Optimum scheme of extracting flavonoid in Camptotheca acuminata leaves
Under the different temperatures,solvent volumes and extractinghours,using water (pH=10)as solvent,the experiment how to more extract content of flavonoid in Camptotheca acuminata leaves was made by use of quadratic current spinning combination design metod.According to the experimental data,an ternary quadratic form regression equation was built and analyzed;and a simulate test to different leaves of three factors was did with computer.The results showed that the optimum scheme of extracting flavonoid from Camptotheca acuminata leaves was extracting temperature of 90-100 ℃,solvent volume of 50-60 mL and extracting time of 25-37 min.