Bacterial removal

Bacterial cellulose Bacterial leaching Bacterial removal Bacteria, luminous Bactericide... 

Methods to Detect and Quantitate Viral Agents in Fluids. In order to assess the effectiveness of membrane filtration the abihty to quantitate the amount of vims present pre- and post-filtration is critical. There are a number of techniques used. The method of choice for filter challenge studies is the plaque assay which utilizes the formation of plaques, localized areas in the cell monolayer where cell death caused by viral infection in the cell has occurred on the cell monolayer. Each plaque represents the presence of a single infectious vims. Vims quantity in a sample can be determined by serial dilution until the number of plaques can be accurately counted. The effectiveness of viral removal may be determined, as in the case of bacterial removal, by comparing the vims concentration in the input suspension to the concentration of vims in the effluent. 

Bacterial removal of sterol side chains is carried out by a stepwise P-oxidation, whereas the degradation of the perhydrocyclopentanophenanthrene nucleus is prevented by metaboHc inhibitors (54), chemical modification of the nucleus (55), or the use of bacterial mutants (11,56). P-Sitosterol [83-46-5] (10), a plant sterol, has been used as a raw material for the preparation of 4-androstene-3,17-dione [63-05-8] (13) and related compounds using selected mutants of the P-sitosterol-degrading bacteria (57) (Fig. 2). 

Hansen, C. L., G. Zwolinski, D. Martin, and J. W. Williams. 1984. Bacterial removal of mercury from sewage. Biotech. Bioeng. 26 1330-1333. 

Bacterial removal -by filtration [MICROBIAL AND VIRAL FILTRATION] (Supplement)... 

Pall, D. B., Kirnbauer, E. A. Bacterial removal prediction in membrane filters. Proceedings of 52nd Colloid and Surface Science Symposium, University of Tennessee, Knoxville, June 12, 1980. 

Cold sterilization of beer using microfiltration was introduced on a commercial scale in 1963. The process was not generally accepted at that time, but has recently become more common. Sterilization of beer and wine is much less stringent than pharmaceutical sterilization. The main objective is to remove yeast cells, which are quite large, so the product is clear and bright. Bacterial removal is also desirable a 106 reduction in bacteria is equivalent to the best depth filters. The industry has found that 1-p.m filters can remove essentially all the yeast as well as provide a 106 reduction in the common bacteria found in beer and wine. Because the cost structure of beer and wine production is very different from that... 

Andrews, G.F., Maczuga, J. 1984. Bacterial Removal of Pyrite From Coal, Fuel 63, 297-301. 

The above argument must be discussed further from the viewpoint of bacterial removal [12]. The 5th and 6th columns in Table 2 are the values of and ti2 for the bacterial removal efficiencies with respect to the sludge settling operations. 

The reason for this good performance of the sludge could be attributed to the ramification of the floe surface due to the specific protozoa, whereas the poor performance of the swimming type especially in terms of the bacterial removal in settling might be ascribed to a less possibility of entrapping the bacteria due to the free swimming... 

Santana FC, Empis J (2001) Bacterial removal of quinolizidine alkaloids liom Lupinus albus... 

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