Prunin Explained

Prunin is a flavanone glycoside found in immature citrus fruits^{[1] [2]} and in tomatoes.^[3] Its aglycone form is called naringenin.

Metabolism

Glucosidase breaks prunin into glucose and naringenin.

References

1. Berhow. Mark A.. Vandercook. Carl E.. Biosynthesis of naringin and prunin in detached grapefruit. Phytochemistry. 28. 6. 1989. 1627–1630. 0031-9422. 10.1016/S0031-9422(00)97813-0.
2. Castillo. Julian.. Benavente. Obdulio.. del Rio. Jose A.. Hesperetin 7-O-glucoside and prunin in Citrus species (C. aurantium and C. paradisi). A study of their quantitative distribution in immature fruits and as immediate precursors of neohesperidin and naringin in Citrus aurantium. Journal of Agricultural and Food Chemistry. 41. 11. 1993. 1920–1924. 0021-8561. 10.1021/jf00035a021.
3. 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,

Bibliography

• Habelt. Konrad. Pittner. Fritz. A rapid method for the determination of naringin, prunin, and naringenin applied to the assay of naringinase . Analytical Biochemistry. 134. 2. 1983. 393–397. 0003-2697. 10.1016/0003-2697(83)90314-7. 6418025. free.