Constructing a Broad-Pore-Domain Structure of Adsorbents for Acteoside Adsorption

Area of Science:

• Materials Science
• Natural Product Chemistry
• Separation Science

Background:

• Acteoside (ACT) is a valuable medicinal compound found in plants like Cistanche tubulosa.
• The scarcity of ACT necessitates efficient purification methods to meet medicinal demands.
• Current purification techniques may lack the capacity or selectivity for optimal ACT recovery.

Purpose of the Study:

• To synthesize and characterize a novel broad-pore-domain hyper-crosslinked polymer (BHP-Kae) for ACT adsorption.
• To evaluate the adsorption capacity and selectivity of BHP-Kae for ACT purification from Cistanche tubulosa.
• To demonstrate the potential of broad-pore-domain adsorbents in natural product separation.

Main Methods:

• Preparation of a broad-pore-domain hyper-crosslinked polymer (BHP-Kae-3).
• Adsorption experiments using BHP-Kae-3 to purify ACT from Cistanche tubulosa extract.
• Characterization of the adsorbent's structure, surface, and pore properties.
• Quantification of ACT adsorption capacity and selectivity.

Main Results:

• BHP-Kae-3 exhibited a unique broad-pore-domain structure facilitating rapid ACT diffusion.
• Abundant functional groups (-OH, C=O) on BHP-Kae-3 provided numerous adsorption sites.
• The adsorbent achieved a high ACT adsorption capacity of 105.12 mg/g.
• A selectivity value of 3.41 was recorded, indicating efficient ACT separation.

Conclusions:

• Broad-pore-domain hyper-crosslinked polymers are effective adsorbents for ACT purification.
• The structural and chemical properties of BHP-Kae-3 enhance ACT adsorption efficiency and selectivity.
• This adsorbent technology holds promise for the efficient separation of valuable natural products.