Among them , the strain a has the highest activity and the fucoidanase activity is as high as 3 . 68u . after the thalli and colony features are analyzed , the strain a is identified to be erysipelothrix rosenbach according to bergey ' s manual of determinative bacteriology 通过对该菌株a个体形态，菌落形态及生理生化特征的分析，依据《伯杰氏细菌鉴定手册》 ，暂确定其归属于丹毒丝菌属( erysipelothrixrosenbach ) 。
