Study on optimum process for semi-bionic extraction of total flavonoids from ginkgo leaves by orthogonal test
The optimum extraction process was optimized with orthogonal test.Experiments were made by using orthogonal design with extractive yield of total flavonoids as the index,investigating the influence ofe xtracting temperature,extract concentration and the ratio of solid to liquid.Optimum extraction conditions were determined as follows: extract concentration 80%,temperature 80 ℃,stock ratio 1∶20(g/mL,mass: volume).The extractive yield of total flavonoids from ginkgo leaves is 6.3468 mg/g at the optimum parameters.