| abstract |
The invention relates to a method for the concentration of concentrated spent liquors and is used in biotechnology. In the process according to the invention, sulphite waste liquor with a reducing substance content of * the total SO 2 content of which has been reduced by an SO 2 output to 0.05-0.20%, has a p H value of * and a residence time of * H fermented, thereby an increase in the crude protein yield is achieved. yeasting; Total SO2 content, p H value; residence; Yield crude protein} |