Study on purification of general flavonoids from buckwheat hulls with macroporous resin
Absorbability and desorption property of four macroporous resins for general flavonoids was compared. Taking the Absorbability and desorption property as a guideline, this research has study the purifying conditions of general flavonoids from buckwheat hulls with macroporous resin. The result showed that the absorbability and desorption property of AB -8 macroporous resin are the best to general flavonoids in buckwheat hulls. The best purification condition in buckwheat hulls is: general flavonoids concentration 0.24 mg/ mL, quantity of general flavonoids solution 8 BV, adsorption velocity of flow 2.0 mL/min, concentration of desorption solution 40%, desorption velocity of flow 1.0 mL/min. The purity of general flavonoids extracted from buckwheat hulls is raises to 59.5% from 27.9%.