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Zeaxantina

De Wikipedia, la enciclopedia libre

estructura de la zeaxantina.

La zeaxantina 4-[18-(4-hidroxi-2,6,6-trimetil -1-ciclohexenil)- 3,7,12,16-tetrametil-octadeca- 1,3,5,7,9,11,13,15,17-nonaenil]- 3,5,5-trimetil-ciclohex-3-en-1-ol Número CAS 144-68-3 es un pigmento liposoluble de color amarillo, del grupo de las xantófilas que aparece en las algas,[1]​ bacterias[2]​ y plantas superiores (Zea, Crocus) y en la yema del huevo.[3]​[4]​ Su función es la de proteger a la planta contra la radiación solar; esta misma propiedad resulta útil para proteger la retina humana de las radiaciones ultravioleta del sol.

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Transcription

Características

La Zeaxantina de por sí ya se encuentra en la mácula del ojo humano, al igual que la luteína,[5]​ con la finalidad de protegernos. La zeaxantina se encuentra principalmente en el centro de la mácula lútea, mientras que la Luteína se encuentra mayoritariamente en la periferia. Es necesario mantener ambas sustancias ya que filtran los rayos solares: una baja cantidad de zeaxantina puede ser causa de cataratas.

Enlace

Johnson et al. 2000. American Journal of Clinical Nutrition 71, 1555-1562

Notas y referencias

  1. ↑ https://web.archive.org/web/20080518013539/http://www.cyanotech.com/pdfs/spirulina/spbul50.pdf
  2. ↑ Paracoccus zeaxanthinifaciens sp. nov., a zeaxanthin-producing bacterium - Berry et al. 53 (1): 231 - International Journal of Systematic and Evolutionary Microbiology
  3. ↑ https://web.archive.org/web/20080706160856/http://www.nal.usda.gov/fnic/foodcomp/Data/car98/zea_tble.pdf
  4. ↑ Spice Pages: Saffron (Crocus sativus)
  5. ↑ Bone RA. 2007. Macular pigment response to a supplement containing meso-zeaxanthin, lutein and zeaxanthin. Nutrition and Metabolism 4,12
Esta página se editó por última vez el 23 dic 2022 a las 20:45.
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