Food waste is considered a serious global societal problem. How to degrade of food waste in a green and effective way has been to a hot topic. In this work, a method with hot water extraction pretreatment of food waste was investigated and optimized. Under the optimal conditions, more than half of the solid food waste could be transferred to soluble sugars. Meanwhile, in order to improve the tolerance of Rhizopus arrhizus on the food waste hydrolysate, UV combined with chemical mutagenesis were carried out, and a mutant of Rhizopus RH-7-13-807 was obtained. With the mutant strain, the yield of fumaric acid fermented from food waste increased to 1.8 times compared with the original strain, and 23.94 g/L fumaric acid was obtained from the fermentation. Besides, the COD of food waste was evaluated for the degradation of food waste by the Rhizopus RH-7-13-807. The process would decrease the quantity of food waste to be disposed of, and benefit the environment.

食物浪费被认为是严重的全球社会问题。如何以绿色有效的方式降解食物垃圾已成为热门话题。在这项工作中，对热水萃取预处理食物垃圾的方法进行了研究和优化。在最佳条件下，一半以上的固体食物垃圾可以转移到可溶性糖中。同时，为了提高根霉菌对食物残渣水解产物的耐受性，进行了紫外诱变结合化学诱变，并得到了根霉菌的突变体。获得RH-7-13-807。用该突变菌株，从食物垃圾中发酵得到的富马酸的产量是原始菌株的1.8倍，并且从发酵中获得了23.94g / L的富马酸。此外，用根霉菌RH-7-13-807评价了食物垃圾的化学需氧量对食物垃圾的降解。该过程将减少食物垃圾的处理量，并有利于环境。