Antioxidant and anti-inflammatory activities of Orostachys japonicus

• Published in: Asian Pacific Journal of Tropical Biomedicine
• Main Authors: Eun-Sun Hwang, Nhuan Do Thi
• Format: Article in Journal/Newspaper
• Language: English
• Published: Wolters Kluwer Medknow Publications 2020
• Subjects: orostachys japonicus; antioxidant; raw 264.7; anti-inflammation; nitrix oxide; Arctic medicine. Tropical medicine; RC955-962; Biology (General); QH301-705.5; Arctic
• Online Access: https://doi.org/10.4103/2221-1691.294092; https://doaj.org/article/374ad40b5d454122a879377a3b05d86e

Objective: To determine the bioactive compounds of Orostachys japonicus (O. japonicus) (Maxim.) A. Berger extraction by different solvents (70% ethanol or water) and to evaluate the in vitro antioxidant and anti-inflammatory activities. Methods: Total polyphenol, flavonoid, and anthocyanin contents in O. japonicus extract were measured. Antioxidant activities were determined by DPPH, ABTS, and superoxide radical-scavenging ability assays. Anti-inflammatory activities were evaluated by nitric oxide production, tumor necrosis factor-α, and interleukin-6 expression techniques. Results: Extraction with 70% ethanol yielded the highest total polyphenol (60.03 mg/g dry weight) and flavonoid (55.50 mg/g dry weight) contents. The total anthocyanin contents in 70% ethanol and water extracts were 57.25 and 91.71 mg/g dry weight, respectively. The 70% ethanol extract also showed stronger antioxidant activity than the water extract. Antioxidant activity and reducing power increased with the increasing concentration of O. japonicus extract. O. japonicus extract at 0-400 μg/mL did not affect the growth of RAW 264.7 cells, whereas dose-dependent inhibition of nitric oxide, tumor necrosis factor-a, and interleukin-6 production was observed. Conclusions: O. japonicus inhibits oxidative and inflammatory reactions with potentially positive health-related effects.