Kaveh Mohammad, Sharifian Faroogh, Khalife Esmail, Keramat Sasan, Ghaysari Behnam, Dolatkhoh Mahya, Jadidi Faezeh
Department of Petroleum Engineering, College of Engineering, Knowledge University, Erbil, Iraq.
Department of Mechanical Engineering of Biosystems, Faculty of Agriculture, Urmia University, Urmia, Iran.
Sci Rep. 2025 Aug 26;15(1):31327. doi: 10.1038/s41598-025-15820-0.
This study evaluates the impact of ultrasound (US), ethanol (ET), and combined ultrasound-ethanol (ET/US) pretreatments on the drying efficiency and quality of Rosa damascena petals during hot air drying. All pretreatments significantly reduced the drying time and specific energy consumption (p < 0.05). The highest reduction in drying time (52.38%) and specific energy consumption (64%) was observed for the ET/US pretreatment. Ultrasound alone (US30) and in combination with ethanol (ET/US) significantly improved rehydration ability and essential oil yield (up to 1.31%, p < 0.05). Furthermore, the ET/US treatment preserved more antioxidant activity, total phenolic content, and flavonoid content compared to other pretreatments and control (p < 0.05). The results of this study can show new perspectives for using the potential of ethanol- ultrasound as a cost-effective and energy-efficient method for industrial drying sensitive medicinal plants. Future studies could explore its scalability and applicability to other aromatic or perishable botanical species.
本研究评估了超声（US）、乙醇（ET）以及超声 - 乙醇联合（ET/US）预处理对大马士革玫瑰花瓣热风干燥过程中干燥效率和品质的影响。所有预处理均显著缩短了干燥时间并降低了比能耗（p < 0.05）。对于ET/US预处理，干燥时间缩短幅度最大（52.38%），比能耗降低幅度最大（64%）。单独超声处理（US30）以及超声与乙醇联合处理（ET/US）显著提高了复水能力和精油产量（提高至1.31%，p < 0.05）。此外，与其他预处理和对照组相比，ET/US处理保留了更多的抗氧化活性、总酚含量和黄酮含量（p < 0.05）。本研究结果可为利用乙醇 - 超声作为一种经济高效的方法干燥敏感药用植物提供新的视角。未来的研究可以探索其可扩展性以及对其他芳香或易腐植物物种的适用性。
