银杏细胞固定化培养及其影响因素考察

Cell immobilization culture of Ginkgo biloba and determination of their affecting factors

目的 利用银杏细胞固定化培养法生产银杏内酯。方法 以聚胺酯泡沫为固定化材料 ,考察各种因素对固定化银杏细胞培养的影响。结果 用高密度、小孔径聚胺酯材料 P2 9,将其切成 0 .5 cm× 0 .5 cm× 0 .5 cm的小块 ,每瓶加 0 .72 g载体 ,加 6 5 m L 液体培养基 (MS+2 ,4 - D8.0 mg/L+KT0 .0 4 mg/L+NAA0 .4 mg/L) ,接种鲜重2 0 0 g/L,可得到高达 71%的固定化比例 ,载体上细胞密度达到干重 2 2 mg/cm3。结论 以聚胺酯泡沫为固定化材料进行银杏细胞固定化培养具有方法简便、成本低廉、细胞固定化比例高等优点 。

Object To investigate the application of cell immobilization culture to producing ginkgolides in Ginkgo biloba L. Methods To immobilize the cells by polyaminoresin foam as support materials, and determine the effects of different factors. Results The results showed that 71% of immobilization ratio and 22 mg/cm 3 of cell density were obtained using P29 of high density, small bore diameter with pieces of 0.5 cm × 0.5 cm × 0.5 cm, 0.72 g of support matrices per bottle in 65 mL of MS medium solution supplemented with 2,4-D 8.0 mg/L+KT 0.04 mg/L+NAA 0.4 mg/L and the incoulum quantity was 200 g/L. Conclusion It shows that present method has some advantages, such as simpleness, low cost, high immobilization ratio.