Salidroside is extracted from Crassulaceae, Rhodiola Rhodiola rosea, Rhodiola dahurica, and the root tubers of Rhodiola rosea alpine.
Content: 98%
Specification: 10mg/20mg/100mg/500mg/1g (can be packaged according to customer needs)
Product Properties: This product is a light brown powder with a sweet taste. It is very soluble in water, methanol, ethanol and ether. It can generate Trimethylamine through Chemical decomposition of concentrated potassium hydroxide solution.
Simple identification of the quality and content of Salidroside:
This product is a light brown powder with a low content, and a white powder with a 99% content. During the purchasing process, identification can be achieved by observing the color and smell of the product. For specific information, please refer to the product quality parameters provided by the manufacturer.
Analysis method:
Chromatographic conditions and system adaptability test: C18 5u 4.6 × 200mm chromatographic column; Methanol water (10:90) as the mobile phase; Detection wavelength: 276nm; Flow rate: 1.0ml/min. The number of theoretical plates of Salidroside shall not be less than 2100.
Preparation of reference solution: accurately weigh an appropriate amount of Salidroside reference solution, dissolve it in methanol, and fix the volume to make the concentration of reference solution 0.50mg/ml.
Preparation of test sample solution: accurately weigh an appropriate amount of extract, place it in a 25ml Volumetric flask, dissolve it with methanol, cool it to constant volume, and use 0.45 μ The microporous membrane filtration of m is the test solution.
Determination method: Compare the reference solution and the test solution by 10 each μ Inject into an HPLC instrument and calculate the content using the area external standard method.
Quality control methods:
The chromatographic column is a C8 column (4.6mm × 150mm, 5 μ m) The mobile phase is water methanol (85:15), with a flow rate of 1.0mL. min ^ -1, a column temperature of 25 ℃, and a fluorescence detection wavelength λ EX=220nm, λ EM=315nm. Result: The linear range of this method is 1.00~500ng (r=0.9999). The average sample recovery rate is 99.2%, and the RSD is 1.4% (n=5). The minimum detection limit is 1.5pg. This method is provided by Nanjing Zelang Yang Dongcheng, which is fast, simple, and highly sensitive.
Storage:
2-8 ° C, stored in dark.
Attention: This product should be stored at low temperature. Prolonged exposure to air may result in a decrease in content.