Glycine

Glycine(abbreviated Gly), tseem hu ua acetic acid, yog ib qho tsis tseem ceeb amino acid, nws cov tshuaj formula yog C2H5NO2.Glycine yog ib qho amino acid ntawm endogenous antioxidant txo glutathione, uas yog feem ntau supplemented los ntawm exogenous qhov chaw thaum lub cev nyob rau hauv kev nyuaj siab heev. , thiab qee zaum hu ua semi-tseem ceeb amino acid.Glycine yog ib qho ntawm cov amino acids yooj yim tshaj plaws.

Chemical Properties:

Dawb monoclinic los yog hexagonal siv lead ua, los yog dawb crystalline hmoov.Tsis muaj ntxhiab, nrog tshwj xeeb qab zib saj.Yooj yim soluble hauv dej, solubility hauv dej: 25g / 100ml ntawm 25 ℃;Ntawm 50 ℃, 39.1g / 10Chemicalbook0ml;54.4g / 100ml ntawm 75 ℃;Ntawm 100 ℃, nws yog 67.2g / 100ml.Tsis tshua muaj insoluble hauv ethanol, txog 0.06g yaj hauv 100g anhydrous ethanol.Yuav luag insoluble hauv acetone thiab ether.

Txoj kev tsim khoom:

Txoj kev Strecker thiab chloro-acetic acid ammonification method yog txoj kev npaj tseem ceeb.

Txoj kev Strecker:formaldehyde, sodium cyanide, ammonium chloride cov tshuaj tiv thaiv ua ke, tom qab ntawd ntxiv glacial acetic acid, nag lossis daus ntawm methylene aminoacetonitrile;Amino acetonitrile sulfate tau txais los ntawm kev ntxiv methylene acetonitrile rau ethanol nyob rau hauv muaj sulfuric acid.Cov sulfate yog decomposed los ntawm barium hydroxide kom tau glycine barium ntsev;Tom qab ntawd sulfuric acid ntxiv rau precipitate lub barium, lim nws, mloog zoo rau cov filtrate, thiab tom qab txias nws precipitates glycine crystals.Kev sim [NaCN] –> [NH4Cl] CH2 = N – CH2CNCH2 = N – CH2CN [- H2SO4] –> [C2H5OH] H2NCH2CN, H1SO4H2NCH2CN, – H2SO4 [BChemicalbooka (OH) 2] – (NH2CH2CON) CON 2 ba [- H2SO4] -> H2NCH2COOH

Chloro-acetic acid ammonia txoj kev:ammonia dej thiab ammonium bicarbonate sib tov cua sov rau 55 ℃, ntxiv chloro-acetic acid aqueous tov, tshuaj tiv thaiv rau 2h, ces cua sov rau 80 ℃ kom tshem tawm cov seem ammonia, decolorization nrog activated carbon, pom.Cov tshuaj decolorizing tau ntxiv nrog 95% ethanol kom cov glycine crystallize tawm, lim, ntxuav nrog ethanol thiab qhuav kom tau cov khoom nyoos.Dissolve hauv dej kub thiab recrystallize nrog ethanol kom tau glycine.H2NCH2COOH ClCH2COOH [NH4HCO3] -> [NH4OH]

Tsis tas li ntawd, glycine kuj tau muab rho tawm los ntawm txhob lo lo ntxhuav hydrolyzate thiab hydrolyzed nrog gelatin ua raw khoom.

Daim ntawv thov:

Teb zaub mov

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

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

3, nws muaj qee yam inhibitory cuam tshuam rau kev yug me nyuam ntawm subtilis thiab Escherichia coli, yog li nws tuaj yeem siv los ua cov khoom noj khoom haus 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 qab zib, cheese, margarine tuaj yeem txuas ntxiv lub neej cia ntawm 3 ~ 4 zaug;

5. Txhawm rau kom ruaj khov lard hauv cov khoom ci, qabzib 2.5% thiab glycine 0.5% tuaj yeem ntxiv;

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

7, saj ntawm ntsev thiab vinegar tuaj yeem ua lub luag haujlwm tsis zoo, cov khoom siv ntsev ntxiv 0.3% ~ 0.7%, acid cov khoom 0.05% ~ 0.5%;

8, raws li peb cov kev cai GB2760-96 tuaj yeem siv ua txuj lom.

Agricultural teb

1. Nws yog siv los ua ib qho additive thiab attractant kom cov amino acids nyob rau hauv pub rau nqaij qaib, tsiaj nyeg, tshwj xeeb tshaj yog cov tsiaj.Siv raws li hydrolyzed protein additive, raws li ib tug synergistic tus neeg sawv cev ntawm hydrolyzed protein;

2, nyob rau hauv zus tau tej cov tshuaj tua kab siv nyob rau hauv lub synthesis ntawm pyrethroid insecticide intermediate glycine ethyl ester hydrochloride, kuj yuav synthesized fungicide isobiurea thiab herbicide solid glyphosate.

Kev lag luam teb

1, siv los ua cov tshuaj pleev plating;

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

3, siv los ua cephalosporin raw cov ntaub ntawv, sulfoxamycin intermediate, imidazolacetic acid synthesis intermediate, thiab lwm yam;

4, siv los ua cov khoom siv tshuaj pleev ib ce.

Cov khoom ntim: 25kg / hnab

Kev khaws cia yuav tsum tau txias, qhuav thiab ventilate.