Mn<sup>2+</sup>对肠膜状明串珠菌产右旋糖酐的影响

问清江; 慕娟; 孙晓宇; 丁浩

文章摘要

Mn²⁺对肠膜状明串珠菌产右旋糖酐的影响

Effect of Mn²⁺on Leuconstoc mesenteriodes Dextran Production

DOI：doi:10.3969/j.issn.1005-7021.2018.06.007

中文关键词: Mn²⁺ 肠膜状明串珠菌右旋糖酐

英文关键词: Mn²⁺ Leuconstoc mesenteriodes dextran

基金项目:2017年陕西省社发项目（2017SF-315）

作者	单位
问清江	陕西省微生物研究所，陕西西安 710043
慕娟	陕西省微生物研究所，陕西西安 710043
孙晓宇	陕西省微生物研究所，陕西西安 710043
丁浩	陕西省微生物研究所，陕西西安 710043

摘要点击次数: 595

全文下载次数: 100

中文摘要:

肠膜状明串珠菌在其产生的右旋糖酐蔗糖酶的作用下，以蔗糖为原料转化合成右旋糖酐和产生果糖。着重进行了Mn²⁺对肠膜状明串珠菌Lm-1226发酵产右旋糖酐影响的初步探索。对Mn²⁺对肠膜状明串珠菌Lm-1226的生长，产果糖、右旋糖酐和右旋糖酐蔗糖酶，右旋糖酐蔗糖酶作用影响进行了研究。一定浓度的Mn²⁺对肠膜状明串珠菌Lm-1226的生长具有促进作用；Mn²⁺抑制肠膜状明串珠菌Lm-1226发酵产果糖和右旋糖酐，且Mn²⁺浓度越高，抑制性越强；Mn²⁺对肠膜状明串珠菌Lm-1226发酵产右旋糖酐蔗糖酶有抑制作用；Mn²⁺对右旋糖酐蔗糖酶具有较强的激活作用，激活作用可达158%，最适Mn²⁺浓度为5.0 mmol/L。

英文摘要:

Affected by dextransucrase produced by Leuconstoc mesenteriodes inverted sucrose as raw material into dextran and produced fructose. This research focuses on the effect of Mn²⁺ on L. mesenteriodes and initial probe the effects on the fermentation and the production of dextran. And carry out the study on the effect of Mn²⁺ on L. mesenteriodes Lm-1226 growth, fructose, and dextran production, as well as the effect on dextransucrase reaction. A certain concentration of Mn²⁺ could enhance the growth of L. mesenteriodes Lm-1226: Mn²⁺ inhibited L. mesenteriodes Lm-1226 fermentation to produce fructose and dextran, and this inhibitory effect was stronger as Mn²⁺concentration higher. Mn²⁺ inhibited L. mesenteriodes Lm-1226 to produce dextransucrase. However, Mn²⁺ possessed fairly strong dextransucrase activation, and this activation effect could reach up to 158%. The optimal concentration of Mn²⁺ was at 5.0 mmol/L.

查看全文查看/发表评论下载PDF阅读器

关闭