Bacteria cultures

Loosen the caps on the test tubes about half way and place them all in the labeled 250-mL beaker. Place the specimens in a warm location in the classroom. CAUTION Do not touch bacteria cultures. 

J. S. Rocha, M. J. Barbosa, Wijffels (2001) Hydrogen production by photosynthetic bacteria culture media, yields and efficiencies, In Biohydrogen II. J. Miyake, T Matsunaga, A. San Pietro eds. Pergamon, Amsterdam 3-32... 

Typhoid Bacteria Food Poisoning — In 1972, members of a U.S. fascist group called Order of the Rising Sun were found in possession of 30 to 40 kilograms of typhoid bacteria cultures they planned to use to contaminate water supplies in Chicago, St. Louis, and other large Midwestern cities. 

Pieces of DNA, for example genes or cDNA probes, are multiplied using a method based on in vivo replication in bacterial cells. The sequence of DNA is incorporated into a vehicle or vector which transports it into a cell host, usually E. coli. As the bacteria culture grows, the vector also replicates so producing more of the required sequence of DNA. Two of the naturally occurring types of DNA molecule which can be used as vectors are plasmids and viral chromosomes. 

The explanation mainly comes from the fact that the mixture is richer in methanogenic bacteria cultures. 

Svendsen and Jollick (1978) studied the microbes in the castor sacs and anal glands of the beaver, C. canadensis. No bacteria cultured from the castor sacs, while the anal sacs contained the aerobe Escherichia coli and the anaerobe Bacteroidesfragilis. Species and numbers of bacteria did not differ between the sexes, age classes, or beaver colonies. 

This protocol describes a method to amplify the DNA template for in vitro transcription by using PCR instead of bacteria culture see Fig. 1). Because a PCR product can be directly used for in vitro transcription following ethanol precipitation, this method is optimal for a large-scale probe synthesis. 

Cells regulate their lipid composition to achieve a constant membrane fluidity under various growth conditions. For example, bacteria synthesize more unsaturated fatty acids and fewer saturated ones when cultured at low temperatures than when cultured at higher temperatures (Table 11-2). As a result of this adjustment in lipid composition, membranes of bacteria cultured at high or low temperatures have about the same degree of fluidity. 

Sewage wastes contain as much as 4 ppm of vitamin Bi2 (Hoover et al. 1952B Miner and Wolnak 1953). Although frowned on for aesthetic reasons as a source of vitamin Bi2 for human nutrition, wastes from activated sludge processes may well provide the cheapest source for preparation of vitamin Bi2 concentrates used in cattle feed. Symbiotic growth of lactic and acetic acid bacteria has been recommended for producing sour milk products biologically enriched with vitamin Bi2 (Rykshina 1961). Acetic acid bacteria cultured in whey fortified with cobalt salts led to an 80-fold increase in vitamin B12. Propionic acid bacteria in skim milk supplemented with dimethylbenzimidazole increased the vitamin content by 300-fold. 

Fig. 7.2 Colonies of three kinds of bacteria cultured from cells collected from surfaces of the Ti02-coated substrate (right) and Ti02-free substrate (left) illuminated with 14-mW cm-2 UV light for 30 min. Each colony corresponds to one viable cell on the substrate.

After 4 h, the agar tubes were inoculated with 1 pi volumes bacteria cultures prepared earlier, and the agar was immediately poured onto an MH plate. The... 

Bacteria cultured for these tests were Proteus mirabilis, Pseudomonas aeruginosa (59-1244/lux), and Staphylococcus aureus (29213 or ATCCR 25923). Luminescent bacteria are abbreviated as lux. ... 

Many modern pharmaceutical and biological products, e.g. blood derivatives, vaccines, cytostatic drugs, antibiotics, bacteria cultures but also consumer goods such as soluble coffee are freeze-dried to transform perishable substances into a form that can be stored and reconstituted to their almost original stale without loss of quality. 

Stock bacteria cultures are maintained in THY broth plus 20% glycerol at -70°C. 

Clogging by suspended solids, precipitating salts, bacteria cultures, and so on. 

Lengke, M. and Southam, G. 2006. Bio accumulation of gold by sulfate-reducing bacteria cultured in the presence of gold (I)-thiosulfate complex. Geochimica et Cosmochimica Acta, 70 3646-1. 

Biodegradation 95% degradation in 3-6 d in mixed bacteria cultures (Tabak et al. 1964) ... 

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