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MONOTERPENE [1 record]
Record 1 - internal organization data 2008-07-08
Record 1, English
Record 1, Subject field(s)
- Chemical Elements and Compounds
Record 1, Main entry term, English
- monoterpene
1, record 1, English, monoterpene
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 CONT
The monoterpenes are isolated from their natural sources by distillation of the plant matter with steam. They are volatile oils, less dense than water ... Purification is usually achieved by fractional distillation at reduced pressures or by regeneration from a crystalline derivative. 2, record 1, English, - monoterpene
Record 1, French
Record 1, Domaine(s)
- Éléments et composés chimiques
Record 1, Main entry term, French
- monoterpène
1, record 1, French, monoterp%C3%A8ne
correct, masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 CONT
Constituants les plus simples de la série des terpènes (à l'exception des hémiterpènes, rares) les monoterpènes sont issus du couplage de deux unités «isopréniques». On en connaît plus de mille : de structure «régulière», ce sont les éléments habituels des huiles essentielles; de structure «irrégulière», ils participent à la formation des pyréthrines et à la composition de certaines huiles essentielles d'Asteraceae; cyclisés en méthylcyclopentanes ils constituent les iridoïdes. 2, record 1, French, - monoterp%C3%A8ne
Record number: 1, Textual support number: 1 OBS
Exceptionnels dans le règne animal (sauf chez quelques insectes), rares chez les champignons, ils existent à l'état halogéné chez les algues et sont largement distribués chez les végétaux supérieurs, surtout dans certains ordres ou familles : huiles essentielles des Lamiales, Astérales, Laurales, etc., iridoïdes des Gentianales, Scrophulariales, Cornales, etc. 2, record 1, French, - monoterp%C3%A8ne
Record 1, Spanish
Record 1, Textual support, Spanish
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