DL-蛋氨酸

DL-蛋氨酸用途

【用途一】
用作生化试剂
【用途二】
适用于防治肝脏疾病和砷或苯等中毒，也可用于治疗痢疾和慢性传染病后因蛋白质不足而引起的营养不良症
【用途三】
营养增补剂。与L-型蛋氨酸的生理效果相同，但价格低(L-型由DL-型制得)，故一般均用DL-蛋氨酸。在燕麦、黑麦、米、玉米、小麦、花生粉、大豆、土豆、菠菜等植物性食品中属于限制氨基酸。添于上述食品中以改善氨基酸平衡。需要量随胱氨酸摄入量而异。成人男子需要量为1.1g/d。
海胆味与蛋氨酸有关，海胆甜味与甘氨酸、丙氨酸有关，苦味与缬氨酸有关，鲜味与谷氨酸等有关，因此可将这些氨基酸配制成调味剂。
尚用于氨基酸输液，综合氨基酸制剂。
按我国GB 2760—86规定可用作香料。
【用途四】
本品是饲料营养强化剂。畜禽缺乏蛋氨酸，会引起发育不良、体重减轻、肝肾功能减弱、肌肉萎缩、毛皮变质等。饲料中添加1kg蛋氨酸，相当于50kg鱼粉的营养价值。饲料中一般添加量为0,05%-0.2%。
【用途五】
商品蛋氨酸的含量≥98.5%，是禽畜类动物生长所必需的氨基酸之一，是生物合成蛋白质的“骨架”氨基酸，对动物的新陈代谢有很强的调节作用，广泛应用于医药、食品、饲料和化妆品等领域。其中在医药方面，可作为氨基酸输液和复合氨基酸的主要成分，还可用于合成药用维生素，利用其抗脂肪肝的作用，可用于生产保肝制剂；在食品方面，用于食品的氨基酸强化及食品保健品的加工，可用作营养增补剂，由于有特殊气味，故只用于鱼糕类的制品；在饲料工业中，蛋氨酸的用量最大，用作饲料的营养强化剂，弥补氨基酸平衡的饲料添加剂，在氨基酸类营养饲料添加剂的品种中，蛋氨酸60%，赖氨酸占30%，其他氨基酸约占10%。

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DL-蛋氨酸名称

[ CAS 号 ]:
59-51-8

[ 中文名 ]:
DL-甲硫氨酸

[ 英文名 ]:
DL-Methionine

[中文别名 ]:

[英文别名 ]:

Meonine
MFCD00063097
Metion
DL-2-Amino-4-(methylthio)butanoic acid
Neston
Urimeth
Metione
Dyprin
MET
Amurex

DL-蛋氨酸生物活性

[ 描述 ]:

DL-Methionine 是一种含有硫的必需氨基酸,具有氧化应激防御作用。DL-Methionine 可用于动物的天然饲料,还可以杀死马铃薯上的马铃薯金线虫 (H. rostochiensis)。

[ 相关类别 ]:

研究领域 >> 感染

研究领域 >> 炎症/免疫

[ 靶点 ]

H. rostochiensis[1]

[体外研究]

补充DL-蛋氨酸对动物生产性能的影响与日粮中粗蛋白(CP)含量密切相关。在20%粗蛋白日粮中添加DLM可降低肉仔鸡的腹部脂肪重量,而当日粮中含有23%粗蛋白时,情况并非如此。随着添加DL-蛋氨酸,胸肉产量增加,腹部脂肪含量降低,并且这种反应在以蛋白质水平较低(20.5%CP),而蛋白质水平较高(26%)[2]。

[体内研究]

DL-蛋氨酸显著降低马铃薯植株上喙突线虫的雌雄、囊和卵的数量。DL-蛋氨酸在接种后3天施用,几乎杀死所有线虫,且DL-蛋氨酸不会对植物生长产生不利影响[1]。

[参考文献]

[1]. K. evans, et al. Effects of amino acids on the reproduction of Heterodera rostochiensis. Nematologica, 1971, 17(4), 495-500.

[2]. Swennen Q, et al. Effects of dietary protein content and 2-hydroxy-4-methylthiobutanoic acid or DL-methionine supplementation on performance and oxidative status of broiler chickens. Br J Nutr. 2011 Dec;106(12):1845-54.

[3]. Garlich JD. Response of broilers to DL-methionine hydroxy analog free acid, DL-methionine, and L-methionine. Poult Sci. 1985 Aug;64(8):1541-8.

