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培养条件对一株嗜酸乳杆菌突变株亚油酸异构酶活力的影响
EFFECT OF CULTURE CONDITION ON LINOLEATE ISOMERASE ACTIVITIES OF A LACTOBACILLUS ACIDOPHILUS MUTANT
【摘要】 对一株嗜酸乳杆菌突变株产亚油酸异构酶的条件进行了研究,得到最佳产酶条件为:以脱脂乳作为培养基,添加3%的乳糖、1%的(NH4)2SO4、0 1%的亚油酸及1%的NaCl,接种量为1%,培养时间为36h.在此条件下,所合成的亚油酸异构酶活力达252 0U/mL.
【Abstract】 The condition of a lactobacillus acidophilus Mutant to synthesize linoleic isomerase was studied. The optimum conditions were as fellows: the proper medium was skim milk, with addition of 1%(V/V) lactose, 1%((W/V)) (NH4)2SO4, 0.1%(V/V) linoleic acid and 1%(W/V) NaCl. The inoculum volume was 1%(V/V), and the cultivation period was 36 hrs. Linoleate isomerase activity reached 252.0U·mL under such condition.
【关键词】 嗜酸乳杆菌;
亚油酸异构酶;
产酶条件;
【Key words】 lactobacillus acidophilus; linoleate isomerase; culture condition;
【Key words】 lactobacillus acidophilus; linoleate isomerase; culture condition;
【基金】 河南省杰出青年基金项目(04120001800);河南省科技厅科技攻关项目(001090126)
- 【文献出处】 郑州工程学院学报 ,Journal of Zhengzhou Institute of Technology , 编辑部邮箱 ,2003年04期
- 【分类号】Q935
- 【被引频次】4
- 【下载频次】98