白色结晶粉末,稍有硫化合物的特殊臭气,味微甜。易溶于水、稀酸和稀碱,难溶于乙醇、乙醚等有机溶剂。1%的水溶液pH值为5.6~6.1。对热及空气稳定,对强酸不稳定。
以丙烯醛为原料合成制得。
用作饲料的营养强化剂,可以弥补氨基酸平衡。畜禽缺乏蛋氨酸,会引起发育不良、体重减轻、肝肾机能减弱、肌肉萎缩、皮毛变质等。饲料中添加1kg蛋氨酸,相当于50kg鱼粉的营养价值。一般添加量为0.05%~0.2%。
肝昏迷忌用。遮光,密闭保存。
中文名 | DL-蛋氨酸 |
英文名 | DL-Methionine |
别名 | 甲硫氨酸 甲硫氨基酸 混旋蛋氨酸 甲硫基丁氨酸 DL-蛋氨酸 DL-甲硫氨酸 DL-甲硫氨基酸 2-氨基-4-甲硫基丁酸 2-氨基-4-甲巯基丁酸 Α-氨基-Γ-甲巯基丁酸 DL-2-氨基-4-甲硫基丁酸 |
英文别名 | Neston Metione Urimeth Pedameth Petameth Thiomedon H-DL-Met-OH DL-Methionine DL-Methoionine (RS)-2-Amino-3-methylthiobutansαure DL-2-Amino-4-(methylthio)butyric acid (R,S)-2-Amino-4-methylsulfanyl-butyricacid |
CAS | 59-51-8 |
EINECS | 200-432-1 |
化学式 | C5H11NO2S |
分子量 | 149.21 |
InChI | InChI=1/C5H11NO2S/c1-9-3-2-4(6)5(7)8/h4H,2-3,6H2,1H3,(H,7,8) |
InChIKey | FFEARJCKVFRZRR-UHFFFAOYSA-N |
密度 | 1.34 |
熔点 | 284°C (dec.)(lit.) |
沸点 | 306.9±37.0 °C(Predicted) |
比旋光度 | -1~+1°(D/20℃)(c=8,HCl) |
水溶性 | 2.9 g/100 mL (20 ºC) |
JECFA Number | 1424 |
溶解度 | 1 m HCl: 0.5M at 20 °C,澄清,无色 |
折射率 | 1.5216 (estimate) |
酸度系数 | 2.13(at 25℃) |
存储条件 | 2-8°C |
稳定性 | 稳定。与强氧化剂不相容。 |
敏感性 | Sensitive to light |
外观 | 晶体或结晶粉末 |
颜色 | White |
Merck | 14,5975 |
BRN | 636185 |
物化性质 | DL-蛋氨酸从醇中结成白色薄片状结晶或结晶性粉末,微甜,有特殊气味。无旋光性。 能溶于水、稀酸和稀碱类,微溶于95%的醇,不溶于醚。 |
MDL号 | MFCD00063096 |
危险品标志 | Xi - 刺激性物品 |
风险术语 | R33 - 有累积效应的危险品。 R36/37/38 - 刺激眼睛、呼吸系统和皮肤。 |
安全术语 | S24/25 - 避免与皮肤和眼睛接触。 S36 - 穿戴适当的防护服。 S26 - 不慎与眼睛接触后,请立即用大量清水冲洗并征求医生意见。 |
WGK Germany | 2 |
RTECS | PD0457000 |
FLUKA BRAND F CODES | 10-23 |
TSCA | Yes |
海关编号 | 29304090 |
上游原料 | 水 一水合醋酸铜 L-蛋氨酸 |
参考资料 展开查看 | 1. 李媛媛, 韩立华, 鞠豪,等. 海参胶对胰岛素抵抗模型小鼠慢性炎症的改善作用[J]. 中国海洋药物, 2018, v.37;No.182(02):32-38. 2. 魏书艳, 肖留斌, 谭永安,等. 转Bt棉与常规棉受中黑盲蝽危害后生理代谢指标的变化[J]. 南京农业大学学报, 2010, 33(005):55-59. 3. 邱镇 于凡 李国转 等. 不同环境发汗对发汗丹参有效成分含量及体外抗氧化活性的影响[J]. 天然产物研究与开发 2017(10):82-86+114. 4. 谈梦霞, 陈佳丽, 邹立思,等. 不同贮藏条件对麦冬药材质量的影响[J]. 中药材, 2018(11). 5. Yang, X., Sun, X., Feng, Z. et al. Open-tubular capillary electrochromatography with β-cyclodextrin-functionalized magnetic nanoparticles as stationary phase for enantioseparation of dansylated amino acids. Microchim Acta 186, 244 (2019). https://doi.org/1 6. Liu, Changhe, et al. "Metformin regulates the expression of SK2 and SK3 in the atria of rats with type 2 diabetes mellitus through the NOX4/p38MAPK signaling pathway." Journal of cardiovascular pharmacology 72.5 (2018): 205-213.10.1097/FJC.0000000000000615 7. Xinru Xu, Mingguang Yu, Junaid Raza, Huanlu Song, Lin Gong, Wenqing Pan, Study of the mechanism of flavor compounds formed via taste-active peptides in bovine bone protein extract, LWT, Volume 137, 2021, 110371, ISSN 0023-6438, https://doi.org/10.1016/j.lw 8. Qu, Fei, et al. "Fluorescent Detection of 2, 4-Dichlorophenoxyacetic Acid in Food Samples Based on Covalent Organic Frameworks and MnO 2 Nanosheets." Food Analytical Methods 13.10 (2020): 