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Antioxidant Capacity and Polyphenol Compounds Characterization Through LC‐ESI‐QTOF‐MS/MS in Citrus Peels From Different Varieties.

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Title: Antioxidant Capacity and Polyphenol Compounds Characterization Through LC‐ESI‐QTOF‐MS/MS in Citrus Peels From Different Varieties.
Authors: Tanujaya, M. B.1 (AUTHOR), Ahmadi, F.1 (AUTHOR), Beyatli, A.1 (AUTHOR), Imran, A.1 (AUTHOR), Suleria, Hafiz A. R.1 (AUTHOR) hafiz.suleria@unimelb.edu.au, Kashyap, Piyush1 (AUTHOR) piyush.27419@lpu.co.in
Source: Journal of Food Biochemistry. 10/23/2025, Vol. 2025, p1-12. 12p.
Subjects: Polyphenols, Flavonoids, Circular economy, Oxidant status, Bioactive compounds, Orange peel, Citrus fruits, Liquid chromatography-mass spectrometry
Abstract: Citrus peel, a waste product of fruit processing industries, is an abundant source of polyphenols with strong antioxidant capacity. This study aimed to investigate the antioxidant potential of peels from six Victorian‐grown citrus varieties through a combination of in vitro antioxidant assays and polyphenol profiling by LC‐ESI‐QTOF‐MS/MS. Peels from Cara Cara Navel variety had the greatest total phenolic content (7.26 mg GAE/g). Peels from Dekopon variety demonstrated the strongest antioxidant capacity in ABTS, DPPH, and FRAP assays. A moderate positive correlation was observed between total flavonoid content and DPPH antioxidant activity (r = 0.61), while it had a high positive correlation (r = 0.71) with FRAP. A tentative characterization of polyphenolic compounds using LC‐ESI‐QTOF‐MS/MS analysis identified 55 phenolic compounds within the citrus peels, with flavonoids representing the predominant class. Our findings demonstrated the significant antioxidant capacity and polyphenolic compounds in these citrus peel samples, in particular Dekopon variety. These findings provide the first detailed characterization of polyphenolic diversity across Victorian citrus peels and highlight their potential as a source of bioactive compounds. The observed varietal differences and significant antioxidant properties provide a foundation for valorization of citrus peel waste for utilization in food preservation or nutraceutical development, thereby supporting a broader circular economy. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Food Biochemistry 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: Antioxidant Capacity and Polyphenol Compounds Characterization Through LC‐ESI‐QTOF‐MS/MS in Citrus Peels From Different Varieties.
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  Data: <searchLink fieldCode="AR" term="%22Tanujaya%2C+M%2E+B%2E%22">Tanujaya, M. B.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ahmadi%2C+F%2E%22">Ahmadi, F.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Beyatli%2C+A%2E%22">Beyatli, A.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Imran%2C+A%2E%22">Imran, A.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Suleria%2C+Hafiz+A%2E+R%2E%22">Suleria, Hafiz A. R.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> hafiz.suleria@unimelb.edu.au</i><br /><searchLink fieldCode="AR" term="%22Kashyap%2C+Piyush%22">Kashyap, Piyush</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> piyush.27419@lpu.co.in</i>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Food+Biochemistry%22">Journal of Food Biochemistry</searchLink>. 10/23/2025, Vol. 2025, p1-12. 12p.
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  Data: <searchLink fieldCode="DE" term="%22Polyphenols%22">Polyphenols</searchLink><br /><searchLink fieldCode="DE" term="%22Flavonoids%22">Flavonoids</searchLink><br /><searchLink fieldCode="DE" term="%22Circular+economy%22">Circular economy</searchLink><br /><searchLink fieldCode="DE" term="%22Oxidant+status%22">Oxidant status</searchLink><br /><searchLink fieldCode="DE" term="%22Bioactive+compounds%22">Bioactive compounds</searchLink><br /><searchLink fieldCode="DE" term="%22Orange+peel%22">Orange peel</searchLink><br /><searchLink fieldCode="DE" term="%22Citrus+fruits%22">Citrus fruits</searchLink><br /><searchLink fieldCode="DE" term="%22Liquid+chromatography-mass+spectrometry%22">Liquid chromatography-mass spectrometry</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Citrus peel, a waste product of fruit processing industries, is an abundant source of polyphenols with strong antioxidant capacity. This study aimed to investigate the antioxidant potential of peels from six Victorian‐grown citrus varieties through a combination of in vitro antioxidant assays and polyphenol profiling by LC‐ESI‐QTOF‐MS/MS. Peels from Cara Cara Navel variety had the greatest total phenolic content (7.26 mg GAE/g). Peels from Dekopon variety demonstrated the strongest antioxidant capacity in ABTS, DPPH, and FRAP assays. A moderate positive correlation was observed between total flavonoid content and DPPH antioxidant activity (r = 0.61), while it had a high positive correlation (r = 0.71) with FRAP. A tentative characterization of polyphenolic compounds using LC‐ESI‐QTOF‐MS/MS analysis identified 55 phenolic compounds within the citrus peels, with flavonoids representing the predominant class. Our findings demonstrated the significant antioxidant capacity and polyphenolic compounds in these citrus peel samples, in particular Dekopon variety. These findings provide the first detailed characterization of polyphenolic diversity across Victorian citrus peels and highlight their potential as a source of bioactive compounds. The observed varietal differences and significant antioxidant properties provide a foundation for valorization of citrus peel waste for utilization in food preservation or nutraceutical development, thereby supporting a broader circular economy. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Food Biochemistry 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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RecordInfo BibRecord:
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        Value: 10.1155/jfbc/6515172
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      – Code: eng
        Text: English
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        PageCount: 12
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      – SubjectFull: Polyphenols
        Type: general
      – SubjectFull: Flavonoids
        Type: general
      – SubjectFull: Circular economy
        Type: general
      – SubjectFull: Oxidant status
        Type: general
      – SubjectFull: Bioactive compounds
        Type: general
      – SubjectFull: Orange peel
        Type: general
      – SubjectFull: Citrus fruits
        Type: general
      – SubjectFull: Liquid chromatography-mass spectrometry
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      – TitleFull: Antioxidant Capacity and Polyphenol Compounds Characterization Through LC‐ESI‐QTOF‐MS/MS in Citrus Peels From Different Varieties.
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              M: 10
              Text: 10/23/2025
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              Y: 2025
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