Phase Transformations of Glutamic Acid and Its Decomposition Products

Wu H; Reeves-McLaren N; Jones S; Ristic RI; Fairclough JPA; West AR

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Phase Transformations of Glutamic Acid and Its Decomposition Products

机译：谷氨酸及其分解产物的相变

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The thermal behavior and phase transformations of the alpha and beta polymorphs of L-glutamic acid were studied by differential scanning calorimetry, thermogravimetry, powder X-ray diffraction, gel permeation chromatography, and mass spectrometry. Solid-state transformation of alpha to beta polymorph was observed at temperatures above 140 degrees C, together with, in sequence, cyclization to pyroglutamic acid and polymerization to polyglutamic acid. The resulting polyglutamic acid is a high molecular weight amorphous polymer, with a glass transition temperature at similar to 20 degrees C.

机译：通过差示扫描量热法，热重分析法，粉末X射线衍射法，凝胶渗透色谱法和质谱法研究了L-谷氨酸的α和β多晶型物的热行为和相变。在高于140摄氏度的温度下，观察到从α到β多晶型物的固态转化，依次是环化为焦谷氨酸和聚合为聚谷氨酸。所得的聚谷氨酸是高分子量的无定形聚合物，其玻璃化转变温度类似于20℃。

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《Crystal growth & design》 |2010年第2期|共7页
作者
Wu H; Reeves-McLaren N; Jones S; Ristic RI; Fairclough JPA; West AR;
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正文语种 eng
中图分类晶体学;
关键词
AMINO-ACIDS; THERMAL POLYMERIZATION; POLYMORPHIC TRANSFORMATION; PARKINSONS-DISEASE; COPOLYMERIZATION; PEPTIDES; PROTEIN; SODIUM;

机译：氨基酸;热聚合;多态性转变;帕金森病;共聚;肽;蛋白质;钠;

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1. Phase Transformations of Glutamic Acid and Its Decomposition Products [J] . Wu H, Reeves-McLaren N, Jones S, Crystal growth & design . 2010,第2期

机译：谷氨酸及其分解产物的相变
2. Kinetic study of decomposition of peroxypropionic acid in liquid phase through direct analysis of decomposition products in gas phase [J] . Leveneur S, Salmi T, Musakka N, Chemical Engineering Science . 2007,第18a20期

机译：通过直接分析气相中分解产物的动力学研究过氧丙酸在液相中的分解动力学
3. Phase transformation of calcium phosphates in the presence of glutamic acid [J] . Tim W. T. Tsai, Wei-Ya Chen, Yao-Hung Tseng Canadian Journal of Chemistry . 2011,第7期

机译：谷氨酸存在下磷酸钙的相变
4. IN-SITU MONITORING AND MODELING OF SOLVENT MEDIATED POLYMORPHIC TRANSFORMATIONS OF L-GLUTAMIC ACID [C] . J. Scholl, D. Bonalumi, L. Vicum, International Symposium on Industrial Crystallization . 2005

机译：溶剂介导的L-谷氨酸多态性转化的原位监测与建模
5. Mixing and mass transfer studies of the fermentation product (poly)-gamma-glutamic acid. [D] . Stock, Louis Richard, II. 2000

机译：发酵产物（聚）-γ-谷氨酸的混合和传质研究。
6. Thermal decomposition of the amino acids glycine cysteine aspartic acid asparagine glutamic acid glutamine arginine and histidine [O] . Ingrid M. Weiss, Christina Muth, Robert Drumm, 2018

机译：氨基酸甘氨酸半胱氨酸天冬氨酸天冬酰胺谷氨酸谷氨酰胺精氨酸和组氨酸的热分解
7. Thermal decomposition of the amino acids glycine, cysteine, aspartic acid, asparagine, glutamic acid, glutamine, arginine and histidine [O] . Ingrid M. Weiss, Christina Muth, Robert Drumm, 2018

机译：氨基酸甘氨酸的热分解，半胱氨酸，天冬氨酸，天冬酰胺，谷氨酸，谷氨酰胺，精氨酸和组氨酸

Phase Transformations of Glutamic Acid and Its Decomposition Products

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