With the repeated epidemics in recent years, everyone's health awareness has become stronger and stronger, and the sterilization awareness has become stronger and stronger. In the field of home appliances, washing machines are a relatively important category for sterilization needs.

Looking at the common sterilization methods in the entire washing machine industry, there are high temperature sterilization, ultraviolet sterilization, pasteurization, silver ion sterilization, ozone sterilization, and disinfectant sterilization. Which sterilization method is the most effective?

• High temperature sterilization: The most traditional sterilization method, high temperature above 90 degrees is enough to kill most bacteria. Therefore, many people still retain the purpose of scalding their underwear with boiling water to achieve sterilization. The high-temperature sterilization effect is there, but there are fewer types of fabrics that are applicable, and it is basically only applicable to pure cotton clothing.
• Ultraviolet sterilization: C-band UV deep ultraviolet irradiation can penetrate the cell walls of virus shells, fungi, bacteria, spores and other organisms, destroy and change the DNA (deoxyribonucleic acid) or RNA (ribonucleic acid) base pairs of microorganisms such as bacteria Molecular structure affects the ability of nucleic acid replication, causing bacteria to die immediately or unable to reproduce offspring, achieving the purpose of sterilization, resulting in the death of microorganisms, and achieving sterilization and disinfection, especially deep ultraviolet rays of 240nm-280nm are the best.

Because UV sterilization is relatively safe, it is widely used in places where sterilization is required in hospitals, indoor sterilization, and sterilization lamps for medical equipment. The principle of ultraviolet sterilization is to destroy the DNA of microorganisms, which belongs to physical sterilization. In principle, it can effectively kill all germs.

As a sterilization of clothing, it is more inclusive of fabrics, not limited to pure cotton fabrics.

• Disadvantages: Because irradiation sterilization takes time, it will prolong the overall time of laundry washing.
• Pasteurization: It is used in the milk sterilization industry, and clothing sterilization is also used. The main principle is that the temperature above 60 degrees lasts for 30 minutes, killing most of the bacteria.
• Disadvantages: Like high temperature sterilization, it is not suitable for silk, wool, hemp, down, chemical fiber and other fabrics.

Silver ion sterilization:

• The basic principle of silver ion sterilization is that high-priced silver ions have strong oxidizing properties. After silver ions are combined with the cell wall or cell membrane of microorganisms such as bacteria, they can directly enter the interior of the cell and combine with the sulfhydryl group (-SH) of oxygen metabolism enzymes. Make it inactive, block the respiratory metabolism of bacteria and cause them to suffocate and die. Effective sterilization.
• Disadvantages: It is difficult to decompose, purify and concentrate high-concentration and high-purity silver ions, and the production environment is demanding.

Although the probability of occurrence is small, in case of leakage of silver ions, it will cause heavy metal harm to the human body or the environment.

• Ozone sterilization: Ozone destroys the structure of microbial membranes by the oxidation of oxygen atoms to achieve sterilization. The inactivation reaction of ozone to bacteria is always very rapid, different from other fungicides: ozone can react with the double bond of bacterial cell wall lipids, penetrate into the interior of the bacteria, act on proteins and lipopolysaccharides, and change the cell's permeability, leading to bacterial death. Ozone also acts on nuclear substances in cells, such as purines and pyrimidines in nucleic acids, to damage DNA.
• Disadvantages: The concentration of ozone must be within the safety standard. Below this standard, there will be no disinfection effect, and if it is higher than this standard, it will be harmful to people. For the human body, ozone is a toxic gas. Different chemical and toxicological properties, with pungent odor and extremely strong oxidizing properties.

Disinfectant sterilization:

• It is related to the disinfectant you choose. But no matter what kind of disinfectant you choose, it may not solve the problem of residue and taste.

Take a comprehensive look, and sort the above sterilization effects in order.