Laricitrin is an O-methylated flavonol, a type of flavonoid. It is found in red grape (absent in white grape)[1] and in Vaccinium uliginosum (bog billberries).[2] It is one of the phenolic compounds present in wine.[3]

Metabolism

Laricitrin is formed from myricetin by the action of the enzyme myricetin O-methyltransferase.[4] It is further methylated by laricitrin 5'-O-methyltransferase into syringetin.

Glycosides

References

  1. ^ a b Mattivi, F; Guzzon, R; Vrhovsek, U; Stefanini, M; Velasco, R (October 2006). "Metabolite profiling of grape: Flavonols and anthocyanins". J. Agric. Food Chem. 54 (20): 7692–702. doi:10.1021/jf061538c. PMID 17002441.
  2. ^ Anja; Jaakola, Laura; Riihinen, Kaisu R.; Kainulainen, Pirjo S. (2010). "Anthocyanin and Flavonol Variation in Bog Bilberries (Vaccinium uliginosumL.) in Finland". Journal of Agricultural and Food Chemistry. 58 (1): 427–433. doi:10.1021/jf903033m. PMID 20000402.
  3. ^ Castillo-Munoz, Noelia; Gomez-Alonso, Sergio; Garcia-Romero, Esteban; Hermosin-Gutierrez, Isidro (2007). "Flavonol profiles of Vitis vinifera red grapes and their single-cultivar wines". Journal of Agricultural and Food Chemistry. 55 (3): 992–1002. doi:10.1021/jf062800k. PMID 17263504.
  4. ^ Syringetin biosynthesis pathway on metacyc.org
  5. ^ Tyukavkina, N. A.; Medvedeva, S. A.; Ivanova, S. Z. (1974). "New flavonol glycosides from the needles of Larix sibirica". Chemistry of Natural Compounds. 10 (2): 170–172. doi:10.1007/BF00563605.
  6. ^ Flavonoids isolated from Medicago littoralis Rhode (Fabaceae): their ecological and chemosystematic significance Archived 2011-07-22 at the Wayback Machine