Department of Chemical Engineering, Vishwakarma Institute of Technology, 666, Upper Indira Nagar, Pune 411037, India.
Department of Chemical Engineering, Sinhgad College of Engineering, Vadgaon (BK), Pune 411041, India.
Ultrason Sonochem. 2017 Sep;38:437-445. doi: 10.1016/j.ultsonch.2017.03.040. Epub 2017 Mar 22.
Curcumin, a dietary phytochemical, has been extracted from rhizomes of Curcuma amada using ultrasound assisted extraction (UAE) and the results compared with the conventional extraction approach to establish the process intensification benefits. The effect of operating parameters such as type of solvent, extraction time, extraction temperature, solid to solvent ratio, particle size and ultrasonic power on the extraction yield have been investigated in details for the approach UAE. The maximum extraction yield as 72% was obtained in 1h under optimized conditions of 35°C temperature, solid to solvent ratio of 1:25, particle size of 0.09mm, ultrasonic power of 250W and ultrasound frequency of 22kHz with ethanol as the solvent. The obtained yield was significantly higher as compared to the batch extraction where only about 62% yield was achieved in 8h of treatment. Peleg's model was used to describe the kinetics of UAE and the model showed a good agreement with the experimental results. Overall, ultrasound has been established to be a green process for extraction of curcumin with benefits of reduction in time as compared to batch extraction and the operating temperature as compared to Soxhlet extraction.
姜黄素是一种膳食植物化学物质，已从莪术根茎中通过超声辅助提取（UAE）进行提取，并将结果与常规提取方法进行比较，以确定工艺强化的益处。详细研究了操作参数（例如溶剂类型、提取时间、提取温度、固液比、粒径和超声功率）对 UAE 方法提取产率的影响。在最佳条件下（温度为 35°C、固液比为 1:25、粒径为 0.09mm、超声功率为 250W 和超声频率为 22kHz），用乙醇作为溶剂，1h 内可获得 72%的最大提取产率。与批次提取相比，这一结果有显著提高，在 8 小时的处理时间内，批次提取仅获得约 62%的产率。Peleg 模型用于描述 UAE 的动力学，该模型与实验结果吻合较好。总的来说，与批次提取相比，超声提取时间更短，与索氏提取相比，操作温度更低，已被确立为提取姜黄素的绿色工艺。
