Fabrication of a monolithic adsorbent with multi-sites and its application in the extraction of active components from traditional Chinese medicine formula

Functionalized monolithic columns: Recent advancements and their applications for high-efficiency separation and enrichment in food and medicine

“…In addition, SPE is also one of the commonly used methods, but its use is also affected by the limited stability of the adsorbent and poor reusability. Consequently, monolithic columns that can be used for trace and structural analysis have been prepared by modifying adsorbents and combining HPLC, MS, and diode array detection (Sun et al, 2021). The Chinese medicine Schisandra has antioxidant, detoxification, anticancer and anti-fatigue properties (Wang et al, 2012; developed a biochromatographic column using immobilized liposomes as a membrane model, and separated more than 40 components of Schisandra chinensis using a 2D chromatography system (shown in Figure 8), and preliminarily established a three-dimensional chromatographic fingerprint of Schisandra chinensis.…”

β‐Ketoenamine‐linked covalent organic framework absorbent for online micro‐solid phase extraction of trace levels bisphenols in plastic samples

“…Compared with the conventional offline extraction techniques, it is a great advance from offline to online coupling mode of sample preparation and chromatography technique with obvious advantages such as less sample loss, time consumption, and labor which would result in the great improvement of analytical precision and accuracy [18], especially when facing a large number of complex samples like food [11,19], environmental [20] and medicine [21] samples. Recent studies in the online analysis have been focused on the combination with the micro-SPE (μ-SPE) technique to gain high extraction efficiency and overcome limitations raised from conventional methods.…”