Constructing molecularly imprinted membranes with instant noodles-like structure for selectively separating acteoside

Area of Science:

• Materials Science
• Separation Science
• Biotechnology

Background:

• Acteoside (ACT) is a key bioactive compound in Cistanche tubulosa, necessitating efficient separation methods.
• Existing separation techniques for ACT often lack selectivity and efficiency.
• Developing advanced materials for selective bioactive compound extraction is a significant challenge.

Purpose of the Study:

• To synthesize yolk-shell magnetic mesoporous carbon (YSMMC) as a nanofiller.
• To create molecularly imprinted membranes (ACT-MIMs) with an 'instant noodle-like' structure for selective ACT separation.
• To evaluate the performance of the developed ACT-MIMs in terms of selectivity, permselectivity, and rebinding capacity.

Main Methods:

• Synthesis of YSMMC with dendritic shell and interlayer cavity structure.
• Fabrication of ACT-MIMs incorporating YSMMC via magnetic guidance.
• Characterization of the 'instant noodle-like' structure and its impact on membrane properties.
• Assessing ACT separation performance using permselectivity, selectivity, and rebinding capacity metrics.

Main Results:

• The YSMMC nanofiller facilitated the formation of an 'instant noodle-like' structure within the ACT-MIMs.
• This structure enhanced surface roughness, improving the effective imprinted interface and ACT selectivity.
• Dendritic interleaved pathways in the membranes improved permselectivity and ACT interception.
• The ACT-MIMs achieved high permselectivity (14.49), selectivity (7.52), and rebinding capacity (120.48 mg/g).

Conclusions:

• The 'instant noodle-like' structure in ACT-MIMs, enabled by YSMMC, significantly enhances selective ACT separation.
• This novel membrane design offers a promising approach for isolating bioactive components from complex mixtures.
• The developed YSMMC-based ACT-MIMs demonstrate high efficiency and capacity for ACT purification.