目的 制备一款环境友好可降解且具有缓释效果的植物精油微球囊。方法 采用不同酶水解条件制得多孔淀粉（PS），通过植物精油吸附率对其吸附性能进行评价；探究羧甲基壳聚糖（CMCS）和海藻酸钠（SA）的浓度对百里香精油（TEO）主要成分的缓释效果，以确定微胶囊最佳的制备条件。采用GC-MS分析在室温（温度为(30±1)℃，相对湿度为(50±3)%）密闭体系下微胶囊主要成分的释放规律。结果 当CMCS和SA的质量分数分别为1.2%和2.4%时，制得的CMCS-SA-PS/TOE微胶囊具有优异的缓释效果。在封闭体系中，14 d麝香草酚的累计释放率为19.18%。结论 CMCS和SA包覆的微胶囊具有良好的缓释性能，可以延长TEO的主要成分麝香草酚在室温下的释放时间。

The work aims to prepare an environmentally friendly, degradable and slow-release plant essential oil mi-crosphere. The adsorption rate of plant essential oil was used to evaluate the adsorption performance of porous starch (PS) prepared under different enzyme hydrolysis conditions. The sustained release effect of CMCS and SA concentration on the main components of thyme essential oil (TEO) was explored to determine the best preparation conditions. GC-MS was used to analyze the release rule of main components of microcapsules in a closed system at (30±1)℃ and (50±3)% RH. When the mass fractions of CMCS and SA were 1.2% and 2.4%, respectively, CMCS-SA-PS/TOE microcapsules prepared had excellent sustained release effect. In the closed system, the cumulative release rate of 14 d thymol was 19.18%. Microcapsules coated by CMCS and SA have good slow release performance and they can prolong the release time of thymol (the main component of TEO) at room temperature.