The main extraction methods of Salidroside include water extraction, microwave assisted extraction, ultrasonic extraction and supercritical CO2 extraction combined with the above three methods.
Different Extraction Methods and Effects of Salidroside
1. The highest extraction rate of Salidroside was obtained by supercritical CO2 extraction water extraction method. The effects of solid-liquid ratio, extraction time and extraction temperature on the extraction rate of Salidroside were investigated by water extraction method.
For the supercritical CO2 extraction water extraction method, the effects of factors such as extraction pressure, extraction temperature, extraction time, and entrainer concentration on the extraction rate were mainly investigated. The optimal supercritical C02 extraction conditions were: extraction pressure 40 MPa, extraction temperature 55 ℃, entrainer 7 mL absolute ethanol, extraction time 5 h, and the extraction rate of Salidroside reached 99.6%.
2. Microwave assisted extraction method was used to investigate the effects of solid-liquid ratio, soaking time, microwave power, microwave treatment time and magnetic stirring time on the extraction rate of Salidroside.
3. The ultrasonic extraction method mainly investigates the effects of solid-liquid ratio, soaking time, ultrasonic power, ultrasonic time, and ultrasonic temperature on the extraction rate.
4. The method of separating and purifying Salidroside with macroporous adsorption resin was studied. Through the study of the physical properties of the resin and the adsorption and desorption capacity of Salidroside, the strong polar DA-201 was selected to purify Salidroside. Furthermore, the dosage of DA-201, the flow rate during adsorption, the concentration of desorption agent, the dosage of desorption agent, and the optimal flow rate during desorption were determined. The results showed that the optimal process conditions were as follows: the amount of adsorbent was 5 mg Salidroside/g dry resin, and the adsorption flow rate was 1 BV/h; Select an ethanol solution with a mass fraction of 10% as the desorption agent, and the desorption flow rate is 2 BV/h, The amount of desorption agent is 16mL/g of dry resin. Under the above process conditions, the purity of Salidroside obtained is 99%.
The above introduction of different extraction methods and effects of Salidroside, more Salidroside related content can continue to pay attention to the dynamic of Xi'an Jincuifang Company.