DL-蛋氨酸物理化学性质

[ 密度 ]:
1.2±0.1 g/cm3

[ 沸点 ]:
306.9±37.0 °C at 760 mmHg

[ 熔点 ]:
270-273ºC

[ 分子式 ]:
C₅H₁₁NO₂S

[ 分子量 ]:
149.211

[ 闪点 ]:
139.4±26.5 °C

[ 精确质量 ]:
149.051056

[ PSA ]:
88.62000

[ LogP ]:
0.37

[ 外观性状 ]:
白色结晶粉末带有一种微弱气味

[ 蒸汽压 ]:
0.0±1.4 mmHg at 25°C

[ 折射率 ]:
1.531

[ 储存条件 ]:
0-6°C

[ 稳定性 ]:
Stable. Incompatible with strong oxidising agents.

[ 水溶解性 ]:
1 M HCl: 0.5 M at 20 °C, clear, colorless | 2.9 g/100 mL (20 ºC)

DL-蛋氨酸MSDS

详细MSDS(安全技术说明书)

DL-蛋氨酸毒性和生态

CHEMICAL IDENTIFICATION

RTECS NUMBER :: PD0456000

CHEMICAL NAME :: Methionine, DL-

CAS REGISTRY NUMBER :: 59-51-8

LAST UPDATED :: 199706

DATA ITEMS CITED :: 14

MOLECULAR FORMULA :: C5-H11-N-O2-S

MOLECULAR WEIGHT :: 149.23

WISWESSER LINE NOTATION :: QV1YZ1S1

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: LD - Lethal dose

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: >5 gm/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: YACHDS Yakuri to Chiryo. Pharmacology and Therapeutics. (Raifu Saiensu Shuppan K.K., 2-5-13, Yaesu, Chuo-ku, Tokyo 104, Japan) V.1- 1972- Volume(issue)/page/year: 5,2041,1977

TYPE OF TEST :: LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :: Intraperitoneal

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 2 gm/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: YACHDS Yakuri to Chiryo. Pharmacology and Therapeutics. (Raifu Saiensu Shuppan K.K., 2-5-13, Yaesu, Chuo-ku, Tokyo 104, Japan) V.1- 1972- Volume(issue)/page/year: 5,2041,1977

TYPE OF TEST :: LD - Lethal dose

ROUTE OF EXPOSURE :: Intravenous

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: >400 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: YACHDS Yakuri to Chiryo. Pharmacology and Therapeutics. (Raifu Saiensu Shuppan K.K., 2-5-13, Yaesu, Chuo-ku, Tokyo 104, Japan) V.1- 1972- Volume(issue)/page/year: 5,2041,1977

TYPE OF TEST :: LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 4 gm/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: YACHDS Yakuri to Chiryo. Pharmacology and Therapeutics. (Raifu Saiensu Shuppan K.K., 2-5-13, Yaesu, Chuo-ku, Tokyo 104, Japan) V.1- 1972- Volume(issue)/page/year: 5,2041,1977

TYPE OF TEST :: LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :: Intraperitoneal

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 1500 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: YACHDS Yakuri to Chiryo. Pharmacology and Therapeutics. (Raifu Saiensu Shuppan K.K., 2-5-13, Yaesu, Chuo-ku, Tokyo 104, Japan) V.1- 1972- Volume(issue)/page/year: 5,2041,1977

TYPE OF TEST :: LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :: Intravenous

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 300 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: YACHDS Yakuri to Chiryo. Pharmacology and Therapeutics. (Raifu Saiensu Shuppan K.K., 2-5-13, Yaesu, Chuo-ku, Tokyo 104, Japan) V.1- 1972- Volume(issue)/page/year: 5,2041,1977 ** OTHER MULTIPLE DOSE TOXICITY DATA **

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 36 gm/kg/30D-C

TOXIC EFFECTS :: Blood - pigmented or nucleated red blood cells Blood - changes in leukocyte (WBC) count

REFERENCE :: JONUAI Journal of Nutrition. (Subscription Dept., 9650 Rockville Pike, Bethesda, MD 20014) V.1- 1928- Volume(issue)/page/year: 79,101,1963

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 21 gm/kg/13D-C

TOXIC EFFECTS :: Liver - changes in liver weight Kidney, Ureter, Bladder - changes in bladder weight

REFERENCE :: JONUAI Journal of Nutrition. (Subscription Dept., 9650 Rockville Pike, Bethesda, MD 20014) V.1- 1928- Volume(issue)/page/year: 106,1714,1976

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 39 gm/kg/20D-C

TOXIC EFFECTS :: Liver - changes in liver weight Kidney, Ureter, Bladder - changes in bladder weight Endocrine - changes in spleen weight

REFERENCE :: JONUAI Journal of Nutrition. (Subscription Dept., 9650 Rockville Pike, Bethesda, MD 20014) V.1- 1928- Volume(issue)/page/year: 106,1714,1976

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Bird - turkey

DOSE/DURATION :: 33600 mg/kg/4W-C

TOXIC EFFECTS :: Nutritional and Gross Metabolic - weight loss or decreased weight gain

