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Structurally Intelligent Recognition and Enrichment of Photo‐Responsive Dual‐Monomer Imprinted Polymers for β‐Sitosterol in Camellia Oil.

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Title: Structurally Intelligent Recognition and Enrichment of Photo‐Responsive Dual‐Monomer Imprinted Polymers for β‐Sitosterol in Camellia Oil.
Authors: Chen, Yuling1 (AUTHOR), Tian, Yunong1 (AUTHOR), Ouyang, Jiahao1 (AUTHOR), He, Xuan2 (AUTHOR), Wang, Bo3 (AUTHOR), Li, Dandan4 (AUTHOR), Ye, Yong1,4 (AUTHOR) yeyong@scut.edu.cn
Source: Polymer Engineering & Science. Feb2026, Vol. 66 Issue 2, p1007-1024. 18p.
Subjects: Imprinted polymers, Phytosterols, Adsorption capacity, Extraction techniques, Green technology, Photosensitivity, Monomers, Camellia oleifera
Abstract: To address the challenge of selectively extracting β‐sitosterol from Camellia oil—a complex, lipid‐rich matrix containing structurally similar sterols—a photo‐responsive molecularly imprinted polymer (MIP) was developed using a hybrid functional monomer system. Functional monomers were systematically screened via UV–Vis spectroscopy and density functional theory (DFT) to ensure molecular‐level selectivity and optimal cavity matching. The imprinting system combined methacrylic acid (MAA) with either acrylamide (AAm) or 3‐aminopropyltriethoxysilane (APTES), introducing synergistic hydrogen bonding and π‐π stacking. A photo‐responsive azobenzene monomer enabled reversible photo‐isomerization under 365/440 nm light, allowing precise spatiotemporal control of β‐sitosterol adsorption/release. Co‐assembly behavior was validated by 1H‐NMR spectroscopy. The MIPs were characterized by FT‐IR, XPS, TGA, SEM, BET, DSC and UV‐DRS, while molecular docking elucidated the photo‐responsive mechanism. Adsorption performance was evaluated using isothermal, kinetic, and thermodynamic models, alongside imprinting factor analysis. When applied to solid‐phase extraction (SPE) from crude Camellia oil, the MIPs exhibited excellent selectivity, reusability, and enrichment efficiency. The maximum adsorption capacity reached 11.02 mg/g, and β‐sitosterol purity increased to 78.3% ~ 82.1%. This work offers a green, reusable, and light‐controllable platform for selective sterol recovery from edible oil systems. [ABSTRACT FROM AUTHOR]
Copyright of Polymer Engineering & Science is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Structurally Intelligent Recognition and Enrichment of Photo‐Responsive Dual‐Monomer Imprinted Polymers for β‐Sitosterol in Camellia Oil.
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  Data: <searchLink fieldCode="AR" term="%22Chen%2C+Yuling%22">Chen, Yuling</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Tian%2C+Yunong%22">Tian, Yunong</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ouyang%2C+Jiahao%22">Ouyang, Jiahao</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22He%2C+Xuan%22">He, Xuan</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Bo%22">Wang, Bo</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Li%2C+Dandan%22">Li, Dandan</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ye%2C+Yong%22">Ye, Yong</searchLink><relatesTo>1,4</relatesTo> (AUTHOR)<i> yeyong@scut.edu.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22Polymer+Engineering+%26+Science%22">Polymer Engineering & Science</searchLink>. Feb2026, Vol. 66 Issue 2, p1007-1024. 18p.
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  Data: <searchLink fieldCode="DE" term="%22Imprinted+polymers%22">Imprinted polymers</searchLink><br /><searchLink fieldCode="DE" term="%22Phytosterols%22">Phytosterols</searchLink><br /><searchLink fieldCode="DE" term="%22Adsorption+capacity%22">Adsorption capacity</searchLink><br /><searchLink fieldCode="DE" term="%22Extraction+techniques%22">Extraction techniques</searchLink><br /><searchLink fieldCode="DE" term="%22Green+technology%22">Green technology</searchLink><br /><searchLink fieldCode="DE" term="%22Photosensitivity%22">Photosensitivity</searchLink><br /><searchLink fieldCode="DE" term="%22Monomers%22">Monomers</searchLink><br /><searchLink fieldCode="DE" term="%22Camellia+oleifera%22">Camellia oleifera</searchLink>
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  Data: To address the challenge of selectively extracting β‐sitosterol from Camellia oil—a complex, lipid‐rich matrix containing structurally similar sterols—a photo‐responsive molecularly imprinted polymer (MIP) was developed using a hybrid functional monomer system. Functional monomers were systematically screened via UV–Vis spectroscopy and density functional theory (DFT) to ensure molecular‐level selectivity and optimal cavity matching. The imprinting system combined methacrylic acid (MAA) with either acrylamide (AAm) or 3‐aminopropyltriethoxysilane (APTES), introducing synergistic hydrogen bonding and π‐π stacking. A photo‐responsive azobenzene monomer enabled reversible photo‐isomerization under 365/440 nm light, allowing precise spatiotemporal control of β‐sitosterol adsorption/release. Co‐assembly behavior was validated by 1H‐NMR spectroscopy. The MIPs were characterized by FT‐IR, XPS, TGA, SEM, BET, DSC and UV‐DRS, while molecular docking elucidated the photo‐responsive mechanism. Adsorption performance was evaluated using isothermal, kinetic, and thermodynamic models, alongside imprinting factor analysis. When applied to solid‐phase extraction (SPE) from crude Camellia oil, the MIPs exhibited excellent selectivity, reusability, and enrichment efficiency. The maximum adsorption capacity reached 11.02 mg/g, and β‐sitosterol purity increased to 78.3% ~ 82.1%. This work offers a green, reusable, and light‐controllable platform for selective sterol recovery from edible oil systems. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Polymer Engineering & Science is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1002/pen.70256
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      – Code: eng
        Text: English
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        PageCount: 18
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        Type: general
      – SubjectFull: Phytosterols
        Type: general
      – SubjectFull: Adsorption capacity
        Type: general
      – SubjectFull: Extraction techniques
        Type: general
      – SubjectFull: Green technology
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      – SubjectFull: Photosensitivity
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      – SubjectFull: Monomers
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      – SubjectFull: Camellia oleifera
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      – TitleFull: Structurally Intelligent Recognition and Enrichment of Photo‐Responsive Dual‐Monomer Imprinted Polymers for β‐Sitosterol in Camellia Oil.
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            NameFull: Chen, Yuling
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              M: 02
              Text: Feb2026
              Type: published
              Y: 2026
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