Encapsulation ratio, encapsulation yield and in vitro release of particles were measured by UV method. Results indicated that encapsulation ratio and encapsulation yield increased with CyA and Cs-Chol concentration.

• 用紫外-可见分光光度法测定微粒的载药率、包封率和体外释放行为,结果表明:载药率和包封率随CyA浓度,壳聚糖-胆固醇双亲性聚合物的浓度增大而增大;