Increasement of Eleutherosides and Antioxidant Activity in Eleutherococcus senticosus Adventitious Root by Jasmonic acid

This study was carried out to investigate the impacts of jasmonic acid (JA) on adventitious root culture of Eleutherococcus senticosus. Adventitious root of E. senticosus were treated with jasmonic acid (JA) and cultured for 30 days. JA inhibited the root growth but increased eleutherosides accumulation, total phenolic contents and antioxidant activity. Among various concentrations of JA, 1.0 mg/L JA increased the total phenolic contents in E. senticosus adventitious root to $39.81{\mu}g/g$, about 2.6 times higher than that of the control. Consequently, high accumulation of total phenolic contents led to increase the antioxidant activity to 82.41%. The antioxidant activity of control was 37.89% at $2500{\mu}g/mL$. A linear correlation ($R^2$ = 0.9937, 0.9648 and 0.9883) was also shown between antioxidant activity (at 1250, 1875, and $2500{\mu}g/mL$) and total phenolic contents of adventitious root of E. senticosus.