Levels of microorganisms

Turbidity n/a Tt3 Turbidity, a measure of water cloudiness, is used to indicate water quality and filtration effectiveness (e.g., whether disease-causing organisms are present). Higher turbidity is associated with higher levels of microorganisms such as viruses, parasites and some bacteria. These organisms can cause symptoms such as nausea, cramps, diarrhea, and associated headaches. Soil runoff... 

Studies indicated that identification of spoiled seafood products by sensory evaluation is due to detection of putrefied odor associated with spoilage (8). Rapid detection of spoilage with sensory evaluation results from microbial action due temperature abuse or high initial levels of microorganisms (9). 

An action level in microbiological environmental monitoring is the level of microorganisms that, when exceeded, requires immediate follow-up and, if necessary, corrective action. The evaluation does not depend on the number of colonies only but also on the types of microbes isolated and the suspected hazard. 

There are inherent limitations and testing for low levels of microorganisms, especially when only a limited portion of a whole population is analyzed. Limited or small sample volumes may not provide representative data, but a large number of samples may... 

The growth-promoting ability of the medium in the final filled containers should be demonstrated using filled control containers challenged with low levels of microorganisms. 

Increased sampling in a effort to detect the already low levels of microorganisms is unlikely to be successful and can actually put the product at risk by increasing personnel incursions into the sterile field. 

Disinfectants Chemical agents or formulations that are too irritant or toxic on body surfaces, but are used to reduce the level of microorganisms from the surface of inanimate objects to one that is safe for a defined purpose. 

Water treatment plants employ both primary and secondary disinfection (a) Primary disinfection achieves the desired level of microorganism kill or inactivation and (b) secondary disinfection ensures a stable residual concentration of disinfectant in the finished water to prevent microbial growth in the distribution system (4,7,14,17,18). 

Unlike mammalian cells, which cannot synthesize all amino acids, SILAC is not well suited to studying the protein/peptide levels of microorganisms, most of which are prototrophic for all amino acids. Application of SILAC in such cases is mostly restricted to auxotrophic strains, which renders the technique ineffective for the proteome analysis of many commercially important microbes. Native SILAC (nSILAC), a recently developed modification of... 

Starting materials especially for large volume parenterals should not contain significant levels of microorganisms or pyrogenic material. The material... 

OST 59.01.003.48-85 Sector Labour Safety Standards. Air Quality of the Workplace. Acceptable levels of microorganisms used for controlling agricultural pests. Methods of monitoring... 

Bioaugmentation Form of bioremediation that involves increasing the number or activity level of microorganisms that assist in pollutant reduction. 

Standard Plate Coimt (SPC) Test for detecting the level of microorganisms in food. 

Microbioassay. A microbioassay is a microbiological determination method mainly used for biochemicals. The amounts of chemicals are measured based on the growth levels of microorganisms. Chemicals support or inhibit their growth. 

Biocides are designed to protect uncontaminated products from occasional microbial contamination and, at typical use concentrations, most preservatives are not able to withstand continual repeated challenges of high levels of microorganisms. In such situations, the biocide may be consumed and the product will no longer be protected from subsequent microbial infection. 

In the industrial or domestic waste treatment plants, waste collectors are the most exposed to variety of dusts. Measures realized show high levels of microorganisms and vegetable or animal dusts, despite ventilation systems. 

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