Ascorbic Acid vs L-ascorbic Acid
Ascorbic acid yog cov organic compound, uas tuaj yeem ua raws li cov kua qaub. Organic acids tseem ceeb muaj hydrogen thiab carbon nrog rau lwm yam. Lwm hom organic acids feem ntau yog acetic acid, lactic acid, formic acid, citric acid, thiab lwm yam. Cov kua qaub no muaj ib pawg -COOH. Yog li ntawd, lawv tuaj yeem ua raws li cov neeg pub dawb proton. Ascorbic acid muaj nyob rau hauv citrus txiv hmab txiv ntoo. Piv txwv li, txiv qaub, txiv qaub, txiv kab ntxwv tuaj yeem suav hais tias yog txiv kab ntxwv citrus.
Ascorbic Acid
Ascorbic acid kuj yog cov organic acid uas tshwm sim. Nws muaj nyob rau hauv tib neeg, nroj tsuag thiab microorganisms. Nws muaj cov qauv molecular ntawm C6H8O6 Qhov no yog xim dawb, tab sis qee zaum tej zaum yuav tshwm nyob rau hauv ib tug me ntsis daj xim ib yam nkaus thiab. Cov xim daj sawv cev rau qib qis purity ntawm ascorbic acid. Ascorbic acid muaj cov qauv hauv qab no nrog cov acidic pawg.
Ascorbic acid yog soluble hauv dej thiab lwm yam polar organic solvents. Thaum yaj hauv dej, nws tsim cov kua qaub me me. Thaum xoob proton los ntawm ib pawg hydroxyl yog sib koom ua ke rau vinyl carbon, cov molecule yog stabilized los ntawm resonance stabilization. Qhov kev ruaj ntseg ntawm deprotonated conjugate puag ntawm ascorbic acid ua rau nws acidic ntau dua li lwm pawg hydroxyl. Ascorbic acid yog ib qho antioxidant zoo li citric acid. Yog li ntawd, nws reacts nrog cov oxidants ntawm cov reactive oxygen hom, kom yields phem hom. Piv txwv li, thaum ascorbic acid reacts nrog hydrogen peroxide, nws tsim hydroxyl radicals, uas tuaj yeem ua rau cov molecules tseem ceeb hauv cov hlwb. Ascorbic acid yog ib qho kev txo qis. Thaum raug huab cua, nws txo cov pa oxygen rau dej. Thaum lub teeb thiab hlau ions tshwm sim, cov kev txo qis no nrawm dua. Nyob rau hauv lub synthesis ntawm ascorbic acid, qabzib ua tus reactant. Feem ntau ntawm cov tsiaj tuaj yeem tsim cov ascorbic acids hauv lawv lub cev. Glucose rau ascorbic acid hloov dua siab tshiab yuav tshwm sim hauv daim siab thiab rau qhov ntawd, enzyme L-gulonolactone oxidase yuav tsum tau. Tab sis qee cov tsiaj xws li puav, primates, guinea npua thiab noog tsis tuaj yeem tsim cov ascorbic acid vim tsis muaj cov enzyme no. Rau tib neeg kuj yog li no. Yog li lawv yuav tsum ua kom tiav cov ascorbic acid yuav tsum tau los ntawm lawv cov khoom noj.
YL-ascorbic Acid
L-ascorbic acid tseem hu ua vitamin C, thiab qhov no yog ib qho tseem ceeb rau tib neeg. Qhov no yog daim ntawv ntawm ascorbic acid, uas tsiaj thiab tib neeg yuav tsum tau coj mus rau hauv lub cev, yog tias lawv tsis tuaj yeem tsim cov ascorbic acid. Qhov no yog l-enantiomer ntawm ascorbic acid thiab d-enantiomer tsis muaj lub luag haujlwm tseem ceeb hauv cov kab mob lom. Raws li tau hais los saum no, qhov no yog qhov sib xyaw ua ke uas ua rau txo tus neeg sawv cev thiab antioxidant hauv cov kab mob lom. Lawv yog ib qho tseem ceeb rau cov synthesis ntawm collagen, carnitine, neurotransmitters, tyrosine, thiab lwm yam. Tsis tas li ntawd, nws yog tsim nyog los ua ib cofactor rau ib co ntawm cov txheej txheem synthesis. Tsis muaj vitamin C ua rau tus kab mob hu ua scurvy. Cov tsos mob ntawm tus kab mob no yog xim av ntawm daim tawv nqaij, spongy pos hniav thiab los ntshav los ntawm mucous daim nyias nyias.
Dab tsi yog qhov txawv ntawm Ascorbic Acid thiab L-ascorbic Acid?
• L -ascorbic acid yog l-enantiomers ntawm ascorbic acid.
• L -ascorbic acid yog cov khoom sib xyaw uas muaj nyob hauv cov kab mob lom ntau dua li d-ascorbic acid.
• Qee cov kab mob tuaj yeem tsim cov l-ascorbic acid hauv lawv lub cev.
