Qhov txawv ntawm lactic acid thiab mandelic acid yog tias lactic acid tsis haum rau cov tawv nqaij rhiab, qhov mandelic acid yog qhov kev xaiv zoo tshaj plaws rau cov tawv nqaij rhiab.
Lactic acid thiab mandelic acid muaj ntau daim ntawv thov ua ib qho khoom hauv cov khoom tu tawv nqaij. Ob lub tebchaw no tuaj yeem siv rau ntau hom tawv nqaij, uas ua rau lawv sib txawv ntawm ib leeg.
YLactic Acid yog dab tsi?
Lactic acid yog cov organic compound uas muaj cov tshuaj formula CH3CH(OH)COOH. Nyob rau hauv nws cov khoom, cov compound no yog cov hmoov dawb, thiab nws yog miscible nrog dej. Thaum nws yaj hauv dej, lactic acid tsim cov xim tsis muaj dej. Peb tuaj yeem muab nws lub npe hu ua alpha-hydroxy acid vim nws muaj pawg hydroxyl nyob ib sab ntawm pawg carboxyl. Cov tshuaj no muaj txiaj ntsig zoo li cov khoom sib xyaw nruab nrab hauv qee cov organic synthesis industries. Nws tseem hu ua mis nyuj acid vim mis nyuj muaj nplua nuj nyob rau hauv lactic acid.
Cov lactic acid compound yog chiral compound. Nws muaj ob enantiomers hu ua L-lactic acid thiab D-lactic acid. Racemic lactic acid yog sib npaug sib npaug ntawm ob enantiomers. Qhov kev sib tw racemic no yog miscible nrog dej thiab ethanol.
Daim duab 01: Cov Qauv Tshuaj ntawm Lactic Acid
Peb tuaj yeem tsim cov lactic acid los ntawm kev fermentation ntawm mis nyuj vim mis nyuj muaj lactic acid. Feem ntau, cov khoom ntawm no fermentation yog racemic lactic acid. Tab sis qee hom kab mob tsuas yog tsim cov D-lactic acid. Txawm li cas los xij, fermentation los ntawm kev ua pa anaerobic hauv cov nqaij tsiaj ua rau L-lactic acid. Yog li ntawd, cov tshuaj no tas li tsim nyob rau hauv cov tsiaj los ntawm pyruvate thaum lub sij hawm qhov kev txiav txim ntawm enzyme lactate dehydrogenase. Qhov kev tsim khoom no tuaj yeem tshwm sim thaum lub sijhawm ua haujlwm metabolism thiab kev tawm dag zog.
Muaj cov tshuaj thiab tshuaj pleev ib ce ntawm lactic acid, uas suav nrog kev tsim cov dej-soluble lactates los ntawm insoluble active cov khoom xyaw, raws li ib tug muaj nyob rau hauv tshuaj pleev ib ce thiab tshuaj pleev ib ce rau kev kho cov acidity, thiab lwm yam. Ntxiv mus, nws muaj daim ntawv thov. hauv kev tsim cov khoom siv tu vim tias nws muaj txiaj ntsig zoo li tus neeg sawv cev descaling rau kev tshem tawm cov dej tawv tawv.
YMandelic Acid yog dab tsi?
Mandelic acid yog cov organic compound uas muaj cov tshuaj formula C6H5CH(OH)COOH. Nws yog ib qho aromatic alpha hydroxy acid. Qhov sib xyaw no tshwm sim raws li cov khoom siv dawb crystalline uas yog soluble hauv dej thiab polar organic solvents. Cov tshuaj no yog ib qho tseem ceeb ua ntej rau ntau yam tshuaj. Ntxiv mus, nws tshwm sim raws li ib tug racemic sib tov vim lub chirality ntawm lub compound. Peb hu qhov no racemic sib tov paramandelic acid.
Daim duab 02: Cov Qauv Tshuaj ntawm Mandelic Acid
Peb tuaj yeem tsim cov kua qaub no los ntawm acid-catalyzed hydrolysis ntawm mandelonitrile. Mandelonitrile yog cyanohydrin ntawm benzaldehyde. Peb tuaj yeem npaj mandelonitrile los ntawm reacting benzaldehyde nrog sodium bisulfite kom muab ib qho adduct tsim los ntawm mandelonitrile thiab sodium cyanide uas peb muaj peev xwm ces hydrolyze.
Thaum xav txog kev siv Mandelic acid, nws yog siv los ua cov tshuaj tua kab mob rau kev kho cov kab mob urinary, ua tshuaj tua kab mob hauv qhov ncauj, ua ib feem ntawm lub ntsej muag, rau kev tsim cov tshuaj xws li cyclandelate thiab homatropine, thiab lwm yam..
Qhov txawv ntawm Lactic Acid thiab Mandelic Acid yog dab tsi?
Lactic acid thiab mandelic acid yog cov organic tebchaw uas muaj cov kua qaub. Cov no yog cov khoom xyaw tseem ceeb hauv cov khoom siv tawv nqaij. Qhov sib txawv tseem ceeb ntawm lactic acid thiab mandelic acid yog tias lactic acid tsis haum rau cov tawv nqaij rhiab heev, whereas mandelic acid yog qhov kev xaiv zoo tshaj plaws rau cov tawv nqaij rhiab thaum cov tshuaj no siv rau hauv cov khoom siv tawv nqaij. Ntxiv mus, lactic acid muaj cov qauv aliphatic, whereas mandelic acid muaj cov qauv aromatic.
Cov ntawv qhia nram qab no qhia qhov sib txawv ntawm lactic acid thiab mandelic acid hauv daim ntawv tabular rau ib sab ntawm kev sib piv.
Summary – Lactic Acid vs Mandelic Acid
Lactic acid thiab mandelic acid muaj ntau daim ntawv thov ua ib qho khoom hauv cov khoom tu tawv nqaij. Qhov sib txawv tseem ceeb ntawm lactic acid thiab mandelic acid yog tias lactic acid tsis haum rau cov tawv nqaij rhiab thaum mandelic acid yog qhov kev xaiv zoo tshaj plaws rau cov tawv nqaij rhiab thaum cov tshuaj no siv rau hauv cov khoom siv tawv nqaij.
