离子注入改良维生素C二步发酵混合菌研究(Ⅰ)2-酮基-L-古龙酸高产菌系IPPM-1028的选育

Improvement of Mingle Strains in the Fermentation of 2 Keto L Gulonic Acid——Precursor of Vc by Ion Implantation

利用离子注入技术选育出２－酮基－Ｌ－古龙酸高产菌系ＩＰＰＭ－１０２８，其转化率较出发菌Ｍ－２９８０提高１８．８％。经传代实验证明，其遗传性状较为稳定，４代平均转化率可达９５．０％。

Strain IPPM 1028 high yielding 2 Keto L Gulonic acid was screened by the technology of ion implantation.The convertion rate was increased by 18.8% compared with that of strain M 2980.Its genetic quality was proved stable by experiments.The average convertion rate of four generations was 95.0%.