摘要
通过分析超细纤维水镁石的主要化学成分,测定其与大肠杆菌ATCC25922相互作用不同时间后,菌落数、培养基pH值、葡萄糖(GLU)、β-半乳糖酸苷酶以及Mg2+等的变化,来研究其相互作用影响.同时做SEM分析,对水镁石短纤维与细菌的作用过程中细菌形态和界面作用情况进行研究以观察超细水镁石粉体对大肠杆菌生长过程的影响.实验结果表明:试验条件下超细水镁石对大肠杆菌的生长有明显促进作用,其中菌落数和β-半乳糖酸苷酶最大是细菌对照管的2倍和5倍左右,同时粉体中Mg2+的溶出量相对与粉尘对照管增加2倍～3倍,适量浓度的超细水镁石粉体对大肠杆菌的生长代谢有明显的促进作用.
This paper mainly studies the effect of ultrafine brucite powders on the growth progress of E coli by analysing major chemical composition of ultrafine brucite mineral powders and determining the changes of number of colony ,pH ,glucose（GLU） ,β-galactosidase ,Mg^2＋ after the powders acted with E coli ATCC25922 at different time. At the same time,through scanning electron microscope analysis, the bacterial form and interface action in the action process of brucite short fibrous powders and bacteria was studied. There is a obvious promote effect of ultrafine brucite on the growth of E coli. Most values of number of colony and β-galactosidase attained about 2 times and 5 times relative to the bacterial control tube. The dissolution quantity of Mg^2＋ has also increased 2-3 times relative to the dust control tube from the powder. The proper concentration of ultrafine brucite powders have obvious promote effect to the metabolism of E coli. This paper that discussed the effect of ultrafine brucite powders on the growth progress of E coll. It provides some references for further research of the cross deciplines of mineralogy,microbiology,chemistry and environmental science.
出处
《矿物岩石》
CAS
CSCD
北大核心
2005年第3期137-140,共4页
Mineralogy and Petrology
基金
国家自然科学基金资助项目(编号:40072020)
四川省杰出青年基金项目
教育部优秀青年教师奖资助项目
