digitonin

1. A steroid glycoside obtained from Digitalis purpurea that has no cardiac action; used as a reagent in the determination of plasma cholesterol and steroids having a 3-hydroxyl group in beta configuration. 2. A mixture of four different steroids found in the seeds of Digitalis purpurea; a strong hemolytic poison. They can act as nonionic detergents in the solubilization of membrane proteins. SYN: digitin.

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dig·i·to·nin .dij-ə-'tō-nən n a steroid saponin C56H92O29 occurring in the leaves and seeds of foxglove

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dig·i·to·nin (dij″ĭ-toґnin) a saponin obtained from Digitalis purpurea; it possesses no cardiotonic action and is used as a reagent to precipitate free cholesterol.

Medical dictionary. 2011.

Look at other dictionaries:

  • Digitonin — Other names digitin Identifiers …   Wikipedia

  • Digitonin — Strukturformel Allgemeines Name Digitonin Andere Namen Digiti …   Deutsch Wikipedia

  • Digitonin — Di|gi|to|nin [Kurzw. aus nlat. Digitalis = Fingerhut (Bot.) u. ↑ Saponin] ein giftiges, nicht herzwirksames Glykosid (↑ Saponin) aus einem Spirostan Derivat (Digitogenin) u. einem Pentasaccharid aus Xylose u. je zwei Molekülen Galaktose u.… …   Universal-Lexikon

  • digitonin — digitoninas statusas T sritis chemija apibrėžtis Steroidinis augalų glikozidas, saponinas. atitikmenys: angl. digitonin rus. дигитонин …   Chemijos terminų aiškinamasis žodynas

  • digitonin — noun Etymology: International Scientific Vocabulary digit (from New Latin Digitalis) + saponin Date: 1875 a steroid saponin C56H92O29 occurring in the leaves and seeds of the common foxglove …   New Collegiate Dictionary

  • digitonin — See saponin …   Dictionary of molecular biology

  • digitonin — noun A glycoside, obtained from Digitalis purpurea, that is used as a detergent and whose aglycone is digitogenin …   Wiktionary

  • digitonin — dig·i·to·nin …   English syllables

  • digitonin — ˈtōnə̇n noun ( s) Etymology: International Scientific Vocabulary digit (from New Latin Digitalis) + onin (as in saponin) : a crystalline steroid saponin C56H92O29 occurring in the leaves and seeds of purple foxglove …   Useful english dictionary

  • digitonin reaction — the formation of a precipitate on treating a sterol, such as cholesterol or ergosterol, with digitonin; employed to define cholesterol esters which do not precipitate in total serum cholesterol determinations …   Medical dictionary

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