Glycine

Glycine(luv luv Gly), tseem hu ua acetic acid, yog cov amino acid tsis tseem ceeb, nws cov mis tshuaj yog C2H5NO2. Glycine yog cov amino acid ntawm endogenous antioxidant txo glutathione, uas feem ntau yog ntxiv los ntawm cov chaw sab nraud thaum lub cev nyob hauv kev ntxhov siab hnyav, thiab qee zaum hu ua semi-essential amino acid. Glycine yog ib qho ntawm cov amino acids yooj yim tshaj plaws.

Cov khoom siv tshuaj lom neeg:

Dawb monoclinic los yog hexagonal siv lead ua, los yog hmoov crystalline dawb. Tsis muaj ntxhiab, nrog rau saj qab zib tshwj xeeb. Yooj yim yaj hauv dej, yaj hauv dej: 25g / 100ml ntawm 25 ℃; Ntawm 50 ℃, 39.1g / 10Chemicalbook 0ml; 54.4g / 100ml ntawm 75 ℃; Ntawm 100 ℃, nws yog 67.2g / 100ml. Tsis tshua muaj soluble hauv ethanol, kwv yees li 0.06g yaj hauv 100g anhydrous ethanol. Yuav luag tsis yaj hauv acetone thiab ether.

Txoj kev tsim khoom:

Txoj kev Strecker thiab txoj kev chloro-acetic acid ammonification yog cov txheej txheem npaj tseem ceeb.

Txoj kev Strecker:formaldehyde, sodium cyanide, ammonium chloride ua ke, ces ntxiv glacial acetic acid, precipitation ntawm methylene aminoacetonitrile; Amino acetonitrile sulfate tau txais los ntawm kev ntxiv methylene acetonitrile rau ethanol nyob rau hauv lub xub ntiag ntawm sulfuric acid. Lub sulfate yog decomposed los ntawm barium hydroxide kom tau txais glycine barium ntsev; Tom qab ntawd sulfuric acid yog ntxiv rau precipitate lub barium, lim nws, concentrate lub filtrate, thiab tom qab txias nws precipitates glycine crystals. Ib qho kev sim [NaCN] - > [NH4Cl] CH2 = N - CH2CNCH2 = N - CH2CN [- H2SO4] - > [C2H5OH] H2NCH2CN, H1SO4H2NCH2CN, - H2SO4 [BChemicalbooka (OH) 2] - (NH2CH2COO) 2 ba (NH2CH2COO) 2 ba [- H2SO4] - > H2NCH2COOH

Txoj kev ammoniation ntawm Chloro-acetic acid:dej ammonia thiab ammonium bicarbonate sib xyaw ua ke kom sov txog 55 ℃, ntxiv cov kua chloro-acetic acid aqueous, ua kom sov li 2 teev, tom qab ntawd ua kom sov txog 80 ℃ kom tshem tawm cov ammonia seem, tshem tawm cov xim nrog cov pa roj carbon activated, lim. Cov kua tshem tawm xim tau ntxiv nrog 95% ethanol kom ua rau glycine crystallize tawm, lim, ntxuav nrog ethanol thiab ziab kom tau cov khoom nyoos. Yaj rau hauv dej kub thiab rov ua dua nrog ethanol kom tau glycine. H2NCH2COOH ClCH2COOH [NH4HCO3] - > [NH4OH]

Tsis tas li ntawd, glycine kuj tseem rho tawm los ntawm silk hydrolysate thiab hydrolyzed nrog gelatin ua raw khoom.

Daim Ntawv Thov:

Thaj teb zaub mov

1, siv ua cov tshuaj biochemical reagents, kuj siv tau rau hauv tshuaj, pub thiab khoom noj khoom haus additives, nitrogen chiv kev lag luam siv ua tus neeg sawv cev decarbonizing tsis muaj tshuaj lom;

2, siv ua khoom noj khoom haus ntxiv, feem ntau yog siv rau seasoning thiab lwm yam;

3, nws muaj qee yam kev cuam tshuam rau kev tsim cov subtilis thiab Escherichia coli, yog li nws tuaj yeem siv los ua cov tshuaj preservative rau cov khoom surimi, txiv laum huab xeeb, thiab lwm yam., Ntxiv 1% ~ 2%;

4, muaj cov nyhuv antioxidant (siv nws cov hlau chelate kev koom tes), ntxiv rau cream, cheese, margarine tuaj yeem ntev lub neej cia ntawm 3 ~ 4 zaug;

5. Yuav kom cov roj lard ruaj khov hauv cov khoom ci, glucose 2.5% thiab glycine 0.5% tuaj yeem ntxiv;

6. Ntxiv 0.1% ~ 0.5% rau hmoov nplej rau cov noodles ua noj sai, uas tuaj yeem ua lub luag haujlwm seasoning tib lub sijhawm;

7, qhov saj ntawm ntsev thiab kua txiv hmab txiv ntoo tuaj yeem ua lub luag haujlwm buffer, qhov ntau ntawm cov khoom ntsev ntxiv 0.3% ~ 0.7%, cov khoom kua qaub 0.05% ~ 0.5%;

8, raws li peb cov cai GB2760-96 siv tau ua cov txuj lom.

Kev ua liaj ua teb

1. Feem ntau nws yog siv los ua ib qho khoom ntxiv thiab ib qho khoom nyiam kom nce cov amino acids hauv cov khoom noj rau nqaij qaib, tsiaj txhu, tshwj xeeb tshaj yog tsiaj. Siv ua ib qho khoom ntxiv protein hydrolyzed, ua ib tus neeg sawv cev synergistic ntawm cov protein hydrolyzed;

2, hauv kev tsim cov tshuaj tua kab uas siv rau hauv kev tsim cov tshuaj tua kab pyrethroid intermediate glycine ethyl ester hydrochloride, kuj tseem tuaj yeem tsim cov tshuaj fungicide isobiurea thiab herbicide solid glyphosate.

Kev lag luam teb

1, siv ua plating kua additive;

2, siv rau hauv kev lag luam kws tshuaj, kev kuaj biochemical thiab cov organic synthesis;

3, siv ua cov khoom siv cephalosporin raw, sulfoxamycin intermediate, imidazolacetic acid synthesis intermediate, thiab lwm yam.;

4, siv ua cov khoom siv raw khoom zoo nkauj.

Khoom Ntim: 25kg / hnab

Kev khaws cia yuav tsum nyob rau qhov txias, qhuav thiab muaj cua nkag.