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Application of Fecal Escherichia coli Online Analyzer in Food Production and Processing
Date: 2025-09-14Read: 0
Fecal Escherichia coli is a common bacterium widely present in the intestines of humans and animals, and is also one of the most commonly detected microorganisms in water quality monitoring. It is not only an important indicator of water pollution and gastrointestinal diseases, but also can be used to evaluate the effectiveness of water treatment processes. Therefore, real-time online monitoring of the concentration of fecal Escherichia coli in water bodies is of great significance. The fecal Escherichia coli online analyzer is a key equipment used for this purpose. It automatically monitors the real-time number of fecal Escherichia coli in water quality, providing data support for environmental protection and public health safety.
Fecal Escherichia coli online analyzerWorking principle:
1. Immunoassay (ELISA)
Immunoassay utilizes the specific binding of antigens and antibodies to detect the concentration of fecal Escherichia coli in water. The analyzer selectively captures some characteristic antigens on the surface of fecal Escherichia coli and reacts with specialized antibodies to achieve quantitative analysis of bacteria. Immunoassay has high sensitivity and short detection cycle, but its equipment cost is high and it has certain requirements for the operating environment.
2. Molecular Biology Techniques (PCR)
Polymerase chain reaction (PCR) technology detects fecal Escherichia coli by amplifying specific gene sequences. The advantage of PCR method is that it can detect trace amounts of fecal Escherichia coli in a relatively short period of time, and has high sensitivity and specificity. However, PCR equipment is relatively expensive and usually requires professional personnel to operate.
3. Optical sensing technology
Optical sensing technology is based on optical effects such as scattering, absorption, and fluorescence to detect the concentration of bacteria in water. By analyzing the reflection, absorption, or scattering characteristics of bacteria in water samples, the instrument can calculate the real-time number of fecal Escherichia coli in water. The advantages of optical sensing methods are fast, label free, and highly automated, making them suitable for online monitoring, but their sensitivity may not be as good as molecular biology methods.
4. Electrochemical sensors
Electrochemical sensors detect fecal Escherichia coli by monitoring changes in current or voltage generated during bacterial metabolism in water. This method can achieve real-time monitoring, with simple operation and relatively inexpensive equipment. Electrochemical sensors have been widely used in some small-scale water treatment facilities.
Application areas of fecal Escherichia coli online analyzer:
1. Water treatment industry
Widely used in the treatment process of drinking water, sewage, and industrial wastewater. It can monitor changes in water quality in real time, ensuring the effectiveness of treatment processes and the safety of water quality. Through online monitoring, operators can take timely measures in case of water pollution to prevent further spread of pollutants.
2. Environmental monitoring
The presence of fecal Escherichia coli is an important indicator for evaluating water pollution, especially in natural water bodies such as rivers, lakes, and oceans. Online analyzers can be used for long-term monitoring of water bodies and tracing of pollution sources, helping environmental protection departments develop reasonable water quality protection measures.
3. Food safety monitoring
In the field of food production and processing, especially in the catering and aquaculture industries, the hygiene and safety of water quality are crucial for product quality. Real time detection of microbial contamination in water sources to ensure that the water sources used in food processing meet safety standards.
4. Scientific research and laboratory analysis
It is also widely used in scientific research institutions and laboratories for water quality monitoring, microbial analysis, and related academic research. Researchers can use this device to collect long-term water quality data, providing scientific basis for environmental protection and public health.