Testing of the Bacteria in Food & Water & How It is Done –

Introduction –   

Bacteria can be tracked down all through the environment; including normal household surfaces, water, and even skin. While some bacteria can pose health gambles, most are beneficial to people. For those who are interested, there are multiple ways of testing for bacteria, or doing the bacteria testing, or the microbial communities that encompass us every day. Normal test methods for bacteria include: Commercially available packs that will identify microorganisms on a surface or in the air at your house. Bacteria development in a controlled lab setting where a microbiologist will identify the living being. This is commonly done to identify disease causing microbes.  Bacteria and moulds are often identified by taking a gander at the characteristics of the cell, like size and shape, and the food sources it utilizes. Customary microbial science takes into account these aspects of the cell’s life to determine exactly what type of microbe is present. Modern microbial science likewise utilizes the DNA sequencing to identify a microbe inside the space of minutes quickly.

How a Testing is Done for Identifying Bacteria –

The microbial science lab utilizes the well-known ISO 22196 test method to test for bacteria. This works by taking specific bacteria and setting them onto one surface treated with Microban technology and one untreated surface. Let’s take a cutting board as an example; the microbiologist will place Salmonella, an ordinary microbe encountered on food surfaces, onto an unprotected cutting board as a control and onto a Microban-treated cutting board as a test surface. After a set measure of time, the bacteria are removed from the two surfaces and counted. The microbiologist will then issue a report demonstrating the reduction in bacteria observed on the Microban-treated cutting board versus the control sample.

Who Cannot See the Bacteria –

Humans may not see them, but rather microbes are all over. This reality is revealed to microbial science students who are tasked with an exemplary project: to identify bacteria and parasites from their environment. Armed with q-tips and Petri dishes loaded with nutrient agar, students head out of the lab to see what lives on surfaces they encounter every day. Numerous students choose to sample the places they consider dirtiest: toilet handles, door handles, or the floors in the school. After cleaning and spreading the invisible contents onto the agar plate, the scientists placed their agar plates in the hatchery and awaited the microbial surprises the accompanying class period. Once the microbes revealed themselves on the agar plates, the time had come to identify them. Despite the absence of microbes on some plate, there could in any case be microbes present on the restroom reflect. Not all microbes develop on the same type of nutrients, or at the same temperature.)

Early Identification –

The earliest microbial identifications relied on observations of the microbe’s actual characteristics: shape, size, and the types of dyes it absorbed. Antoni van Leeuwenhoek initial saw microbes through a microscope during the 1670s. These microbes came from decaying bodies, creatures, vegetables, and water. He documented the discoveries, describing what he saw as “animalcules,” derived from the Latin “animalculum” or “little creature.” To better visualize the microscopic among us, Hans Christian Gram developed the Gram stain technique in 1884. Gram created this technique to make bacteria more visible in stained lung tissue sections, and not for arranging microbes, as it is ordinarily applied today. Other types of staining can tell microbiologists whether certain features are present. 

By Clare Louise
No widgets found. Go to Widget page and add the widget in Offcanvas Sidebar Widget Area.