The PS yields of types 6B, 18C, 19F and 23F were 112 mg/L, 123 mg/L, 115 mg/L and 103 mg/L separatively, which had 1.5-fold increase in yield as compared with those described in the published patent[Yavordios and Cousin(1983) European Patent 0 071515 A1].

• 立瓶培养的6B、18C、19F及23F荚膜多糖产量分别达112mg/L、123mg/L、115mg/L及103mg/L；这些数据均高于欧洲专利Yavordios所述72mg/L的产量.