REFERENCE :: POSCAL Poultry Science. (Poultry Science Assoc., Inc., 309 W. Clark St., Champaign, IL 61820) V.1- 1921- Volume(issue)/page/year: 57,699,1978 ** REPRODUCTIVE DATA **

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

DOSE :: 40 gm/kg

SEX/DURATION :: female 1-20 day(s) after conception

TOXIC EFFECTS :: Reproductive - Fertility - other measures of fertility Reproductive - Effects on Embryo or Fetus - extra-embryonic structures (e.g., placenta, umbilical cord) Reproductive - Effects on Embryo or Fetus - fetotoxicity (except death, e.g., stunted fetus)

REFERENCE :: JRPFA4 Journal of Reproduction and Fertility. (Biochemical Soc. Book Depot, POB 32, Commerce Way, Colchester, Essex CO2 8HP, UK) V.1- 1960- Volume(issue)/page/year: 33,109,1973 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - X3271 No. of Facilities: 1272 (estimated) No. of Industries: 5 No. of Occupations: 27 No. of Employees: 16781 (estimated) No. of Female Employees: 4397 (estimated)

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DL-蛋氨酸安全信息

[ 个人防护装备 ]:
Eyeshields;Gloves;type N95 (US);type P1 (EN143) respirator filter

[ 危害码 (欧洲) ]:
Xi: Irritant;

[ 风险声明 (欧洲) ]:
R33

[ 安全声明 (欧洲) ]:
S24/25

[ 危险品运输编码 ]:
NONH for all modes of transport

[ WGK德国 ]:
2

[ RTECS号 ]:
PD0457000

[ 海关编码 ]:
2930400000

DL-蛋氨酸合成路线

详细合成路线

DL-蛋氨酸上下游产品

DL-蛋氨酸上游产品

DL-蛋氨酸下游产品

DL-蛋氨酸制备

【方法一】
通常采用以丙稀醛为原料的合成法。
丙稀醛和甲硫醇在甲酸和乙酸铜的存在下，缩合生成3-甲硫基丙醛。再与氰化钠和碳酸氢铵溶液混合。在90℃下反应得到甲硫基乙基乙内酰脲。不需要分离提纯，即可与28%的氢氧化钠溶液一起加热至180℃，水解生成蛋氨酸钠。用盐酸中和得成品蛋氨酸。每吨产品消耗丙稀醛480kg、甲硫醇400kg、氰化钠420kg。
【方法二】
D-构型和L-构型的蛋氨酸生理作用相同，多采用DL-型，因此以合成法制造有利。一般由丙烯醛与甲硫醇反应后制得。
【方法三】
可采用提取法制备蛋氨酸，但工业上有以下方法：1. 罗纳－普朗克工艺2. 德固萨DL-蛋氨酸工艺原料消耗定额：丙烯醛480kg/t、甲硫醇400kg/t、氰化钠420kg/t。

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DL-蛋氨酸海关

[ 海关编码 ]: 2930400000

DL-蛋氨酸文献

The Arabidopsis cellulose synthase complex: a proposed hexamer of CESA trimers in an equimolar stoichiometry.

Plant Cell 26(12) , 4834-42, (2015)

Cellulose is the most abundant renewable polymer on Earth and a major component of the plant cell wall. In vascular plants, cellulose synthesis is catalyzed by a large, plasma membrane-localized cellu...

A survey of the interactome of Kaposi's sarcoma-associated herpesvirus ORF45 revealed its binding to viral ORF33 and cellular USP7, resulting in stabilization of ORF33 that is required for production of progeny viruses.

J. Virol. 89(9) , 4918-31, (2015)

The ORF45 protein of Kaposi's sarcoma-associated herpesvirus (KSHV) is a gammaherpesvirus-specific immediate-early tegument protein. Our previous studies have revealed its crucial roles in both early ...

Biomolecular imaging with a C60-SIMS/MALDI dual ion source hybrid mass spectrometer: instrumentation, matrix enhancement, and single cell analysis.

J. Am. Soc. Mass Spectrom. 25(11) , 1897-907, (2014)

We describe a hybrid MALDI/C(60)-SIMS Q-TOF mass spectrometer and corresponding sample preparation protocols to image intact biomolecules and their fragments in mammalian spinal cord, individual inver...

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DL-蛋氨酸

DL-蛋氨酸用途

DL-蛋氨酸名称

DL-蛋氨酸生物活性

DL-蛋氨酸物理化学性质

DL-蛋氨酸MSDS

详细MSDS(安全技术说明书)

DL-蛋氨酸毒性和生态

CHEMICAL IDENTIFICATION

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

DL-蛋氨酸安全信息

DL-蛋氨酸合成路线

详细合成路线

DL-蛋氨酸上下游产品

DL-蛋氨酸上游产品

DL-蛋氨酸下游产品

DL-蛋氨酸制备

DL-蛋氨酸海关

DL-蛋氨酸文献

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