J. Mater. Sci. Technol. ›› 2025, Vol. 211: 159-170.DOI: 10.1016/j.jmst.2024.06.001

• Research Article • Previous Articles     Next Articles

Convenient and highly efficient adsorption of diosmetin from lemon peel by magnetic surface molecularly imprinted polymers

Dongliang Xiea,1, Yi Kuanga,1, Bingnan Yuana, Yunlong Zhanga, Chenyu Yea, Yuyi Guoa, Hua Qiub, Juanna Renc,d, Saud O. Alshammarie, Qamar A. Alshammarif,g, Zeinhom M. El-Bahyh, Kui Zhaod,*, Zhanhu Guod,*, Qingqing Raoa,*, Shengxiang Yanga,*   

  1. aCollege of Chemical and Materials Engineering, Zhejiang A&F University, Lin’an 311300, China;
    bShaanxi Key Laboratory of Macromolecular Science and Technology, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi’an 710072, China;
    cCollege of Materials Science and Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, China;
    dDepartment of Mechanical and Construction Engineering, Northumbria University, Newcastle Upon Tyne, NE1 8ST, UK;
    eDepartment of Pharmacognosy and Alternative Medicine, College of Pharmacy, Northern Border University, Rafha 76321, Saudi Arabia;
    fDepartment of Pharmacology and Toxicology, College of Pharmacy, Northern Border University, Rafha, Saudi Arabia;
    gCenter for Health Research, Northern Border University, Arar, Saudi Arabia h Department of Chemistry, Faculty of Science, Al-Azhar University, Nasr City, Cairo, 11884, Egypt
  • Received:2024-05-08 Revised:2024-06-09 Accepted:2024-06-10 Published:2025-03-10 Online:2024-06-19
  • Contact: * E-mail addresses: zhao10028tcm@126.com (K. Zhao), zhanhu.guo@northumbria.ac.uk (Z. Guo), qqrao@zafu.edu.cn (Q. Rao), shengxiangyang2000@163.com (S. Yang).
  • About author:1 These authors contributed equally to this paper.

Abstract: As a typical bioflavonoid, diosmetin is desirable in the field of natural medicine, healthy food, and cosmetics by anti-cancer, antibacterial, antioxidant, estrogen-like and anti-inflammatory activities, and it comes from a wide range of sources in traditional Chinese medicine like spider fragrance, spearmint and chrysanthemum, as well as in Citrus fruit. However, traditional analytical methods such as silica gel column chromatography face multiple challenges in the selective extraction of diosmetin from biological materials and traditional Chinese medicinal materials. Therefore, it is urgent to develop a new type of absorbent with high efficiency, recyclability and good specificity to diosmetin. In this investigation, a magnetic surface molecularly imprinted polymer (labeled as Diosmetin/SMIPs) was synthesized employing magnetic nanoparticles as the carrier and 4-vinylpyridinyl (4-VP) as the functional monomer by surface imprinting technology. The functional monomer was screened by the binding energy (ΔE) between functional monomers and template molecules via computational simulation. The Diosmetin/SMIPs had a high level of specific recognition and adsorption capability towards diosmetin with a 20.25 mg g-1 adsorption capacity and an imprinting factor (IF) of 2.28. Additionally, it demonstrated excellent regeneration performance with 8 adsorption/desorption cycles. In addition, 91.20 %-94.16 % of spiked diosmetin was recovered from the lemon peel samples. The strategy of constructing Diosmetin/SMIPs based on computational simulation can effectively enhance the specific adsorption performance of diosmetin. Meanwhile, Diosmetin/SMIPs synthesized by imprinting polymerization showed excellent anti-interference and reusability, and realized efficient targeted extraction of diosmetin from lemon peel samples. The results of this investigation provide a promising adsorbent for selective enrichment of diosmetin from Citrus fruit and complicated materials.

Key words: Diosmetin, Selective extraction, Magnetic molecularly imprinted polymer, Lemon peel