How Sodium Hypochlorite kill bacteria

According to a new study in the Journal of Biochemistry and Biophysics, sodium hypochlorite in disinfectants kills bacterial cells and biofilms by denaturizing proteins in biofilm matrices and inhibiting important enzymatic functions of bacterial cells.

For more than 200 years, chlorine bleaching has been the common remedy - too chemical to wipe out germs, but scientists are only just beginning to figure out how the corrosive material kills bacteria and other microbes. Typically, it is known to turn white (or whiter) and sterilize toilet bowls, so many people reach for a bottle of bleach to kill germ viruses on a variety of household surfaces. It has long been known that bleach, a solution of the chemical sodium hypochlorite, can wreak havoc on proteins.

According to a new study in the Journal of Biochemistry and Biophysics, sodium hypochlorite in disinfectants kills bacterial cells and biofilms by denaturizing proteins in biofilm matrices and inhibiting important enzymatic functions of bacterial cells.

We now know that germs and bleach kill bacteria such as bacteria, viruses, fungi and other pathogens, but hypochlorite is deadly for most microbes, with the exception of viruses and vegetative bacteria that form endospore.

   

In a study comparing the virucidal efficacy of the four new disinfectants, Kennedy and colleagues found that the chlorine dioxide-containing products were comparable to sodium hypochlorite.

Adding activated oxygen to bleaching increased the effectiveness against a number of bacteria, but the addition of sodium hypochlorite detergents significantly reduced the number of viruses in the Gerba laundry. During this period, the 5% sodium hypochlorite content required for the inhibition of microorganisms was 0.5%. At the reduction level required by the EPA, hydrogen peroxide and sodium chlorite disinfectants are more effective against bacteria than chlorine dioxide and bleach, respectively. Escherichia is produced by the bacterium Pseudomonas aeruginosa, which is one of the most common pathogens in human and animal feces.

This table will help you to find out how much chlorine is needed in bleach to disinfect and clean it. For example, if household bleach contains 1.5 ppm of sodium hypochlorite, a dilution of 1 / 10th of this yields about 5250 - 6150 ppm and 1-1000 dilutions yield about 2,500 - 3,100 ppm. When we review the recommended sodium hypochlorite products and products containing sodium hypochlorite on the EPA website and the CDC recommended products containing sodium hypochlorite, we see large variations in contact time.

This depends on the concentration of available chlorine and the pH of the solution, but according to the CDC, chlorine is The pH value is the most important factor for the presence of germs that can make swimmers ill. When you use household bleach to disinfect your home, pool chlorine kills bacteria, viruses and parasites that can survive in the water. A higher disinfectant content means that more bacteria and viruses are killed than recommended by the manufacturer.

   

Unlike chlorine bleach, which is designed for domestic use such as Domestos, sodium hypochlorite is diluted with other chemicals such as lauramine. This disinfectant cannot be used to bleach in the presence of bacteria, viruses, parasites, fungi or other pathogens, but it can be bleached in a water bath, shower, bathtub, sink or shower curtain.

If you can't get enough of this regularly used disinfectant, use other disinfectants such as bleach in its place or use it instead of bleach. 

The second best option is to use liquid pool chlorine, which is sodium hypochlorite, an additive to laundry bleach. The most widely used and commonly known bleach is used because it is produced by electrolysis of a brine (which we discuss below). It is a solid (e.g. calcium hypochlorites) and is one of the most commonly used disinfectants in the USA and Europe. You can also use it in liquid form if you need it, such as in an air conditioner or washing machine.

Chlorine bleach contains the active ingredient sodium hypochlorite (NaOCl), while chlorine bleach has different active ingredients for different purposes.

Hydrogen peroxide, for example, is widely used as a paint - safe bleaching - and sodium percarbonate (sodium peroxide) is typically used as an oxygen-power stain remover. It is a mixture of synthetic chemicals whose main component is sodium hypochlorite (see glossary), normally referred to as household bleaching. This is the most common type of bleach available in the US, and the second most popular in Europe (after chlorine).

Electrolyzed water (anolyte) is an oxidizing, acid hypochlorite solution consisting of a mixture of hydrogen peroxide, sodium percarbonate and an electrolyzed electrolyte (sodium hydroxide). Household laundry bleach is one of the most common types of bleach available in the US and Europe. A 10% bleaching solution, also known as "10%," is produced by adding nine parts of water to a solution of sodium hydride and one part of electrolytes such as sodium sulphide or sodium chloride.

   


Devendra Singh

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