Glycine

Glycine(e khutsufalitsoeng Gly), e tsejoang hape e le acetic acid, ke amino acid e seng ea bohlokoa, mokhoa oa eona oa lik'hemik'hale ke C2H5NO2.Glycine ke amino acid ea endogenous antioxidant e fokotsehileng glutathione, eo hangata e tlatsitsoeng ke mehloli e sa tloaelehang ha 'mele o le tlas'a khatello e matla. , 'me ka linako tse ling e bitsoa semi-essential amino acid.Glycine ke e' ngoe ea li-amino acid tse bonolo ka ho fetisisa.

Lintho tsa lik'hemik'hale:

White monoclinic kapa hexagonal crystal, kapa phofo e tšoeu ea kristale.Ha e na monko, e nang le tatso e khethehileng e monate.Ho qhibiliha ha bonolo metsing, ho qhibiliha ka metsing: 25g/100ml ho 25℃;Ho 50℃, 39.1g/10Chemicalbook0ml;54.4g/100ml ho 75℃;Ho 100 ℃, ke 67.2g/100ml.Ha e qhibilihe haholo ka har'a ethanol, hoo e ka bang 0.06g e qhibilihisoa ka 100g anhydrous ethanol.E batla e sa qhibilihe ka har'a acetone le ether.

Mokhoa oa tlhahiso:

Mokhoa oa Strecker le mokhoa oa chloro-acetic ammonification ke mekhoa ea mantlha ea ho lokisa.

Mokhoa oa Strecker:formaldehyde, sodium cyanide, ammonium chloride reaction hammoho, ebe eketsa glacial acetic acid, precipitation ea methylene aminoacetonitrile;Amino acetonitrile sulfate e ile ea fumanoa ka ho eketsa methylene acetonitrile ho ethanol boteng ba sulfuric acid.Sulfate e qhibiliha ke barium hydroxide ho fumana letsoai la glycine barium;Ebe sulfuric acid e eketsoa ho precipitate barium, e sefa, ho tsepamisa mohopolo ho filtrate, 'me ka mor'a ho pholile e hlahisa likristale tsa glycine.Teko [NaCN] – > [NH4Cl] CH2 = N – CH2CNCH2 = N – CH2CN [- H2SO4] – > [C2H5OH] H2NCH2CN, H1SO4H2NCH2CN, – H2SO4 [BHemicalbooka (OH) 2] – (2CONH2CH2CH2CH2CH) – (NH2CH2CN) 2 ba [- H2SO4] – > H2NCH2COOH

Mokhoa oa ho etsa ammoniation oa chloro-acetic acid:metsi a ammonia le ammonium bicarbonate e tsoakiloeng ho futhumatsa ho 55 ℃, e eketsa chloro-acetic acid aqueous solution, reaction for 2h, ebe e futhumatsa ho 80 ℃ ho tlosa ammonia e setseng, decolorization le activated carbon, filtration.Tharollo ea decolorizing e ile ea eketsoa ka 95% ea ethanol ho etsa hore glycine e khanye, e tlhotliloeng, e hlatsuoe ka ethanol le ho omisoa ho fumana sehlahisoa se tala.Qhala ka metsing a chesang 'me u boele u be le ethanol ho fumana glycine.H2NCH2COOH ClCH2COOH [NH4HCO3] – > [NH4OH]

Ho feta moo, glycine e boetse e ntšoa ho silika hydrolyzate le hydrolyzed ka gelatin e le lisebelisoa tse tala.

Kopo:

Tšimo ea lijo

1, e sebelisoang e le li-reagents tsa biochemical, e ka boela ea sebelisoa meriana, lijo le li-additives tsa lijo, indasteri ea manyolo a naetrojene e sebelisoang e le ntho e se nang chefo ea decarbonizing;

2, e sebelisoang e le tlatsetso ea phepo e nepahetseng, e sebelisoang haholo bakeng sa linoko le likarolo tse ling;

3, e na le phello e itseng ea ho thibela ho hlahisa li-subtilis le Escherichia coli, kahoo e ka sebelisoa e le se sireletsang bakeng sa lihlahisoa tsa surimi, peanut butter, joalo-joalo, eketsa 1% ~ 2%;

4, e na le phello ea antioxidant (ho sebelisa ts'ebelisano ea chelate ea tšepe), e kenyellelitsoeng ho tranelate, chisi, margarine e ka lelefatsa bophelo ba polokelo ka makhetlo a 3 ~ 4;

5. Ho tsitsisa lard ka thepa e halikiloeng, tsoekere 2.5% le glycine 0.5% e ka eketsoa;

6. Eketsa 0.1% ~ 0.5% ho phofo ea koro bakeng sa li-noodle tsa ho pheha ka potlako, tse ka bapalang karolo ea li-seasoning ka nako e le 'ngoe;

7, tatso ea letsoai le asene e ka bapala karolo ea buffer, palo ea lihlahisoa tsa letsoai tse ekelitsoeng 0.3% ~ 0.7%, lihlahisoa tsa asiti 0.05% ~ 0.5%;

8, ho latela melaoana ea rona ea GB2760-96 e ka sebelisoa e le linoko.

Tšimo ea temo

1. E sebelisoa haholo-holo e le ntho e tlatsetsang le e hohelang ho eketsa li-amino acid lijong tsa likhoho, liphoofolo tse ruiloeng, haholo-holo liphoofolo tse ruuoang lapeng.E sebelisoa e le motsoako oa protheine ea hydrolyzed, e le moemeli oa synergistic oa protheine ea hydrolyzed;

2, tlhahisong ea chefo e bolaeang likokoanyana e sebelisoang ha ho etsoa sebolaea-likokoanyana sa pyrethroid intermediate glycine ethyl ester hydrochloride, e ka boela ea etsoa fungicide isobiurea le herbicide solid glyphosate.

Sebaka sa indasteri

1, e sebelisoang e le tlatsetso ea tharollo ea plating;

2, e sebelisoang indastering ea meriana, liteko tsa biochemical le organic synthesis;

3, e sebelisoang e le lisebelisoa tse tala tsa cephalosporin, sulfoxamycin intermediate, imidazolacetic acid synthesis intermediate, joalo-joalo;

4, e sebelisoang e le lisebelisoa tse tala tsa litlolo.

Sephutheloana sa lihlahisoa: 25kg / mokotla

Polokelo e lokela ho ba sebakeng se pholileng, se omeletseng le se nang le ventilate.