In recent years, there is an increasing demand for replacing hazardous agrochemicals in intensive farming systems with natural pesticides, such as essential oils. Essential oils are sources of antimicrobial compounds and have the potential to combat weeds, pathogens and insects. Their use in greenhouse cultures seems promising, but their action is very rapid due to their high volatility. The aim of the current study was the encapsulation of essential oils into biopolymers for enhancing their efficiency and controlling their release. The essential oil of Rosemarinus officinalis (rosemary) (REO) was encapsulated in zein and polylactic acid (PLA) using electrohydrodynamic processing (EHD) and extrusion. The effect of various process parameters was evaluated through scanning electron microscopy (SEM), differential scanning calorimetry (DSC) and Attenuated Total Reflectance FT-IR Spectroscopy (ATR-FTIR). Ultraviolet–visible spectroscopy (UV–VIS) determined the encapsulation efficiency. The stability and release of encapsulated compounds was also tested during their storage in controlled conditions. The examined encapsulation parameters affected in different ways the morphology and properties of the structures. Encapsulation efficiency was in the range of 70–90% with EHD presenting the highest values. ATR-FTIR analysis confirmed the presence of REO in the structures. The produced structures offer great potential to be incorporated in greenhouse films to replace agrochemicals.

近年来，在集约化耕作系统中用天然杀虫剂（例如精油）代替危险农用化学品的需求不断增加。香精油是抗菌化合物的来源，具有抗除杂草，病原体和昆虫的潜力。在温室栽培中使用它们似乎很有希望，但是由于其挥发性高，它们的作用很快。当前研究的目的是将精油包封到生物聚合物中以提高其效率并控制其释放。迷迭香的精油使用电液动力学加工（EHD）和挤压将（迷迭香）（REO）封装在玉米蛋白和聚乳酸（PLA）中。通过扫描电子显微镜（SEM），差示扫描量热法（DSC）和衰减全反射FT-IR光谱（ATR-FTIR）评估了各种工艺参数的效果。紫外可见光谱法（UV-VIS）确定了包封效率。在受控条件下储存过程中，还测试了封装化合物的稳定性和释放。检查的封装参数以不同方式影响结构的形态和特性。封装效率在70-90％的范围内，其中EHD表现出最高的值。ATR-FTIR分析证实了结构中存在REO。