ArticlePloS one2022
Antioxidant properties of bee propolis and an important component, galangin, described by X-ray crystal structure, DFT-D and hydrodynamic voltammetry.
Article in PloS one, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 16 papers.
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Who cites it
16 citing papers in PubMed, 23 citations in OpenAlex.
- Exploring the Antibacterial, Anti-Inflammatory, and Antioxidant Properties of the Natural Food Supplement "Antibiotics (Basel, Switzerland) · 2025Article
- Propolis reduced the radiation-induced bystander effect in rat liver exposed to total head irradiation.Scientific reports · 2025Article
- Nanocomposite hydrogel incorporating Arnica montana extract, propolis-loaded chitosan nanoparticles, and menstrual blood-derived mesenchymal stem cells for allergic rhinitis therapy.Journal of materials science. Materials in medicine · 2025Article
- Modulating NLRP3 Inflammasomes in Idiopathic Pulmonary Fibrosis: A Comprehensive Review on Flavonoid-Based Interventions.Cell biochemistry and biophysics · 2025Review
- Potential Therapeutic Actions of Flavonoids Present in Propolis That Modulate Vascular Endothelial Growth Factor Signaling to Regulate Angiogenesis.Phytotherapy research : PTR · 2025Review
- Identification of galangin as a therapeutic candidate for primary biliary cholangitis via systematic druggable genome-wide Mendelian randomization analysis and experimental validation.Frontiers in pharmacology · 2025Article
- Protective effect of propolis in protecting against radiation-induced oxidative stress in the liver as a distant organ.Scientific reports · 2024Article
- Antioxidant Scavenging of the Superoxide Radical by Yerba Mate (International journal of molecular sciences · 2024Article
- Unveiling the Antioxidative Potential of Galangin: Complete and Detailed Mechanistic Insights through Density Functional Theory Studies.The Journal of organic chemistry · 2024Article
- Article
- Examining the Antioxidant and Superoxide Radical Scavenging Activity of Anise, (Pharmaceuticals (Basel, Switzerland) · 2023Article
- Azadiradione, a Component of Neem Oil, Behaves as a Superoxide Dismutase Mimic When Scavenging the Superoxide Radical, as Shown Using DFT and Hydrodynamic Voltammetry.Biomedicines · 2023Article
- Article
- Antioxidant Properties of Thymoquinone, Thymohydroquinone and Black Cumin (Antioxidants (Basel, Switzerland) · 2023Article
- Scavenging of Superoxide in Aprotic Solvents of Four Isoflavones That Mimic Superoxide Dismutase.International journal of molecular sciences · 2023Article
- Aromatic Polyphenol π-π Interactions with Superoxide Radicals Contribute to Radical Scavenging and Can Make Polyphenols Mimic Superoxide Dismutase Activity.Current issues in molecular biology · 2022Review
Corrections and comments
- Erratum issued
Authors and funding
6 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Propolis is produced by honeybees and used to seal their hives for defensive purposes and has been used in ethnopharmacology since ancient times. It is a lipophilic material containing a large collection of naturally produced plant organic molecules, including flavonoids. The flavonoid galangin is consistently found in propolis, independent of the hive geographical location and its X-ray crystal and molecular structure is reported. The antioxidant scavenging of superoxide by galangin and propolis is here presented. Using a cyclic voltammetry technique developed in our lab, we show that galangin is an excellent scavenger of the superoxide radical, perhaps even better than quercetin. Our results show that galangin displays a Superoxide Dismutase (SOD) function. This is described experimentally and theoretically (DFT). Two modes of scavenging superoxide are seen for galangin: (1) superoxide radical extraction of H atom from the hydroxyl moieties located in position 3 and 5 of galangin, which are also associated with proton incorporation defining the SOD action; (2) π-π interaction among several superoxide radicals and the galangin polyphenol ring that evolve towards release of O2 and H2O2. We describe these two actions separately as their relative sequence, and/or combination, cannot be defined; all these processes are thermodynamically spontaneous, or subjected to mild barriers.
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