Face-Centered Central Composite Design for the Optimization of the Extraction of Phenolic Compounds from Kernels and Shells of <i>Raphia farinifera</i> and Evaluation of the Antioxidant, Antimicrobial, and Anti-Inflammatory Activities

<div>3D response surface plots for the total polyphenol content of the extract from the shell of <i>Raphia farinifera</i> (mg EAG/L). (a) Effect of solvent/powder ratio, time (min), and their interaction on the total polyphenol content. (b) Effect of ethanol percentage, time (min), and their interaction on the total polyphenol content. (c) Effect of solvent/powder ratio (g/mL), ethanol percentage (%), and their interaction on the total polyphenol content.</div>

Journal of Food Processing and Preservation

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Figure 4

Figure 4: Face-Centered Central Composite Design for the Optimization of the Extraction of Phenolic Compounds from Kernels and Shells of <i>Raphia farinifera</i> and Evaluation of the Antioxidant, Antimicrobial, and Anti-Inflammatory Activities 

Figure 4 | Face-Centered Central Composite Design for the Optimization of the Extraction of Phenolic Compounds from Kernels and Shells of Raphia farinifera and Evaluation of the Antioxidant, Antimicrobial, and Anti-Inflammatory Activities 