Figure 1. Chemical structure of podophyllotoxin.
Figure 2. Podophyllotoxin calibration curve using HPLC. Each value is the mean of three replications.
Figure 3. Comparison of podophyllotoxin values extracted by different methods. FW, fresh weight.
Figure 4. Influence of methanol concentration on podophyllotoxin extraction.
Figure 5. Effect of the time of sonication on podophyllotoxin extraction.
Figure 6. Influence of extraction time on podophyllotoxin extraction.
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