对虾养殖池塘底泥中不仅含有微囊藻毒素也含有可以降解微囊藻毒素的微生物，

对虾养殖池塘底泥中不仅含有微囊藻毒素也含有可以降解微囊藻毒素的微生物，微生物去除MCs具有成本低、安全性强以及利于生态修复等优点，是一种去除MCs很有前途的方法[14]。本试验主要研究在实验室条件下，通过对微囊藻毒素进行分离提纯，获得足够数量的微囊藻毒素，用来配置以微囊藻毒素作为底泥微生物生长的碳源和氮源的选择性培养基，筛选出可以降解微囊藻毒素的底泥微生物。通过改变微生物生长时的外界环境，研究底泥微生物在好氧情况下对初始浓度为1.035的MC-LR的降解性能影响，通过测量96h内MC-LR的降解率，直观的了解到在好氧环境下底泥微生物的降解性能。在本次试验中，发现随着时间的增长，MC-LR的降解率逐渐升高，在96h时达到了14.49%。本次试验结果表明，底泥微生物对微囊藻毒素具有较强的好氧降解能力。

对虾养殖池塘底泥中不仅含有微囊藻毒素也含有可以降解微囊藻毒素的微生物，微生物去除MCs具有成本低、安全性强以及利于生态修复等优点，是一种去除MCs很有前途的方法[14]。 本试验主要研究在实验室条件下，通过对微囊藻毒素进行分离提纯，获得足够数量的微囊藻毒素，用来配置以微囊藻毒素作为底泥微生物生长的碳源和氮源的选择性培养基，筛选出可以降解微囊藻毒素的底泥微生物。 通过改变微生物生长时的外界环境，研究底泥微生物在好氧情况下对初始浓度为1.035的MC-LR的降解性能影响，通过测量96h内MC-LR的降解率，直观的了解到在好氧环境下底泥微生物的降解性能。 在本次试验中，发现随着时间的增长，MC-LR的降解率逐渐升高，在96h时达到了14.49%。 本次试验结果表明，底泥微生物对微囊藻毒素具有较强的好氧降解能力。

The bottom mud of shrimp culture pond contains not only microcystin but also microorganisms that can degrade microcystin. The removal of MCS by microorganisms has the advantages of low cost, strong safety and ecological restoration. It is a promising method to remove MCS [14]. In this experiment, we studied the purification of microcystins in laboratory, and obtained enough microcystins. They were used to configure selective medium for the growth of carbon and nitrogen sources, and then screened out the bottom microorganism which can degrade microcystin. The degradation performance of the sediment microorganism under aerobic condition was studied by changing the external environment of the microorganism growth, and the degradation performance of MC LR with initial concentration of 1.035 was studied. The degradation rate of MC LR in 96h was measured, and the degradation performance of the bottom mud microorganism was directly understood under aerobic environment. In this experiment, it was found that the degradation rate of MC LR increased gradually with the increase of time, reaching 14.49% at 96h. The results showed that the microorganism in the sediment had a strong aerobic degradation ability to microcystin.<br>