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ionone การใช้

ประโยคมือถือ
  • Carnivores in general are poor converters of dietary ionone-containing carotenoids.
  • These include beta carotene, beta ionone and gossypol.
  • Irones typically have a sweet floral, iris, woody, ionone, odor.
  • The carotenoid beta-cryptoxanthin possesses an ionone group and has vitamin activity in humans.
  • The two main aroma compounds of the oil of this species are ?-ionone and dodecyl acetate.
  • Animal species differ greatly in their ability to convert retinyl ( beta-ionone ) containing carotenoids to retinals.
  • Ionone can be heterogeneous catalyst and serves as an example of an aldol condensation followed by a rearrangement reaction.
  • There are three known routes to retinol that are used industrially, all of which start with ?-ionone.
  • ?-carotene, due to their single retinyl group ( ?-ionone ring ), also have some vitamin A activity ( though less than ?-carotene ), as does the xanthophyll carotenoid ?-cryptoxanthin.
  • Carotenoids with a cyclized, beta-ionone ring can be converted to vitamin A, also known as retinol, by the enzyme Beta-carotene 15, 15'- dioxygenase; however, the bioconversion of gamma-carotene to retinol has not been well-characterized.
  • Carotenoids that contain unsubstituted beta-ionone rings ( including beta-carotene, alpha-carotene, beta-cryptoxanthin and gamma-carotene ) have vitamin A activity ( meaning that they can be converted to retinol ), and these and other carotenoids can also act as antioxidants.
  • In general, carnivores are poor converters of ionone-containing carotenoids, and pure carnivores such as cats and ferrets lack beta-carotene 15, 15'- monooxygenase and cannot convert any carotenoids to retinal ( resulting in none of the carotenoids being forms of vitamin A for these species ).
  • One quirk of some " Viola " is the elusive scent of their flowers; along with terpenes, a major component of the scent is a ketone compound called ionone, which temporarily desensitises the receptors of the nose, thus preventing any further scent being detected from the flower until the nerves recover.