International Journal For Multidisciplinary Research

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Study of UV-B Radiation on Antioxidant Activity of Medicinally Important Plant Simarouba Glauca DC

Author(s) Dr. Sachin Bhagat, Sarika D. Patil, Nivas M. Desai, Chirag U. Narayankar, D. K. Gaikwad
Country India
Abstract Abstract –
This study investigates the effect of enhanced UV-B radiation on the growth, development, and antioxidative activities of Simarouba glauca (Laxmitaru), an evergreen, medicinally and economically important oil-yielding plant, suitable for developing plant belts to mitigate UV effects. One-year-old seedlings were exposed to supplementary UV-B radiation for varying durations (4, 8, 12, and 16 days) using artificial UV-B tubes.The research focused on key antioxidant parameters across root, stem, and leaf tissues. The DPPH radical scavenging activity was found to increase significantly in root (25-50% higher) and stem (50-150% higher) tissues after UV-B treatment, indicating an elevation of antioxidant potential. Similarly, the radical scavenging activity showed a marked increase, particularly in the root (600-1000% higher) and stem (200-300% higher) tissues, suggesting a strong mechanism to neutralize this toxic ROS. While the Ferric Reducing Antioxidant Power (FRAP) showed a slight, negligible decrease (5-10%), the Reducing Power was elevated in the leaf tissue (5-35%). These findings suggest that S. glauca seedlings, upon exposure to UV-B stress, activate robust internal defence mechanisms, particularly through the enhancement of free radical and hydrogen peroxide scavenging activities in root and stem tissues. This demonstrates the plant's considerable UV-B tolerance and beneficial potential, improving the bioactive compounds' value and making it a suitable candidate for plantation in areas facing increased UV-B stress.
Keywords UV-B radiation antioxidant, Simarouba,
Field Biology > Medical / Physiology
Published In Volume 7, Issue 2, March-April 2025
Published On 2025-04-05
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