Qhov txawv ntawm MSG thiab ntsev yog tias MSG (monosodium glutamate) yog sodium ntsev ntawm glutamic acid whereas ntsev yog feem ntau sodium chloride.
Ob leeg MSG thiab ntsev muaj sodium. Lo lus MSG stands rau monosodium glutamate. Nws yog ib qho khoom noj khoom haus additive uas peb siv los txhim kho qhov tsw ntawm cov zaub mov tiav. Ob qho ntsev thiab MSG yog cov tshuaj tsw qab. Ntxiv mus, lawv tuaj yeem txhim kho kev ntxhib los mos thiab txee lub neej ntawm cov khoom noj. Tib neeg feem ntau tsis meej pem nrog ob lub tebchaw vim tias lawv zoo sib xws.
MSG yog dab tsi?
MSG yog monosodium glutamate. Nws yog sodium ntsev ntawm glutamic acid. Glutamic acid yog ib qho ntawm cov amino acid ntau tshaj plaws, uas poob rau hauv qeb ntawm cov amino acids tsis tseem ceeb hauv cov xwm txheej. Lawm, nws tshwm sim hauv txiv lws suav, txiv hmab txiv ntoo, cheese, thiab lwm yam. Cov tshuaj formula ntawm no compound yog C5H8NO4. Na. Molar mass yog 169.11 g / mol. Nws zoo nkaus li dawb, crystalline hmoov, zoo ib yam li cov tsos ntawm lub rooj ntsev. Lub melting point ntawm no compound yog 232 ° C.
Daim duab 01: Qhov tshwm sim ntawm MSG
Ntxiv mus, cov ntsiab lus sodium ntawm qhov sib xyaw no qis dua li ntsev; Hauv MSG, cov ntsiab lus sodium yog 12%, thiab hauv sodium chloride, nws yog 39%. Qhov no feem ntau yog vim qhov loj dua ntawm glutamate counter ion. Ntxiv rau qhov ntawd, muaj kev ntseeg ntau yam uas hais tias MSG ua rau mob taub hau thiab lwm yam kev xav uas yuav ua rau peb lub cev tsis zoo. Txawm li cas los xij, kev sim ob qhov muag tsis pom kev tsis pom muaj pov thawj rau qhov kev ntseeg no. Tam sim no, tib neeg ntseeg tias qhov sib xyaw no muaj kev nyab xeeb rau tib neeg noj.
Ntsev yog dab tsi?
Ntsev yog cov ntxhia uas feem ntau muaj cov sodium chloride. Yog li ntawd, cov tshuaj formula rau cov compound no yog NaCl. Cov tshuaj no muaj nyob rau hauv ntau qhov ntau hauv dej hiav txwv. Piv txwv li: qhib dej hiav txwv muaj 35 g / L khoom sodium chloride. Feem ntau, qhov sib xyaw no yog qhov tseem ceeb rau peb cov khoom noj hauv lub neej niaj hnub. Cov txheej txheem tseem ceeb uas tsim ntsev yog mining ntsev mines thiab evaporation ntawm seawater. Daim ntawv noj tau ntawm cov tshuaj no yog qhov tseem ceeb rau tib neeg kev noj qab haus huv thiab rau feem ntau cov tsiaj txhu thiab.
Ntxiv mus, nws kuj yog ib qho ntawm tsib qhov kev xav saj. Nws yog, yog li ntawd, cov khoom tseem ceeb hauv ntau yam khoom noj. Daim ntawv dav dav yog iodized ntsev uas muaj cov poov tshuaj iodide ntxiv. Feem ntau, peb ntxiv ntsev hauv kev ua zaub mov (raws li cov khoom xyaw hauv cov zaub mov tiav), rau kev khaws cia thiab tsw.
Qhov txawv ntawm MSG thiab ntsev yog dab tsi?
MSG yog monosodium glutamate, uas yog sodium ntsev ntawm glutamic acid whereas ntsev yog cov ntxhia, uas yog tsim los ntawm sodium chloride. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm MSG thiab ntsev. Txawm li cas los xij, ob lub tebchaw no muaj qhov zoo sib xws: lawv tshwm sim li dawb crystalline khoom sib txuas. Txawm li cas los xij, yog tias peb saib lawv cov khoom siv tshuaj, peb tuaj yeem txheeb xyuas qee qhov sib txawv ntawm MSG thiab ntsev. Cov khoom siv tshuaj xws li molar mass thiab melting point txawv nyob rau hauv ob qho tib si. Ntxiv mus, kuj muaj qee qhov sib txawv ntawm MSG thiab ntsev hauv lawv cov kev siv. Piv txwv li, peb tuaj yeem siv ntsev ua cov tshuaj tua kab mob thaum peb tuaj yeem siv MSG ua cov tshuaj tsw qab. Ntxiv rau qhov ntawd, vim qhov loj ntawm cov txee ion hauv MSG, cov ntsiab lus sodium ntawm MSG yog qhov sib piv qis heev rau cov ntsev.
Cov hauv qab no nthuav qhia tag nrho cov ntsiab lus ntawm qhov sib txawv ntawm MSG thiab ntsev.
Summary – MSG vs S alt
Txawm hais tias MSG thiab ntsev muaj qhov zoo sib xws, lawv muaj qee qhov sib txawv ntawm lawv cov tshuaj thiab lub cev. Qhov sib txawv tseem ceeb ntawm MSG thiab ntsev yog tias MSG yog sodium ntsev ntawm glutamic acid whereas ntsev yog feem ntau sodium chloride.
