Das Puja, Nayak Prakash Kumar, Kesavan Radha Krishnan
Department of Food Engineering & Technology, Central Institute of Technology, Deemed to be University, Kokrajhar, Assam, India.
Prep Biochem Biotechnol. 2025 Feb;55(2):171-186. doi: 10.1080/10826068.2024.2378101. Epub 2024 Jul 12.
The extraction of phytocompounds from Achocha () vegetable juice using traditional methods often results in suboptimal yields and efficiency. This study aimed to enhance the extraction process through the application of thermosonication (TS). To achieve this, an artificial neural network (ANN) and a genetic algorithm (GA) were utilized to simulate and optimize the process parameters. The study investigated the influence of ultrasonic amplitude (30%-50%), temperature (30 °C-50 °C), and sonication duration (15-60 min) on total polyphenolic content (TPC), total flavonoid content (TFC), antioxidant activity (AOA), and ascorbic acid content (AA). Remarkably, the ANN-GA optimization resulted in optimal TS conditions: an ultrasonic amplitude of 40%, a temperature of 40 °C, and a sonication duration of 30 min. Subsequent analysis of extraction kinetics and thermodynamics across various temperatures (30 °C-50 °C) and extraction times (0-30 min) demonstrated (0.98821) and χ (1.74773) for TPC with activation energy (E) 26.0456, (0.99906) and χ (0.07215) for TFC with E 26.2336, (0.99867) and χ (0.03003) for AOA with E 26.0987, (0.99731) and χ (0.13719) for AA with E 26.0984, validating the pseudo second-order kinetic model. These findings indicate that increased temperature enhances the saturation concentration and rate constant of phytochemical extraction.
采用传统方法从佛手瓜蔬菜汁中提取植物化合物,其产量和效率往往不尽人意。本研究旨在通过热超声处理(TS)来改进提取工艺。为此,利用人工神经网络(ANN)和遗传算法(GA)对工艺参数进行模拟和优化。该研究考察了超声振幅(30%-50%)、温度(30℃-50℃)和超声处理时间(15-60分钟)对总酚含量(TPC)、总黄酮含量(TFC)、抗氧化活性(AOA)和抗坏血酸含量(AA)的影响。值得注意的是,ANN-GA优化得出了最佳TS条件:超声振幅40%、温度40℃、超声处理时间30分钟。随后对不同温度(30℃-50℃)和提取时间(0-30分钟)下的提取动力学和热力学进行分析,结果表明TPC的R²(0.98821)和χ(1.74773),活化能(E)为26.0456;TFC的R²(0.99906)和χ(0.07215),E为26.2336;AOA的R²(0.99867)和χ(0.03003),E为26.0987;AA的R²(0.99731)和χ(0.13719),E为26.0984,验证了伪二级动力学模型。这些发现表明,温度升高会提高植物化学物质提取的饱和浓度和速率常数。