Fig. 1From: Optimization of microwave-assisted extraction of zerumbone from Zingiber zerumbet L. rhizome and evaluation of antiproliferative activity of optimized extractsResponse surface analysis for the zerumbone content from Z. zerumbet rhizome with microwave extraction with respect to ethanol concentration and microwave power (a); ethanol concentration and extraction/irradiation time (b); ethanol concentration and solvent-to-solid ratio (c); extraction/irradiation time and microwave power (d); microwave power and solvent-to-solid ratio (e); extraction/irradiation time and solvent-to-solid ratio (f)Back to article page