7,8-Dimethylalloxazine; riboflavin minus its ribityl side chain; produced by ultraviolet irradiation of riboflavin in acid solution.
Farlex Partner Medical Dictionary © Farlex 2012
References in periodicals archive ?
A similar photochemical method for the assay of riboflavin (RF) on the basis of the formation of its photoproduct, lumichrome (LC) and LC: RF ratio, has been reported [65].
Anwar et al., "Stability-indicating photochemical method for the assay of riboflavin: lumichrome method," Journal of Chemistry, vol.
Soil algae produce vitamin signals (lumichrome and riboflavin) that act as agonists within bacterial communities through quorum sensing [167].
(2008) demonstrated that lumichrome, a derivative of the vitamin riboflavin that is produced by the unicellular alga Chlamydomonas reinhardtii (as well as other prokaryotes and eukaryotes) can interact with the bacterial receptor for QS signals and elicit QS responses.
The vitamin riboflavin and its derivative lumichrome activate the LasR bacterial quorum-sensing receptor.
Signals of microbial origin can influence shoot processes, including AHLs that can stimulate transpiration (Joseph and Phillips 2003) and lumichrome and other rhizobia molecules that stimulate leaf expansion (Matiru and Dakora 2005).
Lumichrome, a principal photoproduct of riboflavin, was shown to photosensitize BaP under natural sunlight after photolysis of riboflavin.
Delta-tocopherols from Sargassum tortile induced settlement of the hydroid Coryne uchidai (Kato et al., 1975), jacarone isolated from the red alga Delesseria sanguinea induced settlement of the scallop Pecten maximus (Yvin et al., 1985), narains and anthosamines A and B isolated from marine sponges induced settlement of ascidian larvae (Tsukamoto et al., 1994, 1995), and lumichrome isolated from conspecifics induced settlement of larvae of the ascidian Halocynthia roretzi (Tsukamoto et al., 1999).
Lumichrome. A larval metamorphosis-inducing substance in the ascidian Halocynthia roretzi.