The sporopollenin exine capsules (SECs) have recently attracted the attention of biological applications. The stability of SECs in human fluids is important issue to develop the controllable methods for the drug delivery system. Here, we analyzed the human plasma-triggered degradation of three species of SECs, i.e., camellia (Camellia sinensis L.), cattail (Typha angustifolia L.), and dandelion (Taraxacum officinale L.), regarding the physical and chemical aspects. The field emission scanning electron microscopy (FESEM) images showed no significant changes in the surface morphology of the SECs as increasing incubation time in human plasma, but we observed the increase of the rupture ratio by dynamic image particle analysis (DIPA). Also, Fourier-transform infrared spectroscopy (FTIR) combined with principal component analysis (PCA) addressed the chemical degradation in a species-specific manner. Specifically, the OH groups of camellia SECs, COC groups of cattail SECs, and CO groups of dandelion SECs showed significant changes.

孢粉素外膜胶囊（SEC）最近引起了生物学应用的注意。SEC在人体液体中的稳定性是开发药物输送系统可控方法的重要问题。在这里，我们分析了三种SEC中，人类血浆触发降解即，山茶（茶树L.），香蒲（香蒲属），蒲公英（西洋蒲公英L.），关于物理和化学方面。场发射扫描电子显微镜（FESEM）图像显示，随着在人血浆中孵育时间的增加，SEC的表面形态没有明显变化，但是我们通过动态图像颗粒分析（DIPA）观察到破裂率的增加。同样，傅立叶变换红外光谱（FTIR）与主成分分析（PCA）相结合以特定物种的方式解决了化学降解的问题。具体来说，山茶花SEC的O H组，香蒲SEC的C O C组和蒲公英SEC的C O组表现出显着变化。