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Urushiol oligomer preparation and evaluations of their antibacterial, antioxidant, and thermal stability.

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Title: Urushiol oligomer preparation and evaluations of their antibacterial, antioxidant, and thermal stability.
Authors: Chen, Hongxia1,2,3,4 (AUTHOR) shirenyahui@126.com, Zhou, Hao1,2,3,4 (AUTHOR), Qi, Zhiwen1,2,3,4 (AUTHOR), Xue, Xingying1,2,3,4 (AUTHOR), Wang, Chengzhang1,2,3,4 (AUTHOR) wangczlhs@sina.com
Source: Journal of Biomaterials Science -- Polymer Edition. Mar2025, Vol. 36 Issue 4, p481-494. 14p.
Subjects: Normal-phase chromatography, Thermal stability, Staphylococcus epidermidis, Degree of polymerization, Protective coatings
Abstract: There have been studies published on the composition and coating uses of raw lacquers following enzymatic oxidative polymerization. The change of urushiol' thermal stability and biological activity following polymerization to create oligomer, however, has received little attention. This work using silica gel column chromatography to separate urushiol and urushiol oligomer from polymerized raw lacquer and assessed its antibacterial, antioxidant, and thermal stability in an effort to decrease the allergenicity of urushiol and increase its application. By using gel chromatography, the urushiol oligomer were discovered to be polymers with 2–5 degrees of polymerization. According to characterization results from techniques like UV, FT-IR, and 1H NMR, urushiol was converted into urushiol oligomer by addition reactions, and C–C coupling. The findings demonstrated that the urushiol oligomer' IC50 values for scavenging DPPH and ABTS free radicals were 40.8 and 27.4 μg/mL, respectively, and that their minimum inhibitory concentrations against Staphylococcus aureus and Staphylococcus epidermidis were 250 and 125 μg/mL. The urushiol oligomer's thermogravimetric differential curve peak temperature (461.8 °C) was higher than urushiol's (239.5 °C), indicating that urushiol undergoes polymerization with enhanced thermal stability. The study's findings establish a foundation for the use of polymerized urushiol and urushiol oligomer in applications including functional materials and additives. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Biomaterials Science -- Polymer Edition is the property of Taylor & Francis Ltd 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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Items – Name: Title
  Label: Title
  Group: Ti
  Data: Urushiol oligomer preparation and evaluations of their antibacterial, antioxidant, and thermal stability.
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  Data: <searchLink fieldCode="AR" term="%22Chen%2C+Hongxia%22">Chen, Hongxia</searchLink><relatesTo>1,2,3,4</relatesTo> (AUTHOR)<i> shirenyahui@126.com</i><br /><searchLink fieldCode="AR" term="%22Zhou%2C+Hao%22">Zhou, Hao</searchLink><relatesTo>1,2,3,4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Qi%2C+Zhiwen%22">Qi, Zhiwen</searchLink><relatesTo>1,2,3,4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Xue%2C+Xingying%22">Xue, Xingying</searchLink><relatesTo>1,2,3,4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Chengzhang%22">Wang, Chengzhang</searchLink><relatesTo>1,2,3,4</relatesTo> (AUTHOR)<i> wangczlhs@sina.com</i>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Biomaterials+Science+--+Polymer+Edition%22">Journal of Biomaterials Science -- Polymer Edition</searchLink>. Mar2025, Vol. 36 Issue 4, p481-494. 14p.
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  Data: <searchLink fieldCode="DE" term="%22Normal-phase+chromatography%22">Normal-phase chromatography</searchLink><br /><searchLink fieldCode="DE" term="%22Thermal+stability%22">Thermal stability</searchLink><br /><searchLink fieldCode="DE" term="%22Staphylococcus+epidermidis%22">Staphylococcus epidermidis</searchLink><br /><searchLink fieldCode="DE" term="%22Degree+of+polymerization%22">Degree of polymerization</searchLink><br /><searchLink fieldCode="DE" term="%22Protective+coatings%22">Protective coatings</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: There have been studies published on the composition and coating uses of raw lacquers following enzymatic oxidative polymerization. The change of urushiol' thermal stability and biological activity following polymerization to create oligomer, however, has received little attention. This work using silica gel column chromatography to separate urushiol and urushiol oligomer from polymerized raw lacquer and assessed its antibacterial, antioxidant, and thermal stability in an effort to decrease the allergenicity of urushiol and increase its application. By using gel chromatography, the urushiol oligomer were discovered to be polymers with 2–5 degrees of polymerization. According to characterization results from techniques like UV, FT-IR, and 1H NMR, urushiol was converted into urushiol oligomer by addition reactions, and C–C coupling. The findings demonstrated that the urushiol oligomer' IC50 values for scavenging DPPH and ABTS free radicals were 40.8 and 27.4 μg/mL, respectively, and that their minimum inhibitory concentrations against Staphylococcus aureus and Staphylococcus epidermidis were 250 and 125 μg/mL. The urushiol oligomer's thermogravimetric differential curve peak temperature (461.8 °C) was higher than urushiol's (239.5 °C), indicating that urushiol undergoes polymerization with enhanced thermal stability. The study's findings establish a foundation for the use of polymerized urushiol and urushiol oligomer in applications including functional materials and additives. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Biomaterials Science -- Polymer Edition is the property of Taylor & Francis Ltd 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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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1080/09205063.2024.2409483
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 14
        StartPage: 481
    Subjects:
      – SubjectFull: Normal-phase chromatography
        Type: general
      – SubjectFull: Thermal stability
        Type: general
      – SubjectFull: Staphylococcus epidermidis
        Type: general
      – SubjectFull: Degree of polymerization
        Type: general
      – SubjectFull: Protective coatings
        Type: general
    Titles:
      – TitleFull: Urushiol oligomer preparation and evaluations of their antibacterial, antioxidant, and thermal stability.
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      – PersonEntity:
          Name:
            NameFull: Chen, Hongxia
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            NameFull: Zhou, Hao
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            NameFull: Qi, Zhiwen
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            NameFull: Xue, Xingying
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            NameFull: Wang, Chengzhang
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            – D: 01
              M: 03
              Text: Mar2025
              Type: published
              Y: 2025
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              Value: 36
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            – TitleFull: Journal of Biomaterials Science -- Polymer Edition
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