Ascorbic Acid vs Sodium Ascorbate
Nws yog daim ntawv uas txhua tus muaj nyob uas txiav txim siab qhov txawv ntawm ascorbic acid thiab sodium ascorbate. Ob qho ascorbic acid thiab sodium ascorbateare yog cov ntaub ntawv ntawm Vitamin C thiab yog cov khoom noj khoom haus ntxiv, qhov tshwj xeeb tshaj yog sodium ascorbate poob rau hauv qeb ntawm cov ntsev ntxhia. Yog li, thaum ascorbic acid yog daim ntawv ntshiab ntawm Vitamin C, sodium ascorbate yog sodium ntsev ntawm ascorbic acid.
YAscorbic Acid yog dab tsi?
Raws li lub npe qhia, ascorbic acid yog acidic nyob rau hauv cov xwm thiab dissolves zoo nyob rau hauv dej los muab me ntsis acidic daws. Nws yog ib qho organic tshuaj compound nrog polyhydroxy muaj nuj nqi uas muab nws antioxidant zog. Yog li, ascorbic acid yog siv los ua cov khoom noj khoom haus antioxidant ntau.
Ntau tus tsiaj thiab nroj tsuag tuaj yeem tsim cov ascorbic acid los ntawm qabzib. Txawm li cas los xij, tib neeg thiab qee qhov primates siab dua tsis tuaj yeem ua tau vim tsis muaj ib qho tseem ceeb enzyme nyob rau hauv txoj kev ascorbic acid biosynthesis. Yog li ntawd, tib neeg raug yuam kom tau txais nws los ntawm kev noj zaub mov kom tsis txhob muaj vitamin C tsis txaus. Qhov tsis txaus ntawm vitamin C tuaj yeem ua rau ntau yam mob xws li 'scurvy,' uas tuaj yeem ua rau tuag taus. Ascorbic acid yav dhau los hu ua 'L-hexuronic acid' thiab daim ntawv tseem ceeb uas tshwm sim hauv qhov yog 'L' isomer. Txawm li cas los xij, muaj D-ascorbic acid uas zoo ib yam li L-ascorbic acid hauv kev ua haujlwm antioxidant tab sis tsawg dua hauv cov vitamin C. Tsis tas li ntawd, kev ua haujlwm antioxidant ntawm ascorbic acid tsuas yog muaj lub luag haujlwm me me hauv tag nrho cov vitamin kev ua haujlwm. Tab sis, rau cov tshuaj tiv thaiv tshwj xeeb hauv lub cev, nws yog ib qho tseem ceeb uas qhov tseeb isomer tam sim no.
Tshuaj Structure ntawm Ascorbic Acid
Sodium Ascorbate yog dab tsi?
Sodium ascorbate yog sodium ntsev ntawm ascorbic acid thiab yog ib qho ntxhia ntsev siv los ua cov khoom noj antioxidant. Nws yog tsim los ntawm cov tshuaj tiv thaiv ntawm qhov sib npaug ntawm ascorbic acid thiab sodium bicarbonate nrog dej nag ntxiv siv isopropanol.
Y Ua cov ntxhia ascorbate, nws yog buffered thiab, yog li ntawd, tsawg acidic dua ascorbic acid. Feem ntau, sodium ascorbate raug pom zoo rau cov neeg uas muaj teeb meem hauv plab hnyuv txuam nrog ascorbic acid. Sodium ascorbate yog suav tias yog me me thiab ntau lub plab tus phooj ywg. Txawm li cas los xij, thaum suav nrog sodium ascorbate hauv kev noj haus, nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias sodium tseem tau txais txiaj ntsig zoo los ntawm lub cev nrog rau ascorbic acid. Yog li ntawd, kev noj tshuaj ntau npaum li cas yuav tsum tau ua tib zoo saib xyuas. Sodium ascorbate yog dej soluble thiab yog li tsuas yog tuaj yeem tiv thaiv cov ntaub ntawv dej soluble los ntawm oxidation. Nws tsis tuaj yeem tiv thaiv cov rog los ntawm oxidation. Rog soluble esters ntawm ascorbic acid nrog ntev fatty chains yuav tsum tau rau lub hom phiaj no.
Cov qauv tshuaj ntawm (+)-sodium L-ascorbate
Dab tsi yog qhov txawv ntawm Ascorbic Acid thiab Sodium Ascorbate?
• Ascorbic acid yog cov organic acid whereas sodium ascorbate yog cov ntxhia ntsev ntawm ascorbic acid.
• European Food Additive E tooj rau ascorbic acid yog E300 thiab rau sodium ascorbate nws yog E301.
• Sodium ascorbate yog me dua li ascorbic acid vim nws tau buffered thiab muaj acidity tsawg. Qhov ntawd ua rau sodium ascorbate ntau lub plab zoo dua li ascorbic acid.
• Sodium ascorbate muaj ester muaj nuj nqi whereas ascorbic acid tsis muaj ester muaj nuj nqi hauv nws.
