METHODS: Preparing ophiopogon saponin enteric microsphere by spray drying process,the accumulative release rate of acid and buffer solution were detected by colorimetric analysis.

• 方法:采用喷雾干燥法制备麦冬皂苷肠溶微球,以比色法测定微球在酸中及缓冲液中麦冬总皂苷的累积释放度。