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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...
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从Zingiber officinale中提取油脂,使用热压缩水提取.

Syahrul Affandi Saidi1, Mohd Al Hafiz Mohd Nawi2, Nik Muhammad Azhar Nik Daud3

  • 1Faculty of Electrical Engineering Technology, Universiti Malaysia Perlis (UniMAP), 02600 Arau, Perlis, MALAYSIA.

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热压缩水提取 (HCWE) 为生提取物生产提供了更快,无溶剂的替代方案. 这种绿色方法显著减少了加工时间,同时使生物活性化合物具有温度控制的选择性.

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6 - 生醇的使用情况6-shogaol是什么意思? 6-shogaol是什么意思?绿色工艺是一个绿色的过程.油脂类似的提取物.有选择性的提取.

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科学领域:

  • 食品科学与技术 食品科学与技术
  • 植物化学 植物化学
  • 绿色化学 绿色化学

背景情况:

  • 传统的生提取方法,如溶剂提取和水蒸,具有局限性,包括使用有机溶剂,加工时间长,选择性差.
  • 需要有效,可持续和选择性提取生物活性化合物的技术,用于功能性食品应用.

研究的目的:

  • 评估热压缩水提取 (HCWE) 作为生提取的替代方法.
  • 为了比较HCWE与常规溶剂提取的性能,在产量,物理特性和关键生物活性化合物度方面 (6-gingerol,6-shogaol,10-gingerol).

主要方法:

  • 热压缩水提取 (HCWE) 在3.5MPa和130°C至200°C的温度下进行.
  • 传统的溶剂提取被用作基准.
  • 使用高性能液体染色学 (HPLC) 来量化提取物中的生醇和醇异构体.

主要成果:

  • 140°C的HCWE在较短时间 (30分钟) 中产生了显著更多的提取物 (10.37%) 与溶剂提取 (7.57%在480分钟) 相比.
  • HCWE证明了温度依赖的选择性:170°C有利于6-shogaol (1135.23μg/g) 而不是6-gingerol (851.95μg/g),而较低的温度产生了更多的6-gingerol.
  • 高温 (>170°C) 导致生物活性化合物的显著降解,降低了提取品质.

结论:

  • HCWE是一种快速的,无有机溶剂的生提取方法,与溶剂提取相比,它将加工时间减少80%以上.
  • 该过程为特定的生生物活性化合物提供可调节的,温度驱动的选择性.
  • 作为一个可持续和高效的工业规模植物化学提取和功能性食品成分生产技术,HCWE显示出巨大的潜力.