In this study, the microwave-assisted processing of Sesamum indicum leaves was intensified to predict the total alkaloid content via Taguchi orthogonal design and neural network model. Under the optimum microwave condition, the maximized alkaloid content was estimated to be 15.40 (mg/g) % using irradiation time (A) of 60 sec, microwave power (B) of 300 W, oven temperature (C) of 60°C, the mass ratio (D) of 12.5 g/ml, and solvent concentration (E) of 80%. The significant effects of each microwave extraction parameter declined in the order listed: C > B > A > D > E which indicated a 31 and 29% contribution of microwave power and oven temperature, respectively. Moreover, higher coefficients of determination (R2 = 0.9999), and a decreased mean square error (MSE) of 2.69E-07 suggest good accuracy in predicting total bioactive alkaloid recovery, as proven by cross-validation trials. Under these microwave conditions, a total of 115 alkaloids were tentatively identified with lindelofine (m/z = 308.18) and supinin (m/z = 306.17) being the most abundant pyrrolizidine alkaloids. Novelty impact statement Although many researchers reported the total alkaloids recoveries from different parts of Sesame plant; the process intensification of microwave processing from leafy parts using Taguchi design and ANN approach have not been investigated. This study established an optimum condition for the total recovery of alkaloid content from S. indicum using orthogonal optimization methodology and artificial neural network 

Investigating the Microwave Parameters Correlating Effects on Total Recovery of Bioactive Alkaloids from Sesame Leaves using Orthogonal Matrix and Artificial Neural Network Integration

Optimization of ultrasound procedure for the sustainable production of oil from plum seeds

Economic evaluation of the production of oil extracted from pressed sesame seed cake using supercritical CO2 in Thailand

Chemical characterization of gurguéia nut (Dipteryx lacunifera Ducke) and press cake oil obtained by hydraulic pressing and supercritical extraction

Growing consumer interest in healthy foods has led to an increased demand for bioactive compounds derived from eco-technologies. This review highlighted two emerging technologies, pressurized liquid extraction (PLE) and supercritical fluid extraction (SFE), which are based on clean processes aimed at recovering bioactive compounds from different food sources. We studied how the different processing conditions provide many advantages and a great opportunity to obtain compounds with antioxidant, antibacterial, antiviral, or antifungal activity from plant matrices and industrial biowaste, especially antioxidant compounds (anthocyanins and polyphenols) due to their important role in health promotion. Our research was conducted through a systematic search in different scientific databases related to the PLE and SFE topics. The review analyzed the optimal extraction conditions using these technologies, which lead to the efficient extraction of bioactive compounds, the use of different equipment, and recent combinations of SFE and PLE with other emerging technologies. This has given rise to the development of new technological innovations, new commercial applications, and the detailed recovery of various bioactive compounds extracted from different plant and marine life food matrices. These two environmentally friendly methodologies are fully valid and have great future application prospects in biowaste valorization. They represent a feasible technological tool that can promote the implementation of a circular economy model for the food industry. The underlying mechanisms of these techniques were discussed in detail and supported by current literature.

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New Trends in Supercritical Fluid Technology and Pressurized Liquids for the Extraction and Recovery of Bioactive Compounds from Agro-Industrial and Marine Food Waste

Kritika Buranachokpaisan

Papers

Supercritical CO2 extraction of residual oil from pressed sesame seed cake: Optimization and its physicochemical properties

Economic evaluation of the production of oil extracted from pressed sesame seed cake using supercritical CO2 in Thailand

Evaluation of Encapsulation of Residual Oil from Pressed Sesame Seed Cake by Coacervation and Subsequent Spray- and Freeze-Drying Method