白色结晶粉末,无臭,有特殊甜味,甜度约为蔗糖的70%。200℃以上升华。易溶于水(17%,25℃),微溶于乙醇(0.2%,80%冷酒精).不溶于乙醚。5%水溶液pH值5.5—5.7。化学性能稳定。
主要以L-天冬氨酸为原料,经脱羧、杀酶、脱色、过滤、结晶、离心、洗涤、干燥得成品。
用作增味剂。可增加调味品的调味效果;还可用作酸味矫正剂,改善有机酸的酸味。
中文名 | L-丙氨酸 |
英文名 | L-Alanine |
别名 | 丙氨酸 L-丙氨 L-丙氨酸 α-丙氨酸 L-丙胺酸 2-氨基丙酸 L-氨基丙酸 α-氨基丙酸 L-初油氨基酸 L-α-丝析氨酸 L-2-丝析丙酸 L-丙氨酸 (停产) L-2-氨基丙酸,L-2-AMINOPROPIONIC ACID |
英文别名 | Ala Alanine H-Ala-OH L-Alanine L-alanine-12C3 L-Alpha-Alanine 2-Aminopropanoicacid 2-Aminopropanoic acid Tenofovir Impurity 80 2-Aminopropanoic Acid 2-Amino-Propionic Acid (S)-2-Aminopropansαure (S)-2-Aminopropionsαure L-2-Aminopropionic acid (s)-2-aminopropanoicacid Aspartic Acid Impurity 6 (S)-2-Aminopropanoic acid |
CAS | 56-41-7 |
EINECS | 200-273-8 |
化学式 | C3H7NO2 |
分子量 | 89.09 |
InChI | InChI=1/C3H7NO2/c1-2(4)3(5)6/h2H,4H2,1H3,(H,5,6)/t2-/m0/s1 |
InChIKey | QNAYBMKLOCPYGJ-REOHCLBHSA-N |
密度 | 1,432 g/cm3 |
熔点 | 314.5 °C |
沸点 | 212.9±23.0 °C(Predicted) |
比旋光度 | 14.5 º (c=10,6N HCl,dry sub.) |
水溶性 | 166.5 g/L (25 ºC) |
溶解度 | H2O: 100 mg/mL |
折射率 | 1.4650 (estimate) |
酸度系数 | 2.34(at 25℃) |
PH值 | 5.5-6.5 (100g/l, H2O, 20℃) |
存储条件 | 2-8°C |
稳定性 | 稳定。与强氧化剂不相容。 |
外观 | 粉末 |
颜色 | White to almost white |
最大波长(λmax) | ['λ: 260 nm Amax: ≤0.03', , 'λ: 280 nm Amax: ≤0.02'] |
Merck | 14,204 |
BRN | 1720248 |
物化性质 | 白色结晶或结晶性粉末,无异臭,带有甜味。 易溶于水(16.5%,25℃),不溶于乙醚或丙酮。 分解温度为297℃>,mp233℃,等电点5.79,pka-COOH=2.34, Pka-NH3=9.60, [α]25D+14.6 (C=0.5~2.0g/ml, 5mol/L HCl)。L-丙氨酸是人体非必需氨基酸,在生物体内甘氨酸的氨基转移至丙酮酸而成。在葡萄糖-丙氨酸循环中, 保持低血氨水平。丙氨酸是血中氮的优良运输工具。 又是一种有效生糖氨基酸。 |
MDL号 | MFCD00064410 |
危险品标志 | Xi - 刺激性物品 |
风险术语 | 36/37/38 - 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 | 3 |
RTECS | AY2990000 |
FLUKA BRAND F CODES | 10 |
TSCA | Yes |
海关编号 | 29224995 |
Hazard Class | IRRITANT |
上游原料 | 活性炭 丙酸 磷酸二氢钾 甲醇溶液 富马酸 酪蛋白 溴化铵 酵母膏 牛肉膏 2-溴丙酸 三角烧瓶 |
下游产品 | 雷米普利 5-乙氧基-4-甲基唑 D-别苏氨酸 |
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Ji, Youan, et al. "Highly efficient separation of indole from model wash oil using tetraethyl ammonium amino acid ionic liquids." Separation and Purification Technology 258 (2021): 117997.https://doi.org/10.1016/j.seppur.2020.117997 16. Zhao, Zheng, et al. "Cholinium amino acids-glycerol mixtures: New class of solvents for pretreating wheat straw to facilitate enzymatic hydrolysis." Bioresource technology 245 (2017): 625-632.https://doi.org/10.1016/j.biortech.2017.08.209 17. 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 18. [IF=6.079] Tian Luo et al."Determination of underivatized amino acids to evaluate quality of beer by capillary electrophoresis with online sweeping technique."J Food Drug Anal. 2017 Oct;25:789 19. 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白色结晶粉末,无臭,有特殊甜味,甜度约为蔗糖的70%。200℃以上升华。易溶于水(17%,25℃),微溶于乙醇(0.2%,80%冷酒精).不溶于乙醚。5%水溶液pH值5.5—5.7。化学性能稳定。
主要以L-天冬氨酸为原料,经脱羧、杀酶、脱色、过滤、结晶、离心、洗涤、干燥得成品。
用作增味剂。可增加调味品的调味效果;还可用作酸味矫正剂,改善有机酸的酸味。
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