Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun An orange crystalline compound, C15H10O5, that is obtained from rhubarb and other plants and has cathartic, anti-inflammatory, and anticancer properties.

from The Century Dictionary.

  • noun In chem., a glucoside (C15H10O5), crystallizing in orange-yellow prisms, found in the bark of buckthorn and in the root of rhubarb.

from the GNU version of the Collaborative International Dictionary of English.

  • noun (Chem.) An orange-red crystalline substance, C15H10O5, obtained from the buckthorn, rhubarb, etc., and regarded as a derivative of anthraquinone; -- so called from a species of rhubarb (Rheum emodei).

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun organic chemistry A purgative resin, 6-methyl-1,3,8-trihydroxyanthraquinone, obtained from some rhubarbs and other plants.

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[New Latin (Rheum) ēmōdī, a species of rhubarb : genitive of ēmōdus (from Greek Ēmōdos, the Himalayas) + –in.]

from Wiktionary, Creative Commons Attribution/Share-Alike License

Rheum emodi, a Himalayan rhubarb, and -in.

Examples

  • The product, known as emodin, inhibits an enzyme called 11-Beta-HSD1, which plays a role in resistance to insulin, the hormone that helps clear excess sugar from the blood.

    Channel NewsAsia Front Page News

  • The product, known as emodin, inhibits an enzyme called 11-Beta-HSD1, which plays a role in resistance to insulin, the hormone that helps clear excess sugar from the blood.

    canada.com Top Stories

  • Evolutionary ecology of secondary compounds in ripe fruit: Case studies with capsaicin and emodin.

    Frugivore

  • Figure 4B: Influence and radioactivity incorporation of acetate and malonate in aloe-emodin in static cultures of Cassia senna

    Chapter 7

  • Five compounds - chrysophanol, emodin, physcion, aloe-emodin and rhein - were isolated and identified spectroscopically (UV, IR and MS) and by comparison of the melting points with those reported for chrysophanol, emodin, physcion, aloe-emodin and rhein.

    Chapter 7

  • Using the reverse phase system, this elution sequence is broadly in accordance with their polarities: aloe-emodin polar, and physcion, least polar is eluted last.

    Chapter 7

  • Thus those of the emodin type (with substituents in both terminal rings A and C) are usually derived through the acetatemalonate (polyketide) pathway in both higher and lower plants, while the alizarin (without substituents in ring A) type of anthraquinones are derived through the shikimic acid pathway.

    Chapter 7

  • Figure 3B: Influence and radioactivity incorporation of acetate and malonate in emodin in static cultures of Cassia senna

    Chapter 7

  • Five compounds were identified and assayed, namely aloe-emodin, chrysophanol, emodin, physcion and rhein.

    Chapter 7

  • Anthraquinones were consistently eluted in the sequence, aloe-emodin, rhein, emodin, chrysophanol and physcion.

    Chapter 7

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