[Objectives]To study the optimal extraction process of total flavonoids in Rhodiola rosea L.,and further facilitate the development and utilization of Rhodiola rosea L. [Methods]With Rhodiola crenulata as raw material...[Objectives]To study the optimal extraction process of total flavonoids in Rhodiola rosea L.,and further facilitate the development and utilization of Rhodiola rosea L. [Methods]With Rhodiola crenulata as raw material,ethanol as extractant,ultrasonic extraction as the extraction method,the single factor method was first used for preliminary investigation of effect of ethanol volume fraction,solid-liquid ratio,extraction temperature and extraction time on the flavonoids extraction rate,and then the Box-Behnken response surface method was used to optimize the extraction process of total flavonoids in R. crenulata. [Results] The optimal extraction conditions: ethanol concentration of 72%;solid-liquid ratio of 1∶ 43; extraction temperature of 66℃; extraction time of 50 min. Under these conditions,the extraction rate of total flavonoids from R. crenulata was 2. 591%. [Conclusions] The results showed that the method of response surface was reasonable and feasible for the optimization of ultrasonic extraction of total flavonoids from R. crenulata.展开更多
Objective To inspect the effect of Sachalin rhodiola rhizome extract to the swimming time and content of liver starch and liver cells morphous of sports fatigue rat.Methods Using weight loading swimming to determine s...Objective To inspect the effect of Sachalin rhodiola rhizome extract to the swimming time and content of liver starch and liver cells morphous of sports fatigue rat.Methods Using weight loading swimming to determine swimming time,using kits to determine liver starch,using transmission electron microscope to observe the diversify of rat liver cells morphous and construction.Results To compare with negative control group,the Sachalin rhodiola rhizome extract can obviously extend survival time of swimming rat,increase the content of liver starch.Conclusions Sachalin rhodiola rhizome extract can raise the staying power of sports fatigue rat,strengthen sport ability and play a part in antifatigue by increasing the content of liver starch and protecting liver cells of sports fatigue rat.展开更多
基金Supported by Tibetan 13th Five-Year Agricultural Product Processing and Product Development Project
文摘[Objectives]To study the optimal extraction process of total flavonoids in Rhodiola rosea L.,and further facilitate the development and utilization of Rhodiola rosea L. [Methods]With Rhodiola crenulata as raw material,ethanol as extractant,ultrasonic extraction as the extraction method,the single factor method was first used for preliminary investigation of effect of ethanol volume fraction,solid-liquid ratio,extraction temperature and extraction time on the flavonoids extraction rate,and then the Box-Behnken response surface method was used to optimize the extraction process of total flavonoids in R. crenulata. [Results] The optimal extraction conditions: ethanol concentration of 72%;solid-liquid ratio of 1∶ 43; extraction temperature of 66℃; extraction time of 50 min. Under these conditions,the extraction rate of total flavonoids from R. crenulata was 2. 591%. [Conclusions] The results showed that the method of response surface was reasonable and feasible for the optimization of ultrasonic extraction of total flavonoids from R. crenulata.
文摘Objective To inspect the effect of Sachalin rhodiola rhizome extract to the swimming time and content of liver starch and liver cells morphous of sports fatigue rat.Methods Using weight loading swimming to determine swimming time,using kits to determine liver starch,using transmission electron microscope to observe the diversify of rat liver cells morphous and construction.Results To compare with negative control group,the Sachalin rhodiola rhizome extract can obviously extend survival time of swimming rat,increase the content of liver starch.Conclusions Sachalin rhodiola rhizome extract can raise the staying power of sports fatigue rat,strengthen sport ability and play a part in antifatigue by increasing the content of liver starch and protecting liver cells of sports fatigue rat.