Therefore, the ethyl acetate is the optimal extracting solvent to distill the active compounds from Helianthus tuberosus leaves. 4.

• 菊芋叶片乙酸乙酯提取物对四种病原真菌抑制效果最为显著，因此乙酸乙酯是菊芋叶片中抑菌活性物质的最佳提取溶剂。