Medicinal Plant Research 2024, Vol.14, No.4, 210-222 http://hortherbpublisher.com/index.php/mpr 214 confirmed through DPPH and ABTS assays, where kiwifruit oil showed significant radical scavenging activities with IC50 values of 48.55 µg/mL and 77.00 µg/mL, respectively (Ozden et al., 2023). These assays underscore the fruit's ability to mitigate oxidative damage by neutralizing harmful free radicals. Kiwifruit oil exhibits strong reducing capabilities, as demonstrated by its performance in iron (Fe3+), copper (Cu2+), and Fe3+-TPTZ assays. These tests reveal the fruit's potential to donate electrons and reduce metal ions, which is crucial for combating oxidative damage (Figure 2) (Ozden et al., 2023). The antioxidant properties of kiwifruit are further enhanced by its phenolic compounds, such as apigenin, epigallocatechin, caryophyllene oxide, and luteolin, which effectively scavenge free radicals and chelate metal ions. Flavonoids, including quercetin derivatives and catechins, also contribute significantly to the overall antioxidant capacity of kiwifruit (Hettihewa et al., 2018; Nie et al., 2020). Figure 2 Ferric ions (Fe3+)-reducing (A), cupric ions (Cu2+)-reducing (B), and Fe3+-TPTZ complexreducing (C) ability of kiwifruit (A. deliciosa) oil and standards (Adopted from Ozden et al., 2023)
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