YCarotene vs Carotenoid
Xwm muaj xim sib txawv. Cov xim no yog vim muaj cov molecules nrog cov kab ke sib txuas, uas tuaj yeem nqus pom ntau qhov wavelengths los ntawm lub hnub ci. Tsis tsuas yog rau kev zoo nkauj, tab sis cov molecules no tseem ceeb nyob rau hauv ntau txoj kev. Carotenoids yog ib chav kawm ntawm cov organic molecules uas feem ntau pom nyob rau hauv qhov.
Carotene
Carotene yog ib chav kawm ntawm hydrocarbons. Lawv muaj cov qauv ntawm C40Hx Carotenes yog unsaturated hydrocarbons nrog alternating ob daim ntawv cog lus nyob rau hauv ib tug loj hydrocarbon molecule. Rau ib lub molecule, muaj plaub caug carbon atoms, tab sis tus naj npawb ntawm hydrogen atoms txawv nyob ntawm seb qhov degree ntawm unsaturation. Qee cov carotene muaj hydrocarbon rings ntawm ib kawg lossis ob qho kawg. Carotene yog nyob rau hauv chav kawm ntawm cov organic molecules hu ua tetraterpenes vim hais tias cov no yog synthesized los ntawm plaub terpene units (carbon 10 units). Txij li thaum carotene yog hydrocarbons, lawv yog insoluble nyob rau hauv dej, tab sis soluble nyob rau hauv organic solvents thiab rog. Lo lus carotene yog muab los ntawm lo lus carrot vim tias cov no feem ntau pom cov molecules hauv zaub ntug hauv paus. Carotene tsuas yog pom nyob rau hauv cov nroj tsuag, tab sis tsis nyob rau hauv cov tsiaj. Cov molecule no yog cov xim photosynthetic, uas yog ib qho tseem ceeb hauv absorbing tshav ntuj rau photosynthesis. Nws yog xim txiv kab ntxwv. Tag nrho cov carotene muaj xim, uas pom ntawm qhov muag liab qab. Cov xim no yog tshwm sim los ntawm conjugated ob daim ntawv cog lus system. Yog li cov no yog cov pigments uas yog lub luag haujlwm rau cov xim hauv cov carrots thiab qee cov nroj tsuag txiv hmab txiv ntoo thiab zaub. Lwm yam tshaj li carrots, carotene muaj nyob rau hauv qos yaj ywm qab zib, mangoes, spinach, taub dag, thiab lwm yam. Muaj ob hom carotene li alpha carotene (α-carotene) thiab beta carotene (β-carotene). Ob qhov no txawv vim qhov chaw uas ob daim ntawv cog lus nyob rau hauv pawg cyclic ntawm ib kawg. β-carotene yog daim ntawv ntau tshaj plaws. Qhov no yog anti oxidant. Rau tib neeg, β-carotene tseem ceeb hauv kev tsim cov vitamin A. Hauv qab no yog cov qauv ntawm carotene.
YCarotenoid
Carotenoid yog ib chav kawm ntawm hydrocarbons, thiab qhov no kuj suav nrog cov derivatives ntawm cov hydrocarbons uas muaj oxygen. Yog li carotenoids tuaj yeem muab faib ua ob chav kawm ua hydrocarbons thiab oxygenated compounds. Hydrocarbons yog carotene, uas peb tau tham saum toj no, thiab chav kawm oxygenated suav nrog xanthophylls. Tag nrho cov no yog cov xim xim muaj xim txiv kab ntxwv, daj thiab xim liab. Cov pigments no muaj nyob rau hauv cov nroj tsuag, tsiaj txhu thiab microorganisms. Lawv kuj yog lub luag haujlwm rau cov xim lom neeg ntawm cov tsiaj thiab cov nroj tsuag. Carotenoid pigments tseem ceeb heev rau photosynthesis ib yam nkaus. Lawv nyob rau hauv lub teeb sau complexes, los pab lub ris kom tau lub hnub ci zog rau lub photosynthesis. Carotenoids zoo li lycopene tseem ceeb rau kev tiv thaiv qog noj ntshav thiab kab mob plawv. Tsis tas li ntawd, cov no yog cov precursors rau ntau lub tebchaw, uas muab tshuaj tsw qab thiab tsw. Carotenoid pigments yog synthesized los ntawm cov nroj tsuag, kab mob, fungi, thiab qis algae, whereas qee cov tsiaj tau txais cov no los ntawm kev noj haus. Tag nrho cov carotenoid pigments muaj ob rau carbon rings ntawm qhov kawg, uas txuas nrog cov saw hlau ntawm carbon thiab hydrogen atoms. Cov no yog cov tsis polar. Raws li tau hais los saum toj no carotene tsis yog polar piv rau xanthophylls. Xanthophylls muaj oxygen atoms, uas ua rau lawv muaj polarity.
YQhov txawv ntawm Carotene thiab Carotenoid yog dab tsi?
• Carotene yog ib chav kawm ntawm hydrocarbons uas belongs rau tsev neeg carotenoid.
• Carotene yog hydrocarbons, whereas muaj qee cov carotenoids uas muaj oxygen.
• Carotene tsis yog polar piv rau qee cov carotenoids zoo li xanthophylls.
