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Extraction: Advanced Methods00:56

Extraction: Advanced Methods

436
Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is...
436

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相关实验视频

Updated: Jun 18, 2025

Ultrafast Lignin Extraction from Unusual Mediterranean Lignocellulosic Residues
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基于聚醇的不同深层浸泡溶剂的比较效率,用于从龙中提取基.

Honglin Zhu1, Sunni Chen1, Tiangang Yang2

  • 1Nanotechnology and Biodelivery Laboratory, Department of Nutritional Sciences, University of Connecticut, Storrs, CT 06269-4017, United States.

International journal of biological macromolecules
|August 3, 2024
PubMed
概括

深度浸泡溶剂 (DES) 有效地从龙中提取素. 胆酸-乳酸/糖醇 (CCLaGly) 显示出优异的性能,产生与化学方法相比的纯基.

关键词:
基酸是一种深度欧性溶剂是一种溶剂.龙的贝是一个龙的贝.物理化学特性 物理化学特性聚合物聚合物 聚合物聚合物

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Last Updated: Jun 18, 2025

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科学领域:

  • 生物材料科学 生物材料科学
  • 绿色化学 绿色化学
  • 可持续的资源利用 可持续的资源利用

背景情况:

  • 素是一种有价值的生物聚合物,在类贝中很丰富.
  • 传统的酸盐提取方法通常涉及强化学品并产生废物.
  • 深度浸泡溶剂 (DES) 为生物聚合物提取提供了一个有前途的环保替代品.

研究的目的:

  • 为了比较各种深溶解溶剂 (DES) 在从龙贝中提取基的有效性.
  • 调查聚醇结构对DES特性和基提取效率的影响.
  • 为了描述DES提取的基的物理化学特性.

主要方法:

  • 制备和描述基于胆化物,乳酸和不同多聚醇 (乙烯基醇,甘,利醇,利醇) 的四种DES.
  • 使用准备好的DESs从龙贝中提取基.
  • 提取的基的纯度,结晶度和分子量分析.
  • 使用FTIR,XRD,TGA和SEM进行物理化学表征.

主要成果:

  • 聚醇中基的增加导致了更密集的DES键网络,但也导致了更高的粘度,影响了提取效率.
  • 胆化物-乳酸/糖醇 (CCLaGly) 显示出最高的提取能力,产生纯基.
  • 通过DES提取的基的纯度 (94.76%),结晶度 (78.78%) 和分子量 (655kDa) 与化学分离的基相当.

结论:

  • 选择的多聚显著影响DES粘度和基提取性能.
  • CCLaGly是一种高效的DES,用于从龙中提取纯基.
  • 这项研究强调了一种可持续和高效的酸盐提取和类废物的利用方法.