| 释义 |
Definition of triterpene in English: triterpenenountrʌɪˈtəːpiːntrīˈtərpēn Chemistry Any of a group of terpenes found in plant gums and resins, having unsaturated molecules based on a unit with the formula C₃₀H₄₈. Example sentencesExamples - Cucurbitacins are oxygenated tetracyclic triterpenes that have been shown to have emetic, antineoplastic, and cytotoxic effects on herbivores, resulting in feeding and oviposition deterrence and reduced growth of consumers.
- The leaves of the plant contain alkaloids, glycosides, triterpenes, tannins, volatile bases and probably other substances.
- Many of its medicinal effects are attributed to the triterpene glycosides known as ginsenosides (saponins).
- Terpenoids are classified according to the number of isoprene units they contain: monoterpenes, sesquiterpenes, diterpenes, triterpenes, tetraterpenes and polyterpenes.
- Some of the triterpenes fractions have been thought to act as in vivo precursors to steroids.
Derivatives adjective & noun Chemistry White, red, and tree peony contain glycosides (most notably paeoniflorin), flavonoids, proanthocyanidins, tannins, terpenoids, triterpenoids, and complex polysaccharides that may all contribute to its medicinal effects. Example sentencesExamples - Relative portions of total aliphatics and cyclic triterpenoids in the wax of intact fruits and of enzymatically isolated cuticles.
- Indeed, triterpenoid saponins with an acyl side chain have been shown to increase membrane permeability of endothelial cells, whereas those lacking the side chain did not.
- The resins produced by these glands have been shown to consist of a mixture of phenolics and steroidal triterpenoids; they act as important deterrents against mammalian herbivores, especially hares.
- Structurally, avicins are part of a greater family of molecules called triterpenoid saponins.
Definition of triterpene in US English: triterpenenountrīˈtərpēn Chemistry Any of a group of terpenes found in plant gums and resins, having unsaturated molecules based on a unit with the formula C₃₀H₄₈. Example sentencesExamples - Many of its medicinal effects are attributed to the triterpene glycosides known as ginsenosides (saponins).
- Terpenoids are classified according to the number of isoprene units they contain: monoterpenes, sesquiterpenes, diterpenes, triterpenes, tetraterpenes and polyterpenes.
- The leaves of the plant contain alkaloids, glycosides, triterpenes, tannins, volatile bases and probably other substances.
- Cucurbitacins are oxygenated tetracyclic triterpenes that have been shown to have emetic, antineoplastic, and cytotoxic effects on herbivores, resulting in feeding and oviposition deterrence and reduced growth of consumers.
- Some of the triterpenes fractions have been thought to act as in vivo precursors to steroids.
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