Kaveh Mohammad, Zomorodi Shahin, Ghaysari Behnam, El-Mesery Hany S, Sharifian Faroogh, ElMesiry Ahmed H, Salem Ali
Agricultural Engineering Research Department, West Azerbaijan Agricultural and Natural Resources Research and Education Center, AREEO, Urmia, Iran.
Department of Horticulture, Faculty of Agriculture, Urmia University, Urmia, Iran.
Sci Rep. 2025 Mar 18;15(1):9245. doi: 10.1038/s41598-025-94300-x.
The process after harvesting medicinal plants, such as drying, is very important in the production cycle of these plants. The study's objective is to evaluate the effect of different drying methods on some thermodynamic properties, qualitative and bioactive attributes, and yield of rose essential oil in form of a completely randomized design. The treatments of this study included drying in refractance window (RW), infrared (IR), and convective (CV) at three drying temperatures of 50, 60, and 70 °C, as well as fresh plants. The results showed that different drying methods and temperatures significantly affected the essential oil, thermodynamic, qualitative, bioactive, and yield characteristics. The lowest drying time, energy consumption, and the highest energy efficiency and rehydration ratio in the dried rose samples were related to the drying temperature of 70 °C in the RW method. The reduction of drying time by RW method compared to IR and CV methods was between 11.1-21.40 and 45.9-50%, respectively. The highest amount of antioxidant activity, total phenol, flavonoid and essential oil yield was observed in the RW drying method and at the drying temperature of 60 °C. This study showed that compared to other drying methods, the RW method showed a high quality in drying Rose flowers.
药用植物采收后的干燥等处理过程在其生产周期中非常重要。本研究的目的是以完全随机设计的形式评估不同干燥方法对玫瑰精油的某些热力学性质、定性和生物活性属性以及产量的影响。本研究的处理包括在50、60和70°C三个干燥温度下采用折射窗干燥（RW）、红外干燥（IR）和对流干燥（CV），以及新鲜植物。结果表明，不同的干燥方法和温度对精油、热力学、定性、生物活性和产量特性有显著影响。干燥玫瑰样品中最短的干燥时间、最低的能耗以及最高的能源效率和复水率与RW方法中70°C的干燥温度有关。与IR和CV方法相比，RW方法的干燥时间减少分别在11.1 - 21.40%和45.9 - 50%之间。在RW干燥方法和60°C干燥温度下观察到最高的抗氧化活性、总酚、黄酮含量和精油产量。本研究表明，与其他干燥方法相比，RW方法在干燥玫瑰花方面具有较高的质量。
