Qhov sib txawv tseem ceeb ntawm astaxanthin thiab zeaxanthin yog tias astaxanthin yog xim liab uas tuaj yeem pom hauv cov tsiaj hauv hiav txwv thiab cov kab mob, qhov zeaxanthin yog xim daj pom hauv zaub thiab txiv hmab txiv ntoo.
Astaxanthin thiab zeaxanthin yog ob qho xim tseem ceeb uas tuaj yeem pom nyob hauv ib puag ncig. Lawv muaj cov tshuaj lom neeg thiab lub cev sib txawv.
Astaxanthin yog dab tsi?
Astaxanthin yog hom keto-carotenoid nrog ntau yam kev siv. Nws yog siv los ua cov khoom noj khoom haus thiab cov khoom noj xim. Cov tshuaj no belongs rau cov chav kawm loj ntawm cov tshuaj sib txuas uas muaj npe terpenes. Peb tuaj yeem faib cov tshuaj no hauv qab xanthophyll. Tab sis tam sim no, nws tau suav hais tias yog ib qho carotenoid compound uas muaj cov pa oxygen xws li hydroxyl lossis ketone pawg.
Cov tshuaj formula ntawm astaxanthin yog C40H52O4 Cov molar loj ntawm Cov tshuaj no yog 596.84 g / mol. Nws zoo nkaus li cov hmoov liab uas muaj qhov ntom ntom ntawm 1.07 g / cm 3 Nws cov ntsiab lus melting yog 216 degrees Celsius, thiab nws qhov kub kub yog li 774 degrees Celsius.
Naturally, astaxanthin tshwm sim raws li cov ntshav liab xim pigment tsim ib txwm muaj nyob rau hauv dej tshiab microalgae Haematococcus pluvialis thiab hauv qee cov poov xab. Thaum cov algae ntsib kev poob siab vim tsis muaj cov as-ham, nce salinity, los yog ntau lub hnub ci, hom yuav tsim astaxanthin. Yog li ntawd, cov tsiaj uas noj cov alga no nws thiaj li muaj kev cuam tshuam liab-txiv kab ntxwv astaxanthin pigmentation rau ntau qib. Cov tsiaj no muaj xws li flamingos, liab hiav txwv bream, crustaceans, salmon, thiab liab trout.
Astaxanthin qhia cov qauv isomeric configurations. Tsis tas li ntawd, nws tseem muaj ob lub chaw chiral ntawm 3- thiab 3'-txoj hauj lwm. Qhov no ua rau peb tus kheej stereoisomers. Peb hom isomeric no tuaj yeem pom nyob rau hauv qhov xwm txheej, tab sis kev faib cov txheeb ze sib txawv los ntawm ib lub cev mus rau lwm qhov. Ob daim ntawv tseem ceeb ntawm astaxanthin yog hu ua esterified daim ntawv thiab tsis-esterified daim ntawv. Daim ntawv tsis-esterified tuaj yeem pom hauv cov poov xab thiab cov khoom siv hluavtaws. Daim ntawv esterified tuaj yeem pom nyob rau hauv qhov chaw algal. Tsis tas li ntawd, cov ntaub ntawv no muaj qhov sib txawv ntawm cov roj fatty acid moieties uas muaj cov tshuaj uas cuam tshuam los ntawm cov kab mob hauv lub cev thiab kev loj hlob.
Zeaxanthin yog dab tsi?
Zeaxanthin yog ib qho carotenoid hauv cov xwm txheej uas muaj txiaj ntsig zoo hauv lub voj voog xanthophyll. Nws yog cov xim uas muab paprika nws cov xim. Cov tshuaj no yog tsim los ntawm qee cov nroj tsuag thiab hauv qee cov kab mob. E.g. pob kws, saffron, goji, thiab ntau lwm yam nroj tsuag thiab microbes.
Cov tshuaj formula ntawm zeaxanthin yog C40H56O2 Nws cov molar loj tuaj yeem 568.8 g / mol. Nws tshwm nyob rau hauv cov xim txiv kab ntxwv-liab, thiab lub melting point yog 215.5 degrees Celsius. Tsis tas li ntawd, nws yog insoluble hauv dej. Nws tshwm sim tsuas yog nyob rau hauv nplooj ntawm ntsuab nroj tsuag. Nyob ntawd, lawv pab hloov lub teeb lub zog thiab qee zaum ua tus neeg sawv cev tsis yog tshuaj tua kab mob uas cuam tshuam nrog triplet chlorophyll. Qhov no chlorophyll yog overproduced ntawm lub teeb siab thaum lub sij hawm photosynthesis.
Vim tias lutein thiab zeaxanthin muaj cov qauv tshuaj zoo tib yam, lawv yog isomers. Tab sis lawv tsis yog stereoisomers. Lutein txawv ntawm zeaxanthin raws li qhov chaw ntawm ob daim ntawv cog lus nyob rau hauv ib qho ntawm cov nplhaib kawg. Yog li, lutein muaj peb lub chaw chiral, tab sis zeaxanthin muaj ob. Txij li thaum symmetry yog tib yam, ob lub stereoisomers ntawm zeaxanthin zoo tib yam, yog li zeaxanthin tsuas muaj peb hom stereoisomeric. Lub stereoisomer hu ua meso-zeaxanthin.
Qhov txawv ntawm Astaxanthin thiab Zeaxanthin yog dab tsi?
Astaxanthin thiab zeaxanthin yog ob hom xim. Qhov sib txawv tseem ceeb ntawm astaxanthin thiab zeaxanthin yog tias astaxanthin yog xim liab uas tuaj yeem pom hauv cov tsiaj hiav txwv thiab cov kab mob, thaum zeaxanthin yog xim daj pom hauv zaub thiab txiv hmab txiv ntoo.
Cov hauv qab no qhia txog qhov sib txawv ntawm astaxanthin thiab zeaxanthin hauv daim ntawv tabular rau kev sib piv ntawm ib sab.
Summary – Astaxanthin vs Zeaxanthin
Astaxanthin yog hom keto-carotenoid uas yog siv los ua cov khoom noj khoom haus thiab cov khoom noj xim. Zeaxanthin yog ib hom carotenoid hauv cov xwm txheej uas muaj txiaj ntsig zoo hauv lub voj voog xanthophyll. Qhov sib txawv tseem ceeb ntawm astaxanthin thiab zeaxanthin yog tias astaxanthin yog xim liab uas tuaj yeem pom hauv cov tsiaj hiav txwv thiab cov kab mob, thaum zeaxanthin yog xim daj pom hauv zaub thiab txiv hmab txiv ntoo.
