在工业乳二烯净化过程中,以阿加为基础的色谱的列老化
Manuella Cazelato Pires1, Alois Jungbauer2, Darren Lau3
1The University of Adelaide, School of Chemical Engineering 5000, Adelaide, Australia.
Journal of chromatography. A
|August 16, 2025
概括
商业色谱树脂由于清洁剂而降解,而不是污染. 这种对阿加珠的结构损伤增加了反压力,并需要更换柱子,影响了乳酸净化效率.
科学领域:
- 生物化学 生物化学
- 化学工程是化学工程的重要组成部分.
- 材料科学 材料科学 材料科学
背景情况:
- 商业上使用的乳酸净化使用基于阿加洛斯的Sepharose SP大珠用于阴离子交换染色学.
- 长时间使用后,由于超过操作逆压限,柱子需要更换.
研究的目的:
- 为了调查用于乳酸净化所用的基于阿加的染色体列中增加的逆压的原因.
- 为了阐明阿加罗斯珠在运行周期中的结构和化学变化.
主要方法:
- 扫描电子显微镜 (SEM) 用于可视化珠子结构.
- 分析颗粒大小,毛孔大小和多孔性.
- 福利埃变换红外 (FTIR) 和拉曼光谱仪用于化学分析.
- 结合能力的评估 (平衡,离子,动态).
- 将新鲜珠子暴露在清洁剂中以复制降解.
主要成果:
- 增加的逆压是由于珠的结构降解和骨干枯竭造成的,而不是污染.
- SEM显示了粒子大小和毛孔大小的减少,同时增加了内部多孔性.
- 离子容量下降了23%,而动态结合能力由于增强的质量转移而增加了31%.
- FTIR和拉曼光谱证实了亚加结构的化学变化,与清洁剂的降解相一致.
结论:
- 清洁在位 (CIP) 处理,而不是牛奶成分,随着时间的推移降解了阿加罗斯骨干.
- 降解导致机械削弱,带损失和最终的柱子故障.
- 了解这种降解机制对于优化色谱树脂寿命和净化过程至关重要.
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