Molded tofu long black mold can not be eaten. Moldy tofu in the production process needs to go through a long time of fermentation, fermentation process, if you do not control the time, temperature and other factors, there lead to moldy tofu deterioration, bacteria will grow in moldy tofu, in the moldy tofu surface formation of black filaments, appear moldy tofu long black hair. If accidentally eaten this moldy tofu, food poisoning occurs, will make the patient appear diarrhea, abdominal pain and other symptoms.