Keywords Phaffia rhodozyma;astaxanthin;derivative ratio spectra;high performance liquid chromatography;extraction;mutagenesis;media optimization;fermentation condition;fed-batch cultivation;

• 法夫酵母;虾青素;比光谱导数;液相色谱;提取;诱变育种;培养基优化;发酵条件;分批补料发酵;