Study On Some Factor That Effect The Salidroside Content In Rhodiola Sachalinensis

Rhodiola sachalinertsts A. Bor, an important plant, has been widely applied in food-stuffs health products, medicines etc. The salidroside content was determinated by high performance liquid chromatograph. And the relationships between salidroside content and some factors were analyzed in this paper. The factors include element concentration in soil. light, air temperature. soil moisture, nitrogen concentration in nutritive medium, seeding age. stages of development and storage methods. Our results showed that: (1) In Chang Bai Mountain, salidroside content increased with the nitrogen and organic concentration of soil and decrease with phosphorus and kalium concentration in rhizosphere soil of Rh. sachalinensis. (2)For cultured Rh. sachalinens,s, the weight of root decreased with light intensitx Salidroside content in the root of Rh. sachalinensis rapidly increased when photosynthetic affective radiation below 400p.mol photons m~2s~?and almost no change when it was above 21 4O0p~mo1 photons m s . Red light can enchance the saiidroside content distinctly The results of cultivetion by sand showed that, when the nitrogen concentration was less than 7 mmolIL. salidroside content was positively correlated with nitrogen concentration and root weight 馿creased- sharply Howeveiy~ when the nitrogen coiicentration.. was higher an 7 mmol/L negative correlatonship and no obvious decrease in root weight were obser~ ed. (3)Within the same seeding age, peak value of salidroside content was fond in the root of Rh. sachalinensis collected in September in Jagedaqi Distract. However, in different seeding ages. peak value of salidroside content was found in the root of 5-year-old five seeding age Rh. .cachalinensis. (4)Afier harvesting, the salidroside content in the root of Rh. sachalinensis preserved under 20C (Less than ten days) could be increased distinctly. Airing after water cooked, airing after streaming and oven drying under SOP were tested and the last one was the best disposal method for preserving salidroside. After drying with the last method, the salidroside content didn抰 decrease distinctly in 40 days.