亚硝基胍与紫外线复合诱变选育高产r乳糖酶菌株的研究

摘要

以本公司菌种保藏室的产乳糖酶米曲霉菌株AJ2010作为出发菌株,经过亚硝基胍与紫外线复合诱变,选育出一株高产的乳糖酶菌株ZW-003,连续传代培养后产乳糖酶活力性能稳定.根据试验结果,其活力较出发菌株提高62.1%.结论:通过紫外线和亚硝基胍复合诱变获得一株遗传稳定性良好的高产乳糖酶菌株ZW-003.%With the strain for the production of lactase AJ2010 isolated in the company culture collection chamber as the original strain, by UV/NTG mutagenesis, A high yield lactase strain ZW-003 was selected, The activity of lactase after continuous culture was stable. According to the test results, increasing by 62.1% compared with the original. Conclusion: A high yield lactase strain stable genetic characteristics was obtained via UV/NTG mutagenesis.