Oriented fragmentation of Escherichia coli sacculi by sonication

Oriented fragmentation of Escherichia coli sacculi by sonication.

Isolated murein sacculi of Escherichia coli PA3092 were physically ruptured by sonication. Electron microscopical analysis showed that the rupturing occurred preferentially prependicular to the long axis of the cell. The fragmentation of the sacculi increased with longer sonication times. It was found that the extent of cross-linkage was more affected by the sonication than was the average glyc...

Case Report of Meningoencephalitis in Calves Caused by Escherichia coli

Photocatalytic Removal of Escherichia Coli by ZnO Activated by Ultraviolet-C Light from Aqueous Solution

Abstract: Background and objectives: There is a great interest in photocatalytic oxidation of contaminants, using ZnO, in recent years. The main objective of this research was to study photocatalytic disinfection of E. coli bacteria as water microbial pollution index, using nano particles of ZnO and a UV lamp in a batch reactor. Material and Methods: In this study, the contaminated water sample...

Escherichia coli by Betaine

was able to restore colony-forming activity even when chloramphenicol inhibited protein synthesis. Thus, restoration was not the result of cell turnover. The cells were not killed by exposure to 0.8 M NaCl, because during exposure they accumulated ATP intracellularly. Betaine treatment caused this cellular ATP to decrease to a lower level. This work may provide the foundation for a simple plati...

Calcification by Escherichia coli.

Escherichia coli K-12, grown in a synthetic medium containing metastable calcium phosphate, formed intracellular biological apatite crystals.