lumichromen.
/ˈl(j)uːmɪkrəʊm/ Chemistry.
6,7-Dimethylalloxazine, C12H10N4O2,, a crystalline compound that is formed by ultra-violet irradiation of riboflavin in acidic solution and shows a sky-blue fluorescence.
ΚΠ
1935 Chem. Abstr. 29 798 Straw-yellow crystals of lumichrome..are obtained by irradiating solns. of lactoflavin with sunlight.
1949 Proc. Soc. Exper. Biol. & Med. 70 585/2 The presence of lumichrome crystals in the media containing riboflavin after growth of the tubercule bacillus indicated that the loss of the vitamin was due to conversion to lumichrome.
1962 S. Udenfriend Fluorescence Assay xiv. 460 Fresh milk and cream emit greenish-yellow fluorescence which is due mainly to riboflavin. When exposed to daylight for appreciable periods of time or irradiated in any other way, the fluorescence turns from yellow to blue. The latter is characteristic of lumichrome.
1972 Plant Physiol. XLIX. 991/2 The present report establishes the formation of lumichrome, presumably from either free or bound riboflavin, by the action of light on etiolated shoots of corn and oats and on yeast cells.
This entry has not yet been fully updated (first published 1976; most recently modified version published online June 2018).
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n.1935