Zeaxanthinyog ib tug carotenoid nrog ib pawg hydroxyl, uas feem ntau coexists nrog lutein, -carotene, cryptoxanthin, thiab lwm yam los tsim ib tug carotenoid sib tov. Zeaxanthin yog txiv kab ntxwv-liab crystalline hmoov nrog me me los yog tsis muaj tsw.
Dab tsi yog Qhov Zoo Tshaj Plaws ntawm Zeaxanthin?
Tib neeg lub cev tsis tuaj yeem tsim cov zeaxanthin ntawm nws tus kheej thiab yuav tsum tau txais los ntawm cov khoom noj lossis tshuaj ntxiv. Zeaxanthin, cov xim tseem ceeb hauv cov pob kws daj, tau txais nws lub npe los ntawm nws lub npe tshawb fawb Latin. Cov ntsiab lus ntawm zeaxanthin nyob rau hauv pob kws kernels yog hais txog 0 1-9mg/kg. Nyob rau hauv qhov xwm txheej, cov nplooj ntsuab ntsuab yog cov khoom noj tseem ceeb ntawm lutein, tab sis cov ntsiab lus ntawm zeaxanthin yog me me.
Cov khoom noj ntawm zeaxanthin feem ntau suav nrog cov pob kws daj, txiv kab ntxwv kua txob, kua txiv kab ntxwv, zib ntab melon, txiv nkhaus taw, raspberry, blueberry, txiv duaj, wolfberry, qe qe, thiab lwm yam. Lub horny endosperm ntawm pob kws muaj ntau cov lutein, nrog rau tag nrho cov ntsiab lus ntawm txog 11-30 mg/kg.
Zeaxanthin Cov txiaj ntsig
1. Lutein thiab zeaxanthin yog tib cov carotenoids pom nyob rau hauv lub qhov muag, nyob rau hauv lub macular cheeb tsam ntawm lub qhov muag lub luag hauj lwm rau lub hauv paus tsis pom kev. Yog tias qhov kev ua haujlwm ntawm thaj chaw macular tsis zoo li qub, lub luag haujlwm tseem ceeb ntawm tus neeg yuav maj mam degenerate thiab txawm tias qhov muag tsis pom.
2. Ntawm qhov chaw nruab nrab ntawm thaj chaw macular, qhov teeb meem tshwm sim yog qhov muaj zog tshaj plaws thiab cov pa oxygen reactive yog tsim ntau tshaj plaws. Lub peev xwm ntawm carotenoids kom tshem tawm cov pa oxygen reactive feem ntau yog nyob ntawm tus naj npawb ntawm conjugated ob daim ntawv cog lus lawv muaj, thaum zeaxanthin muaj 11 conjugated ob daim ntawv cog lus, uas yog ib qho zoo dua singlet oxygen scavenger thiab muaj peev xwm ntau dua antioxidant.
3. Ultraviolet lub teeb feem ntau yog lim los ntawm lub cornea thiab lens, tab sis lub teeb xiav tuaj yeem nkag mus rau lub qhov muag mus rau retina thiab macula. Cov xim macular lutein thiab zeaxanthin nyob rau hauv lub lens thiab macular cheeb tsam tuaj yeem lim tawm lub teeb xiav thiab tiv thaiv lub teeb xiav los ntawm kev ua phem rau lub qhov muag.
4. Ntau qhov kev tshawb fawb txog kab mob kis tau kuj tau pom tias zeaxanthin muaj cov txiaj ntsig tshwj xeeb ntawm kev nqus cov teeb xiav feem ntau rau lub retina, yog li tiv thaiv lub khob hlwb hauv fovea ntawm retina. Nws yog cov lim dej xiav lub teeb zoo heev, uas tuaj yeem txo cov oxidative puas tsuaj rau lub retina thiab tiv thaiv ob lub qhov muag.