Summary

Accumulation and Variation of Sinensetin Content in Orthosiphon stamineus Based

on Phenological Stages

Rau meo (Orthosiphon Stamineus Benth., Lamiaceae) is a medicinal herb trusted for many centuries for treating ailments of the kidney, bladder stone, urinary tract infection, liver and bladder problems, diabetes, rheumatism and gout. It is also used to reduce cholesterol and blood pressure. Sinensetin is one of the most important and specific active compound in O. stamineus. The biological effects of sinensetin have been proved.

In the research, plant material was harvested at different phenological stages (before budding, full flowering, and after flowering) of the life cycle of the species. The content of sinensetin in samples were measured using HPLC method. Results showed that the accumulation of sinensetin in leaf was higher than that in other organs. The content of sinensetin was increased gradually from before budding stage to flowering stage and reached the maximum content at time of full flowering, then decreasing quickly in after flowering stage.

Keywords: Orthosiphon stamineus, sinensetin, phenological stage. 

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