荷正电大豆蛋白和丙烯酸的复合体系研究

通过酶解大豆蛋白获得荷正电大豆蛋白,采用HPLC、Zeta电位、TEM对其酶解行为进行了追踪,进一步将酶解得到的大豆蛋白与丙烯酸复合,对复合物的溶液行为和微结构进行考察研究。结果显示:酶解大豆蛋白后得到荷正电的球形粒子,其能够与丙烯酸通过静电作用形成球形的复合物SPI-AA纳米粒子,该球形粒子在加入引发剂引发聚合反应后粒径变小,在加入交联剂交联后粒径也随之变小。该纳米颗粒在药物负载、生物传感、水处理等领域有较好的应用前景。

Study on Composite System of Positively Charged Soy Protein Isolate and Acrylic Acid

Positively charged soy protein isolate(PCSPI)was prepared via the enzymatic hydrolysis of soy protein and the enzymatic hydrolysis process was traced by HPLC,Zeta and TEM.Then the composite of the positively charged soy protein isolate and acrylic acid(AA)was prepared,further the solution behavior and microstructure of the composite were studied.The result showed that the positively charged spherical particles were obtained after the enzymatic hydrolysis of soy protein.These particles could form spherical complex particles with AA through electrostatic interaction.The size of the complex particles became smaller with the addition of initiator or by crosslinking.Such nano-particles could be potentially used in the fields of drug loading,biosensor and water treatment.