What are the different methods of detection of bacteria?
Detection of bacteria is important in many industries for protecting food, air and water from contamination or to identify a source of infection in the medical environment. Traditional methods of detection of bacteria, such as the collection of culture, are effective, but it may take hours or days for the results to occur and most types of bacteria may be missing. There are newer and faster methods of developed bacteria detection to streamline the process and increase the degree of detection. Some include polymerase chain reaction (PCR), infrared devices that detect bacteria in food, and rapid scanning that detect bacterial contamination in platelet. Many of these methods detect bacteria by measuring oxygen levels or slight electrical disorders that indicate the presence of bacteria. This method is commonly used in medical environments in which blood plates are placed.contamination.
Traditional cultivation techniques detect changes in oxygen levels that indicate the presence of bacteria, but the results can take seven days. There are newer and faster bacteria detection systems such as solid cytometry that detects and calculates all fluorescence -marked bacteria in three minutes.
as well as methods used to detect bacteria in platelets, bacterial detection in water or air usually requires the number of plates where water is placed on the agar surface and culture can grow. After a sufficient time for the bacteria to multiply, the bacterial colony is calculated. Another way to identify bacteria in water is to use a virus to infect bacteria by fluorescent reporter molecules that can be identified by fluorescent spectroscopy.
Newer method detection of bacteria that has the potential for a wide range of applications is a sensor that is a potentialn by bacterial antibodies that pass through it by electricity. When this sensor comes into contact with bacteria, the sensor detects the frequency changes that indicate the bacterial presence. This technology has been used to improve the detection of Escherichia coli (E. coli) in meat processing devices and to detect microcystin-LR toxin (MC-LR) toxin in drinking water. This technology detects bacteria in minutes, while the older cultivation method takes hours to days.
PCR is a molecular technique of bacterial identification, which has several advantages over other methods of bacteria detection. Some estimates report that more than 99 percent of all bacteria in the human body cannot be cultivated, causing traditional techniques to be insufficient for many applications. PCR can detect a low amount of bacteria very quickly using RNA and DNA amplification techniques.