Abstract: Yeast with fast growth rate and easy commercial process has been selected as the test strain. It used molasses as theculture medium.Through fermentation technology,both the pilot test of 3m3 fermentation tank and the process test of 12m3fermentation tank were performed. At the end of fermentation,the iron content of high-iron nutrient yeast was 1061.00mg/kg andprotein content over 51.90%(w/v).The yield of high-iron nutrient yeast was 2.54%(w/v). Scientific process parameters wereobtained.The nutrient value of high-iron nutrient used as food additive was discussed.

Key words: high-iron nutrient yeast, molasses, trace element