AI Article Synopsis
- The study focused on analyzing the DPPH free radical scavenging activity of flavone C-glycosides from various parts of Dendrobium officinale.
- Various techniques (TLC and HPLC) were used to identify and quantify flavonoids, revealing that leaves and flowers had higher levels compared to stems, while roots had the least.
- The findings suggest that leaves and flowers have better antioxidant properties than stems, indicating their potential for use in health applications.
Article Abstract
Objective: To study the scavenging DPPH free radicals activity of flavone C-glycosides from different parts of Dendrobium officinale.
Method: The types and contents of flavonoids from different parts of D. officinale were analyzed by TLC and HPLC. The antioxidant effect was tested by scavenging DPPH free radicals activity.
Result: The stems, leaves and flowers contained the same type of flavone C-A glycosides and 8 common peaks were identified. The content of flavone C-A glycosides was significantly different. The content of flavone C-glycosides in leaves and flowers was higher than that in stems. The flavonoid in roots was less. Stems contained naringenin, which was not identified in root, leave and flower. Both stems and leaves had antioxidant capacity of eliminating DPPH free radicals, of which scavenging DPPH free radicals activity of leaves was better than stems.
Conclusion: Considering the content of flavonoid and antioxidant activity leave and flower of D. officinale may substitute stems. The study provides a preliminary basis for the development and utilization of leave and flower of D. officinale.
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