| Title | Optimization of High-Pressure Extraction Process of Antioxidant Compounds fromFeteasca regalaLeaves Using Response Surface Methodology |
|---|---|
| ID_Doc | 13413 |
| Authors | Becze, A; Babalau-Fuss, VL; Varaticeanu, C; Roman, C |
| Title | Optimization of High-Pressure Extraction Process of Antioxidant Compounds fromFeteasca regalaLeaves Using Response Surface Methodology |
| Year | 2020 |
| Published | Molecules, 25, 18 |
| Abstract | Circular economy principles are based on the use of by-products from one operation as the raw materials in another. The aim of this work is to obtain extracts with high antioxidant capacity and resveratrol content for the superior capitalization of the biomass ofFeteasca regalaleaves obtained during vineyard horticultural operations in spring. In order to obtain a high-quality extract at an industrial level, an optimal extraction process is needed. Central composite design (CCD) was used for the experiment design, which contained three independent variables: the ratio of extraction solvent to solid matter, temperature (degrees C) and time (minutes). The evaluation of extracts was done by measuring the total antioxidant capacity of the extracts using photo-chemiluminescent techniques, and the resveratrol content using liquid chromatography. Process optimization was done using response surface methodology (RSM). Minitab software version 17.0 was used for the design of experiments and data analysis. Regression analysis showed that the model predicts 87.5% of the variation for resveratrol and 96% for total antioxidant capacity (TAC). The temperature had the biggest influence on the extraction yield. The optimal operational conditions for the extraction method applied had the following conditions: ratio e/m 2.92; 43.23 degrees C and 55.4 min. A maximum value of 34,623 mu g ascorbic acid equivalent (AAE) /mL total antioxidant capacity and 182.4 mu g/mL resveratrol content were obtained when the optimal extraction parameters where used. The values obtained in experiments proved that by using RSM an accurate model can be obtained for extraction ofFeteasca regalaleaves. |
| https://www.mdpi.com/1420-3049/25/18/4209/pdf?version=1600516077 |
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