Comparison of Antioxidant Activities in 5 Plant Extracts

This study was conducted to evaluate the antioxidant activity of 5 plant extracts (garlic, acai berry, acenthopanax, Asian lizard’s tail, sericea lespedeza). Extracts from these plants were vacuum-concentrated, freeze-dried, and subsequently analyzed. Antioxidant activity was assessed through ABTS⁺ radical scavenging activity, DPPH radical scavenging activity, ferric reducing antioxidant power (FRAP), total polyphenol content (TPC), and total flavonoid content (TFC). Among the 5 plant extracts, Asian lizard’s tail exhibited the highest ABTS+(80.58%) and DPPH (75.29%) radical scavenging activity (p<0.05). The FRAP assay revealed that Asian lizard’s tail demonstrated the highest reducing power (88.33 mg TE/mL), followed by acai berry (67.61 mg TE/mL), sericea lespedeza (39.88 mg TE/mL), acanthopanax (28.30 mg TE/mL), and garlic (23.15 mgTE/mL) (p<0.05). Furthermore, Asian lizard’s tail exhibited the highest TPC (11.76 mg GAE/mL) and TFC (17.98 mg NE/mL) among the tested plant extracts (p<0.05). Based on these findings, Asian lizard’s tail has potential as a natural antioxidant that could replace synthetic antioxidants. Additionally, it may serve as a candidate for the development of natural antioxidants in cell culture applications.