another functional group via a glycosidic bond. Glycosides play numerous important roles in living organisms. Many plants store chemicals in the form of inactive glycosides. ...
found in immature
citrus
''Citrus'' is a genus of flowering plant, flowering trees and shrubs in the rue family, Rutaceae. Plants in the genus produce citrus fruits, including important crops such as Orange (fruit), oranges, Lemon, lemons, grapefruits, pomelos, and lim ...
fruits
and in tomatoes.
[Improved characterization of tomato polyphenols using liquid chromatography/electrospray ionization linear ion trap quadrupole Orbitrap mass spectrometry and liquid hromatography/electrospray ionization tandem mass spectrometry. Anna Vallverdu´-Queralt, Olga Jauregui, Alexander Medina-Remon, Cristina Andres-Lacueva and Rosa M. Lamuela-Raventos, Rapid Commun. Mass Spectrom., 2010, volume 24, pages 2986–2992, ] Its
aglycone An aglycone (aglycon or genin) is the compound remaining after the glycosyl group on a glycoside is replaced by a hydrogen atom. For example, the aglycone of a cardiac glycoside would be a steroid molecule.
Detection
A way to identify aglycone ...
form is called
naringenin
Naringenin is a flavorless, colorless flavanone, a type of flavonoid. It is the predominant flavanone in grapefruit, and is found in a variety of fruits and herbs.
Structure
Naringenin has the skeleton structure of a flavanone with three hyd ...
.
Metabolism
Alpha-L-rhamnosidase
Alpha-L-rhamnosidase (, ''alpha-L-rhamnosidase T'', ''alpha-L-rhamnosidase N'') is an enzyme with systematic name ''alpha-L-rhamnoside rhamnohydrolase''. This enzyme catalyses the following chemical reaction
: Hydrolysis
Hydrolysis (; ) is a ...
breaks
naringin
Naringin is a flavanone-7-''O''-glycoside between the flavanone naringenin and the disaccharide neohesperidose.
The flavonoid naringin occurs naturally in citrus fruits, especially in grapefruit, where naringin is responsible for the fruit's bit ...
into prunin and rhamnose.
Glucosidase
Glucosidases are the glycoside hydrolase enzymes categorized under the EC number 3.2.1.
Function
Alpha-glucosidases are enzymes involved in breaking down complex carbohydrates such as starch and glycogen into their monomers.
They catalyze t ...
breaks prunin into glucose and
naringenin
Naringenin is a flavorless, colorless flavanone, a type of flavonoid. It is the predominant flavanone in grapefruit, and is found in a variety of fruits and herbs.
Structure
Naringenin has the skeleton structure of a flavanone with three hyd ...
.
References
Bibliography
*
External links
*
Flavanone glycosides
Flavonoid glucosides
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