Lutein, tseem hu ua "phytoalexin", muaj nyob rau hauv xwm ua ke nrog zeaxanthin. Nws yog cov khoom tseem ceeb ntawm phytochromes hauv pobkws, zaub, txiv hmab txiv ntoo thiab paj, thiab muaj nyob rau hauv chloroplasts ntawm nplooj, qhov chaw uas nws kis tau lub teeb absorbed rau chlorophyll a. Nws yog presumed kom muaj kev tiv thaiv cov duab-oxidation thiab photodamage. Nws tseem yog cov xim tseem ceeb uas ua rau thaj tsam macular ntawm tib neeg retina.
Lutein yog ib yam khoom uas muaj nyob rau hauv ntau hom zaub, paj, txiv hmab txiv ntoo thiab lwm yam nroj tsuag thiab belongs rau "carotenoid" pawg ntawm cov tshuaj. Lub ntsiab carotenoids pom nyob rau hauv tib neeg muaj xws li d-carotene, P-carotene, cryptoxanthin, lutein, lycopene thiab orthoflavin. Cov kev sim tshuaj kho mob tau pom tias lutein yog ib qho zoo tshaj plaws antioxidant thiab ntxiv qee yam ntawm lutein rau cov zaub mov tuaj yeem tiv thaiv cellular aging thiab kab mob laus, nrog rau tiv thaiv tsis pom kev thiab qhov muag tsis pom tshwm sim los ntawm retinal macular degeneration hauv lub qhov muag laus. Lawv tau raug pom zoo tias yog cov tshuaj tiv thaiv kab mob qog noj ntshav, lub neej ntev, cov neeg tua kab mob, lub plawv nres thiab cov kab mob coronary. Lutein kuj tseem siv los ua zaub mov ntxiv rau xim nqaij qaib nqaij thiab qe, thiab tau siv los ua xim thiab khoom noj khoom haus hauv kev lag luam khoom noj.
Kev tiv thaiv qhov muag: Lutein yog ib qho tseem ceeb carotenoid derivative, ib tug natural pigment pom nyob rau hauv ntau txiv hmab txiv ntoo thiab zaub thiab ib tug tseem ceeb nutrient rau tib neeg lub cev. Lutein absorbs lub zog siab UV rays thiab tiv thaiv UV kev puas tsuaj, yog li pab tiv thaiv qhov muag pom kev noj qab haus huv, tshwj xeeb tshaj yog tawm tsam qhov muag kab mob xws li glaucoma thiab cataracts.
Antioxidant: Raws li lub ntuj antioxidant, lutein tuaj yeem tshem tawm cov dawb radicals thiab txo qhov kev puas tsuaj los ntawm oxidative kev nyuaj siab, yog li tiv thaiv kev tshwm sim ntawm ntau yam kab mob, xws li kab mob plawv thiab mob qog noj ntshav.
Txhim kho lub cev tiv thaiv kab mob: Lutein txhawb kev loj hlob thiab kev loj hlob ntawm lub cev tiv thaiv kab mob, ntxiv dag zog rau lub cev tiv thaiv kab mob thiab pab tiv thaiv kab mob thiab kab mob.
Lutein muaj kev tiv thaiv tseem ceeb ntawm macula hauv retina, thiab nws qhov tsis txaus yuav ua rau macular degeneration thiab qhov muag tsis pom kev. Lutein yog ib tug precursor ntawm NA, uas yog hloov mus rau VA nyob rau hauv lub cev. Lub luag haujlwm tseem ceeb ntawm lutein nyob rau hauv lub qhov muag yog raws li ib tug antioxidant thiab ib tug photoprotective neeg sawv cev. Cov paj hlwb optic tsis yog txuas ntxiv dua tshiab thiab muaj kev cuam tshuam rau kev puas tsuaj los ntawm kev puas tsuaj los ntawm cov dawb radicals, thiab cov nyhuv antioxidant ntawm lutein tuaj yeem cuam tshuam qhov tsim ntawm cov dawb radicals. Lutein absorbs ntau lub teeb xiav, lub wavelength ntawm xiav pom lub teeb nyob ze ntawm lub teeb ultraviolet, thiab yog hom teeb pom kev zoo tshaj plaws uas tuaj yeem ncav cuag retina. Ua ntej mus txog lub hlwb rhiab heev hauv retina, lub teeb hla dhau qhov siab tshaj plaws ntawm lutein, uas tuaj yeem txo qis yog tias macula nplua nuj nyob rau hauv lutein.
Lub zog oxidative nyhuv ntawm lutein inhibits cov kev ua ntawm reactive oxygen radicals, tiv thaiv lawv los ntawm kev puas hlwb li qub. Kev sim tau pom tias cov pa oxygen reactive tuaj yeem cuam tshuam nrog DNA, cov proteins thiab lipids, ua rau lawv lub cev tsis muaj zog thiab ua rau cov kab mob ntev xws li mob qog noj ntshav, atherosclerosis thiab hnub nyoog ntsig txog daj degeneration. Luteolin tuaj yeem ua tsis tau cov pa oxygen los ntawm lub cev lossis tshuaj tua kab mob, yog li tiv thaiv lub cev los ntawm kev puas tsuaj thiab txhim kho lub cev tiv thaiv kab mob.
Cataracts yog kab mob qhov muag loj uas ua rau qhov muag tsis pom kev thoob ntiaj teb. Cov kev tshawb fawb tsis ntev los no tau pom tias Lutein ntau ntxiv tau ua kom muaj txiaj ntsig zoo nkauj hauv cov xim nruab nrab thiab cov neeg laus, thiab lub siab dua lub ntsej muag zoo nkauj yog xav tias yog ib qho tshwj xeeb ntawm kev txhim kho cataract.
Cov kev tshawb pom tsis ntev los no qhia tias lutein muaj qhov cuam tshuam qeeb ntawm cov txheej txheem atherosclerotic thaum ntxov. Qhov kev txhawj xeeb tseem ceeb yog kev sib raug zoo ntawm kev hloov pauv hauv intima-media thickness ntawm cov hlab ntsha hauv lub cev thiab cov ntsiab lus lutein ntawm cov ntshav. Qib qis ntawm lutein nyob rau hauv cov ntshav yog heev yuav ua rau thickening ntawm phab ntsa hlab ntsha, thiab nrog ib tug maj mam nce nyob rau hauv cov qib ntawm lutein, lub siab nyiam rau thickening ntawm phab ntsa hlab ntsha txo, thiab atheroembolism yog ho txo. Tib lub sijhawm, lutein nyob rau hauv cov hlab ntsha phab ntsa kuj txo cov oxidative zog ntawm LDL cholesterol.
Ntau qhov kev tshawb fawb tau pom tias luteolin muaj kev cuam tshuam rau ntau yam qog noj ntshav, xws li mob qog noj ntshav mis, mob qog nqaij hlav prostate, mob qog noj ntshav, mob qog noj ntshav, thiab lwm yam.
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