Plant sporoderm are among the most robust biomaterials in nature. The spore/pollen cell material can be easily extracted leaving an excellent natural microcapsule that can serve as a potential drug delivery mechanism for different biopharmaceutical applications. See related post on dandelion pollen in a similar application.
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Pollen-based microcapsules such as hollow sporopollen exine capsules (SECs) have emerged as excellent drug delivery and microencapsulation vehicles due to their eco-friendly nature, uniform micron-scale size, and chemical and physical stability. Natural pollen species such as dandelion pollen grains offer diverse architectural features such as large internal cavities and a tough outer exine layer that can be readily prepared and utilized as microencapsulation materials.
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