高等学校化学学报2012，Vol.33Issue(12)：2617-2622,6.DOI:10.7503/cjcu20120460
银-组氨酸配合物-蒙脱石抗菌剂的制备及抗菌活性
Synthesis and Antibacterial Activity of Silver-histidine Complex Doped Montmorillonite Antibacterial Agent
摘要
Abstract
A novel colorless salt-tolerant silver-histidine complex doped montmorillonite antibacterial agent (SHMMT) powder was synthesized by hydrothermal ion exchange reaction using silver-histidine complex ion [ Ag ( his) ]+ as precursor. The product was characterized by inductively coupled plasma spectrometer (ICP) , powder X-ray diffractometer ( XRD ) and thermogravimetric-differential temperature analyser ( TG-DTA). The antibacterial activity of SHMMT against Pseudoalteromonas carrageenovora was examined by a modified broth dilution test and the plate counting method. The salt-tolerant and slow-releasing properties of SHMMT were tested by sea water soaking method. The results show that the amount of Ag loaded on SHMMT powder reaches 1.7 mmol/g when the molar ratio of silver to histidine equals 1:1, which is much more than the cationic exchange capacity (cec) of Na-MMT. SHMMT powder is pile white and has high bacterial activity. After being soaked in the sea water for 45 d, the bactericidal rate of the SHMMT powder still reaches 80%.关键词
蒙脱石/银-组氨酸配合物/抗菌活性/耐盐性Key words
Montmorillonite/ Silver-histidine complex/ Antibacterial activity/ Salt-tolerant ability分类
化学化工引用本文复制引用
段淑娥,翟云会,屈颖娟,马明阳..银-组氨酸配合物-蒙脱石抗菌剂的制备及抗菌活性[J].高等学校化学学报,2012,33(12):2617-2622,6.基金项目
陕西省自然科学基金(批准号:YF07069)和西安市科技攻关项目(批准号:2007B19)资助. （批准号:YF07069）
