银杏叶黄酮粗提物再精制

Refing on Flavone Gruff Bring up Substance of Leaves Ginkgo Biloa L

确定银杏叶黄酮提物再精制的新方法———恒流反相高压液相色谱梯度洗脱法。填料为反相YWG -C18H3 7,10～ 30 μm。梯度洗脱液为甲醇 :水 =3:7和甲醇 :水 =4 :6及纯甲醇。总黄酮含量可达 90 %(HPLC)

Search a new method in refing leaves of Ginkgo Biloa L Flavone Gruff bring up substance-the method is constance elution speed RP-HPLC gradiant elution.The packing is RP-YWG-G 18 H 37 ,10～30μm.The gradition elution is methanol:water=3:7 and 4:6 as well as pure methanol.Total content of Flavone reaches 90%(HPLC) and over.