2019
DOI: 10.1002/app.47683
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Effect of different initiators on temperature‐sensitive monolithic columns and application in online enrichment of β‐sitosterol

Abstract: Three temperature‐sensitive monolithic columns were prepared by atom transfer radical polymerization and oxidation–reduction method using the initiator systems of CCl4/FeCl2, BPO/DMA, and APS/TEMED, respectively. The three monoliths were characterized by scanning electron microscopy, nitrogen adsorption, and thermogravimetric analysis. The obtained monolithic columns were used as on‐line solid phase extraction sorbent coupled with high‐performance liquid chromatography for the enrichment of β‐sitosterol. By co… Show more

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(1 citation statement)
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“…For instance, ß-sitosterol in plant oil samples has significant antiinflammatory and antitumor effects, but it is difficult to detect. A new monolithic column was prepared and a new method was developed for online enrichment and determination of ßsitosterol in plant oil samples by online SPE combined with HPLC (Guo et al, 2019;. Phenolic acids have excellent antioxidant activity.…”
Section: Determination Of Active Ingredientsmentioning
confidence: 99%
“…For instance, ß-sitosterol in plant oil samples has significant antiinflammatory and antitumor effects, but it is difficult to detect. A new monolithic column was prepared and a new method was developed for online enrichment and determination of ßsitosterol in plant oil samples by online SPE combined with HPLC (Guo et al, 2019;. Phenolic acids have excellent antioxidant activity.…”
Section: Determination Of Active Ingredientsmentioning
confidence: 99%