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Natural product | Experimental model | Constituents responsible for activity | Mechanism (s) | Pharmacological effects/findings | References |
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Garcinia kola | Microsomal lipid peroxidation | Kolaviron | Antioxidation and chelating properties | Mitigation of iron/ascorbate-induced damage to microsomal lipids | [97] |
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Azadirachta indica (neem) leaves | Ferric reducing antioxidant plasma (FRAP) assay | Flavonoid and phenolic compounds | Anti-oxidation, scavenging and reduction of the power of ferric ion (Fe3+) to ferrous ion (Fe2+) | Antioxidant activity | [107] |
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Lotus (Nelumbonucifera Gaertn) leaves | Iron loaded human hepatocellular (HepG2) cells | Polyphenolic compounds | Antioxidation, iron chelating and scavenging properties | Dose-dependent decrease in labile iron pool | [154] |
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Bergamot and orange juices | Iron overloaded human lung epithelial cells (A549 cells) | Flavonoids | Antioxidation chelating and blockade of the redox activity of iron | Reduced generation of reactive oxygen species and membrane lipid peroxidation. Inhibition of DNA-oxidative damage | [155] |
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Spondias pinnata stem bark | In vitro assays (IC50 measurements) | Flavonoids and phenolic compounds | Antioxidation, radical scavenging, Iron reducing, and chelating properties | Decrease in the level of labile iron pool | [156] |
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Essential oils of Ocimum basilicum L., Origanum vulgare L., and Thymus vulgaris L. | In vitro assays (IC50 measurements) | Essential oils | Antioxidation and chelating properties | Inhibition of lipid peroxidation induced by Fe(2+)/ascorbate or by Fe(2+)/H(2)O(2) | [157] |
Red ginger (Zingiber officinale var. Rubra) and white ginger (Zingiber officinale Roscoe) | Inhibitory effect on Fe2+-induced lipid peroxidation in rat brain in vitro | Flavonoids and phenolic compounds | Fe(2+) chelating ability, OH scavenging and iron reducing power activities | Protective effect by reducing malondialdehyde contents of the brain | [158] |
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Unripe pawpaw (Carica papaya) fruit | Inhibitory effect on Fe2+-induced lipid peroxidation in rat’s pancreas in vitro | Flavonoids and phenolic compounds | Antioxidation, iron chelating and radical scavenging properties | Reduced malondialdehyde contents in the pancreas; Inhibition of lipid peroxidation | [159] |
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Primula heterochroma | Inhibitory effect on Fe2+-induced lipid peroxidation and oxidative stress in rat brain in vitro | Flavonoids and phenolic compounds | Fe(2+) chelating, radical scavenging and reducing power activities | Protective effect by reducing brain thiobarbituric acid reactive substances (TBARS) levels | [160] |
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