Total triterpenes in different parts of Hippophae rhamnoides with different ages in Qinghai Province

A research was conducted to study the total triterpenes distribution among different ages and different parts of sea buckthorn (Hippophae rhamnoides) from Datong County, Qinghai Province. The total triterpenes were extracted by ultrasonic extraction process and determined by spectrophotometry, ursolic acid used as control sample. The results showed that, the content of total triterpenes in sea buckthorn seedling leaf was highest among all of the samples. Furthermore, plant age and parts played important role in accumulation of plant secondary metabolites. It indicated that, sea buckthorn leaf was more valuable for the exploitation and development of total triterpenes. Key words:sea buckthorn; total triterpenes; spectrophotometry