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词汇 purpurin
释义

Definition of purpurin in English:

purpurin

noun ˈpəːpjʊrɪnˈpərpjərən
mass nounChemistry
  • A red dye originally extracted from madder and also prepared artificially by the oxidation of alizarin.

    〔化〕羟基茜草苏,红紫素,紫色素

    An anthraquinone derivative; chemical formula: C₁₄H₈O₅

    Example sentencesExamples
    • In general, these newer drugs have been based on the structure of chlorin, purpurin, phthalocyanine or naphthalocyanine.
    • However, the addition of purpurin to oxidized cytochrome c in the absence of microsomal fraction demonstrated low level but dose-dependent ‘reductase-like’ activity.
    • Additionally, monascus pigments, purpurin, chlorophyllin and curcumin were reported to inhibit the mutagenicity of heterocyclic amines and other carcinogens.
    • Alizarin is the main colourant molecule, but the extract also contains a closely related compound called purpurin, which (despite the name) imparts an orange colour.

Origin

Mid 19th century: from Latin purpura 'purple' + -in1.

Definition of purpurin in US English:

purpurin

nounˈpərpyərənˈpərpjərən
Chemistry
  • A red dye originally extracted from madder and also prepared artificially by the oxidation of alizarin.

    〔化〕羟基茜草苏,红紫素,紫色素

    An anthraquinone derivative; chemical formula: C₁₄H₈O₅

    Example sentencesExamples
    • Alizarin is the main colourant molecule, but the extract also contains a closely related compound called purpurin, which (despite the name) imparts an orange colour.
    • However, the addition of purpurin to oxidized cytochrome c in the absence of microsomal fraction demonstrated low level but dose-dependent ‘reductase-like’ activity.
    • Additionally, monascus pigments, purpurin, chlorophyllin and curcumin were reported to inhibit the mutagenicity of heterocyclic amines and other carcinogens.
    • In general, these newer drugs have been based on the structure of chlorin, purpurin, phthalocyanine or naphthalocyanine.

Origin

Mid 19th century: from Latin purpura ‘purple’ + -in.

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