Qhov sib txawv tseem ceeb ntawm malic acid thiab citric acid yog tias malic acid yog dicarboxylic acid uas tag nrho cov kab mob muaj sia tsim tau whereas citric acid yog tricarboxylic acid uas muaj nyob rau hauv citrus txiv hmab txiv ntoo.
Ob qho tib si malic acid thiab citric acid yog cov organic acid tebchaw. Peb categorize lawv li carboxylic acids vim lawv muaj carboxylic pawg (-COOH pawg). Ob qho acids no yog lub luag haujlwm rau qaub saj hauv qee cov txiv hmab txiv ntoo. Yog li ntawd, cov tebchaw no muaj txiaj ntsig zoo li cov khoom noj ntxiv thiab.
Malic Acid yog dab tsi?
Malic acid yog dicarboxylic acid uas muaj cov tshuaj formula C4H6O5Txhua yam muaj sia nyob tuaj yeem tsim qhov sib xyaw no. Tsis tas li ntawd, nws yog lub luag haujlwm rau lub qab ntxiag saj hauv qee cov txiv hmab txiv ntoo. Piv txwv li: txiv apples. Yog li ntawd, nws kuj tseem siv tau ua zaub mov ntxiv. Muaj ob daim ntawv stereoisomeric ntawm no compound; lawv yog L-enantiomer thiab D-enantiomer.
Daim duab 01: Cov Qauv Tshuaj ntawm Malic Acid
Txawm li cas los xij, tsuas yog L-enantiomer tshwm sim ib txwm muaj. Thaum peb tsim cov kua qaub no ua ke, peb tuaj yeem tau txais kev sib xyaw racemic ntawm ob daim ntawv. Lub npe IUPAC ntawm cov tshuaj no yog 2-Hydroxybutanedioic acid. Cov molar loj ntawm cov compound no yog 134.09 g / mol thaum lub melting point yog 130◦C.
Citric Acid yog dab tsi?
Citric acid yog tricarboxylic acid uas muaj cov tshuaj formula C6H8O7Cov tshuaj no muaj nyob rau hauv cov txiv hmab txiv ntoo citrus. Nws muaj peb pawg carboxylic acid (-COOH) nrog rau pawg hydroxyl (-OH). Cov molar loj ntawm cov tshuaj no yog 192 g / mol. Ntxiv mus, no odorless compound nkag crystallizes los ntawm nws cov tshuaj. Thiab cov muaju no tshwm sim ua cov hmoov dawb thiab nws yooj yim yaj hauv dej thiab tsis muaj dej ethanol.
Daim duab 02: Cov Qauv Tshuaj ntawm Citric Acid
Tsis tas li ntawd, cov pawg carboxylic ua rau cov khoom sib xyaw no muaj zog hydrogen bonds. Cov kua qaub no muaj txiaj ntsig zoo li khoom noj khoom haus thiab dej haus. Tsis tas li ntawd, nws kuj ua raws li tus neeg sawv cev chelate thiab cov khoom xyaw hauv qee cov tshuaj pleev ib ce.
Qhov txawv ntawm Malic Acid thiab Citric Acid yog dab tsi?
Malic acid yog dicarboxylic acid uas muaj cov tshuaj formula C4H6O5Tag nrho cov tsiaj muaj sia tsim cov kua qaub no. Cov molar loj ntawm nws yog 134.09 g / mol. Nws muaj ob pawg carboxylic, yog li, muaj ob qhov hloov tau hydrogen atoms. Citric acid yog tricarboxylic acid uas muaj cov tshuaj formula C6H8O7 Citrus txiv hmab txiv ntoo yog qhov ntau. qhov chaw ntawm nws. Tsis tas li ntawd, cov molar loj ntawm cov tshuaj no yog 192 g / mol. Nws muaj peb pawg carboxylic, yog li, muaj peb qhov hloov tau hydrogen atoms. Qhov no yog qhov txawv ntawm malic acid thiab citric acid.
Summary – Malic Acid vs Citric Acid
Malic acid thiab citric acid yog cov organic acid tebchaw. Qhov txawv ntawm malic acid thiab citric acid yog tias malic acid yog dicarboxylic acid uas tag nrho cov kab mob muaj sia tsim thaum lub citric acid yog tricarboxylic acid uas muaj nyob rau hauv citrus txiv hmab txiv ntoo.
