Fig. 5From: Bioconversion of sago processing wastewater into biodiesel: Optimization of lipid production by an oleaginous yeast, Candida tropicalis ASY2 and its transesterification process using response surface methodology3D surface plots for the response lipid content of C. tropicalis ASY2 grown in ALB. a Effect of starch vs. yeast extract; b Effect of starch vs. airflow rate; c Effect of yeast extract vs. airflow rate. The interactive effect is represented with the color ranging from blue to red (blue, green, red); blue is least significant, green is moderately significant, and red is highly significantBack to article page