Method for recovering waste liquid generated by extracting quercetin from sophora flower buds to produce spinosad

The invention provides a method for recovering waste liquid generated by extracting quercetin from sophora flower buds to produce spinosad. The method comprises the following steps: preparing the waste liquid generated by extracting quercetin from sophora flower buds to obtain a liquid culture medium; saccharopolyspora spinosa is inoculated into the liquid culture medium for fermentation, and spinosad is obtained after fermentation is finished. According to the method provided by the invention, waste liquid generated by extracting quercetin from sophora flower buds can be fully utilized, resources are saved, wastewater discharge is reduced, spinosad can be produced, and the production cost of spinosad is reduced. 本发明提供一种槐米提取槲皮素产生的废弃液回收生产多杀菌素的方法，所述方法包括：将所述槐米提取槲皮素产生的废弃液配置得到液体培养基；在所述液体培养基中接种刺糖多孢菌进行发酵，发酵结束后得到多杀菌素。根据本发明提供的方法，不仅能够充分利用槐米提取槲皮素产生的废弃液，节约资源的同时减少了废水排放，而且还能生产得到多杀菌素，降低多杀菌素的生产成本。