A structure containing polyhydroxyalkanoate and a magnetic substance includes an external phase part containing polyhydroxyalkanoate and an internal phase part contained in the external phase part, at least one of the external phase part and the internal phase part containing a magnetic substance. Accordingly, provided is a microcapsule, which can be suitably used for formation of an active ingredient of a sustained release pharmaceutical preparation or an ultrasonic contrast agent.
一种含有聚羟基
脂肪酸酯和磁性物质的结构,包括一个包含聚羟基
脂肪酸酯的外相部分和一个包含在外相部分中的内相部分,其中至少一个外相部分和内相部分含有磁性物质。因此,提供了一种微胶囊,可适用于制备持续释放药物制剂或超声造影剂的活性成分。