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Flaxseed‐Derived Rhamnogalacturonan as a Biogenic Stabilizer for CuO Nanoparticles With Photocatalytic, Antimicrobial, and Pollutant‐Sensing Applications.

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Title: Flaxseed‐Derived Rhamnogalacturonan as a Biogenic Stabilizer for CuO Nanoparticles With Photocatalytic, Antimicrobial, and Pollutant‐Sensing Applications.
Authors: Zulfiqar, Zarfishan1 (AUTHOR), Fatima, Zain1 (AUTHOR), Azeeqa, Nimrim2 (AUTHOR), Iram, Fozia3 (AUTHOR), Ahmad, Imran4 (AUTHOR), Wajid, Muhammad5 (AUTHOR) drwajid.rims1986@gmail.com, Majeed, Aamna1 (AUTHOR), Qaiser, Muhammad Naeem6 (AUTHOR), Muhammad, Gulzar1 (AUTHOR) mgulzar@gcu.edu.pk
Source: Environmental Quality Management. Spring2026, Vol. 35 Issue 3, p1-16. 16p.
Subject Terms: *Sustainable chemistry, *Pollution monitoring, *Environmental remediation, Copper oxide, Flaxseed, Anti-infective agents, Photocatalysts, Polysaccharides
Abstract: The study presents the green synthesis of copper oxide nanoparticles (CuO NPs) using the rhamnogalacturonan‐rich mucilage from flaxseed (Linum usitatissimum) as a natural stabilizing agent. The CuO NPs were characterized using spectroscopic techniques, including UV‐Visible spectroscopy, FTIR, SEM, and XRD. The UV analysis revealed a sharp band at 294 nm with an energy band gap of 4.27 eV; hence, the prepared CuO NPs are semiconductor materials. FTIR spectrum revealed an intense peak at 590 cm−1, attributed to Cu‐O bonds. SEM analysis discovered that the CuO NPs were non‐spherical, polydispersed, and agglomerated. The XRD analysis showed a monoclinic crystal structure with crystallite sizes of 11–31 nm. The photocatalytic activity of CuO NPs was responsible for the decomposition of 87.2% methylene blue (MB) in sunlight following pseudo‐first‐order (k = 0.01708 min−1) kinetics. The CuO NPs depicted significant antimicrobial activity and complete biofilm inhibition at 100 µg/mL against Bacillus licheniformis, Escherichia coli, and Pseudomonas aeruginosa. In addition, CuO NPs acted as sensors for heavy metal ions such as Pb2+ and Fe2+. The study suggests the potential of rhamnogalacturonan‐capped CuO NPs for successful use in antibacterial applications, environmental remediation, and pollutant detection. [ABSTRACT FROM AUTHOR]
Copyright of Environmental Quality Management 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: Flaxseed‐Derived Rhamnogalacturonan as a Biogenic Stabilizer for CuO Nanoparticles With Photocatalytic, Antimicrobial, and Pollutant‐Sensing Applications.
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  Data: <searchLink fieldCode="AR" term="%22Zulfiqar%2C+Zarfishan%22">Zulfiqar, Zarfishan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Fatima%2C+Zain%22">Fatima, Zain</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Azeeqa%2C+Nimrim%22">Azeeqa, Nimrim</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Iram%2C+Fozia%22">Iram, Fozia</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ahmad%2C+Imran%22">Ahmad, Imran</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wajid%2C+Muhammad%22">Wajid, Muhammad</searchLink><relatesTo>5</relatesTo> (AUTHOR)<i> drwajid.rims1986@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Majeed%2C+Aamna%22">Majeed, Aamna</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Qaiser%2C+Muhammad+Naeem%22">Qaiser, Muhammad Naeem</searchLink><relatesTo>6</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Muhammad%2C+Gulzar%22">Muhammad, Gulzar</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> mgulzar@gcu.edu.pk</i>
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  Data: <searchLink fieldCode="JN" term="%22Environmental+Quality+Management%22">Environmental Quality Management</searchLink>. Spring2026, Vol. 35 Issue 3, p1-16. 16p.
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  Data: *<searchLink fieldCode="DE" term="%22Sustainable+chemistry%22">Sustainable chemistry</searchLink><br />*<searchLink fieldCode="DE" term="%22Pollution+monitoring%22">Pollution monitoring</searchLink><br />*<searchLink fieldCode="DE" term="%22Environmental+remediation%22">Environmental remediation</searchLink><br /><searchLink fieldCode="DE" term="%22Copper+oxide%22">Copper oxide</searchLink><br /><searchLink fieldCode="DE" term="%22Flaxseed%22">Flaxseed</searchLink><br /><searchLink fieldCode="DE" term="%22Anti-infective+agents%22">Anti-infective agents</searchLink><br /><searchLink fieldCode="DE" term="%22Photocatalysts%22">Photocatalysts</searchLink><br /><searchLink fieldCode="DE" term="%22Polysaccharides%22">Polysaccharides</searchLink>
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  Data: The study presents the green synthesis of copper oxide nanoparticles (CuO NPs) using the rhamnogalacturonan‐rich mucilage from flaxseed (Linum usitatissimum) as a natural stabilizing agent. The CuO NPs were characterized using spectroscopic techniques, including UV‐Visible spectroscopy, FTIR, SEM, and XRD. The UV analysis revealed a sharp band at 294 nm with an energy band gap of 4.27 eV; hence, the prepared CuO NPs are semiconductor materials. FTIR spectrum revealed an intense peak at 590 cm−1, attributed to Cu‐O bonds. SEM analysis discovered that the CuO NPs were non‐spherical, polydispersed, and agglomerated. The XRD analysis showed a monoclinic crystal structure with crystallite sizes of 11–31 nm. The photocatalytic activity of CuO NPs was responsible for the decomposition of 87.2% methylene blue (MB) in sunlight following pseudo‐first‐order (k = 0.01708 min−1) kinetics. The CuO NPs depicted significant antimicrobial activity and complete biofilm inhibition at 100 µg/mL against Bacillus licheniformis, Escherichia coli, and Pseudomonas aeruginosa. In addition, CuO NPs acted as sensors for heavy metal ions such as Pb2+ and Fe2+. The study suggests the potential of rhamnogalacturonan‐capped CuO NPs for successful use in antibacterial applications, environmental remediation, and pollutant detection. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Environmental Quality Management 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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      – Type: doi
        Value: 10.1002/tqem.70308
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 16
        StartPage: 1
    Subjects:
      – SubjectFull: Sustainable chemistry
        Type: general
      – SubjectFull: Pollution monitoring
        Type: general
      – SubjectFull: Environmental remediation
        Type: general
      – SubjectFull: Copper oxide
        Type: general
      – SubjectFull: Flaxseed
        Type: general
      – SubjectFull: Anti-infective agents
        Type: general
      – SubjectFull: Photocatalysts
        Type: general
      – SubjectFull: Polysaccharides
        Type: general
    Titles:
      – TitleFull: Flaxseed‐Derived Rhamnogalacturonan as a Biogenic Stabilizer for CuO Nanoparticles With Photocatalytic, Antimicrobial, and Pollutant‐Sensing Applications.
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              M: 03
              Text: Spring2026
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              Y: 2026
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