The application of polysulfone-Fe3O4 composite ultrafiltration membrane in the purification
In this paper, a novel polysulfone (PSF)Fe3O4 composite ultrafiltration membrane was prepared and employed to purify the flavonoids from the ginkgo biloba extraction (GBE). The mass susceptibility (x) of the ginkgo flavonoids with the purity of 98％ was tested being 3.99×10-4, so they showed paramagnetic. It was proved by Magnetic Property Measurement System (MPMS) that composite membrane was super-paramagnetic for the addition of nano-sized Fe3O4 particles. The content of flavonoids in the products were 30.16 wt ％, 35.24 wt. ％, 42.5 wt ％, 50.58 wt ％, 52.20 wt ％, 52.87 wt. ％ when ultrafiltration were performed in the magnetic field of OT, 0.2 T, 0.4 T, 0.6 T, 0.8 T, 1.0 T respectively. The results illustrated that the use of magnetic field with the composite membrane can improve the flavonoids content in the products.
Polysulfone(PSF)-Fe3O4 composite ultrafiltration membrane Ginkgo flavonoids Mass susceptibility Superparamagnetism Magnetic field
Yahui He Xiaojing Fan Li Jia Li Zhou Canping Pan Xiaogang Chu
Beijing Center For Physical & Chemical Analysis Beijing,China China Agricultural University Beijing, China Chinese Academy of Inspection and Quarantine Beijing, China
国际会议
哈尔滨
英文
279-282
2012-06-16（万方平台首次上网日期，不代表论文的发表时间）