Optimization of Ultrasound-Assisted Extraction of Total Flavonoids from Dendranthema indicum var. aromaticum by Response Surface Methodology
Response surface plots for TF extraction rate affected by (a) solid/liquid ratio and extraction time (extraction temperature was set at 50°C), (b) extraction temperature and time (solid/liquid ratio was set at 1 : 20), and (c) extraction temperature and solid/liquid ratio (extraction time was set at 20 min).
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