1842-1851.https://doi.org/10.1007/s12161-020-01807-2 9. [IF=5.833] Yang Xuan et al."Open-tubular capillary electrochromatography with β-cyclodextrin-functionalized magnetic nanoparticles as stationary phase for enantioseparation of dansylated amino acids."Microchim Acta. 2019 Apr;186(4):1-8 10. [IF=6.057] Chenglong Sun et al."1,1′-binaphthyl-2,2′-diamine as a novel MALDI matrix to enhance the in situ imaging of metabolic heterogeneity in lung cancer."Talanta. 2020 Mar;209:120557 11. [IF=5.537] Yurong Ma et al."Pre-cut NaCl solution treatment effectively inhibited the browning of fresh-cut potato by influencing polyphenol oxidase activity and several free amino acids contents."Postharvest Biol Tec. 2021 Aug;178:111543 12. [IF=4.952] Huan Zhang et al."Label-free quantification proteomics reveals the active peptides from protein degradation during anaerobic fermentation of tea."Lwt Food Sci Technol. 2021 Oct;150:111950 13. [IF=4.821] Peng Wan et al."Analysis of aroma-active compounds in bighead carp head soup and their influence on umami of a model soup."Microchem J. 2021 Sep;168:106436 14. [IF=4.556] Dandan Zhao et al."Physico-chemical properties and free amino acids profiles of six wolfberry cultivars in Zhongning."J Food Compos Anal. 2020 May;88:103460 15. [IF=4.35] Xiaomei Dai et al."1-Methylcyclopropene Preserves the Quality of Chive (Allium schoenoprasum L.) by Enhancing Its Antioxidant Capacities and Organosulfur Profile during Storage."Foods. 2021 Aug;10(8):1792 16. [IF=2.352] Man Lyu et al."Inhibition effect of thiol-type antioxidants on protein oxidative aggregation caused by free radicals."Biophys Chem. 2020 May;260:106367 17. [IF=1.618] Wang Shengnan et al."Simultaneous Determination of Iridoid Glycosides, Phenylpropanoid Glycosides, Organic Acids, Nucleosides and Amino Acids in Scrophulariae Radix Processed by Different Processing Methods by HPLC-QTRAP-MS/MS."J Chromatogr Sci. 2021 Jun; 18. [IF=4.242] Hang Yang et al."Dietary leucine requirement of juvenile largemouth bass (Micropterus salmoides) based on growth, nutrient utilization and growth-related gene analyses."Aquaculture. 2022 Jun;555:738207 19. [IF=7.514] Shibin Deng et al."Comparison of pyrazines formation in methionine/glucose and corresponding Amadori rearrangement product model."Food Chem. 2022 Jul;382:132500 20. [IF=3.463] Xiaomei Dai et al."S-alk(en)ylcysteine sulfoxides biosynthesis and free amino acids profile in different parts of postharvest chive (Allium schoenoprasum L.)."SCIENTIA HORTICULTURAE. 2022 Sep;303:111191 |
白色结晶粉末,稍有硫化合物的特殊臭气,味微甜。易溶于水、稀酸和稀碱,难溶于乙醇、乙醚等有机溶剂。1%的水溶液pH值为5.6~6.1。对热及空气稳定,对强酸不稳定。
以丙烯醛为原料合成制得。
用作饲料的营养强化剂,可以弥补氨基酸平衡。畜禽缺乏蛋氨酸,会引起发育不良、体重减轻、肝肾机能减弱、肌肉萎缩、皮毛变质等。饲料中添加1kg蛋氨酸,相当于50kg鱼粉的营养价值。一般添加量为0.05%~0.2%。
肝昏迷忌用。遮光,密闭保存。
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