Research Article

Parrotia persica as a Potential Source of Bioactive Phenolic Compounds: Optimization of Extraction Parameters and Biological Activity Assay

Figure 2

Response surface plot showing the effect of UAE parameters on mass extract and total phenol: (a) solvent-to-feed ratio and time interaction, (b) solvent-to-feed and solvent percent interaction, (c) time and solvent percent interaction, (d) time and solvent percent interaction, (e) time and temperature ratio, and (f) solvent percent and temperature interaction.
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