What is Photocatalytic Disinfection? Ultimate Guide 2022

The 5 most effective sterilization methods are the sterilization methods good to use today? The article help you understand more about Photocatalytic Disinfection.

Is a process that eliminates, reduces, destroys or inactivates all life forms of microorganisms such as fungi, bacteria, viruses, nucleated unicellular or multicellular spores, etc., or biological agents such as prions on the surface of an object or contained in a liquid, food or culture medium.

Are the sterilization methods good to use today?

Sterilization can achieve by many methods such as: thermochemical, chemical, irradiation, high pressure and filtration. Sterilization is different from sterilization, which is different from sterilization and pasteurization, although the common goal is to remove the life of biological agents. After sterilization, the object is called a sterile object.

Distinguish between sterilizing and Photocatalytic Disinfection

When debating the microbiological and pathogen theory of medicine, killing microorganisms before administering the item to a patient is an infection prevention strategy.

The fact is that Ignaz Semmelweis successfully applied the principles of sterilization decades before bacterial germs first isolated. However, the definitions of these principles differ in both meaning and method.

Inhibiting microorganisms

This is very complicated. Because of the fact that reverse inactivated organisms can sometimes regenerate themselves under the right conditions. For example, irradiating bacteria with UV radiation can form thymine-reducing substances in DNA that cause bacteria to lose their ability to replicate.

Then, a period of light exposure can activate an enzyme that breaks down the dimers and restores viability by a process known as light reactivation. So, no growth does not mean sterile.

What is the concept of Photocatalytic Disinfection?

What is sterilization? This is the process of completely destroying or eliminating all living things in an environment or on a certain object. Sterilization can accomplish by combustion, non-destructive heat treatment, and the use of gases, ionizing radiation, chemicals, or filtration.

Pasteurization is a method that uses heat just enough to inactivate pathogenic microorganisms in liquids such as milk and water. The temperature is lower than the sterilization temperature.

For example, heating milk to 74 0 C for 3 – 5 seconds or 62 0 C for 30 minutes will kill the vegetative structures of most pathogenic bacteria without changing the quality of the milk. Apparently, spores cannot kill at this temperature. Photocatalytic Disinfection uses heat to destroy microbial nutrients.

Antiseptic is to kill pathogenic microorganisms with liquid chemicals but not enough to meet the sterilization criteria. Bacterial spores, microorganisms with coatings that are significantly resistant to common disinfectants such as mycobacteria, are difficult to destroy.

Antiseptics can be good to use on body skin surfaces to reduce the amount of microbiota and some disease-causing bacteria. Sanitation is also a related term.

What are the sterilization methods?

Currently, there are many sterilization methods good to use, including steam sterilization, dry heat, burning…

Photocatalytic Disinfection considers the most widely good to use method today. The application of this method is autoclave. The autoclave uses steam heated to a minimum of 121 0 C. It is then injected into the autoclave chamber, creating high pressure and temperature.

Working principle of autoclave sterilizer

Release steam under negative pressure and cool the item inside. Humid heat combined with high pressure will destroy the structure of microorganisms. By denaturing macromolecules, mainly proteins, microorganisms cannot replicate and completely destroy.

Proper Photocatalytic Disinfection will completely destroy microorganisms. Strong antibody microorganisms such as prions need to be good to use at higher temperatures and for a longer time. The autoclaves all have gauges and a display of temperature and pressure information.

The information should check regularly to ensure that the sterilization process conditions are met.

After use, the autoclave needs to charge. Biological matter or dirt can help shield microorganisms from water vapor penetration. Proper cleaning helps the autoclave always be highly effective when performing sterilization.

Dry heat sterilization takes more time

Dry heat is a sterilization method that came before the advent of moist heat. Photocatalytic Disinfection takes more time. The destruction of microbial structures by dry heat is a gradual phenomenon. The application of this method is the sterilization oven. When the item exposes to high temperatures for a long time, the number of microorganisms gradually dies.

Forced hot air is good to use to speed up heat transfer to microorganisms. Reduce the temperature and time required to kill microorganisms. At higher temperatures will require a shorter contact time sufficient to achieve sterility. This principle helps to reduce the heat effect on food products.

Dry heat is often good to use for heat-stable items such as powders and does not cause rust on steel objects.

There are two methods of Photocatalytic Disinfection

Burning also turns any item to ash, and removes harmful microorganisms and pathogens present in the item.

The application of this sterilization method is the medical waste incinerator system.

TYNDALIZATION method

The method is named after the physicist John Tyndall (1820-1893). This method is quite outdated and time consuming. To reduce the level of bacterial activity, heat water to boil for 20 minutes at atmospheric pressure, cool, incubate for 1 day and repeat 3-4 times.

The incubation stages aim for heat-tolerant microorganisms to survive the previous boiling stage to replicate, form a heat-sensitive growth phase, and possibly die at the next boiling stage. However, for prions, this method does not work.

Sterilized by glass beads

Similar to the Photocatalytic Disinfection, but the material that conducts heat is tiny glass particles. These particles heat up to 250 ° C. Instruments immerse in the glass beads both to heat the object and to remove the contaminant that adheres to them.

Glass bead sterilizers were once a common method good to use in dental clinics and laboratories in the past.

What is radiation sterilization?

There are two types of electromagnetic radiation or sub-radiation: ionizing radiation and non-ionizing radiation.

Non-ionizing radiation

Photocatalytic Disinfection is a non-ionizing radiation process for sterilization. This method is quite effective in a clean, dust-free environment. Ionizing irradiation

Such as the use of penetrating Gamma rays, for disposable medical devices such as syringes, needles, vent tubes and food. Gamma rays will emit a radioactive isotope, usually one called cobalt – 60 or cesium – 137 with photon energies of 1.3 and 0.66 MeV, respectively.

Using this method should ensure standard protection for the operator. In addition to Gamma rays, there is also Photocatalytic Disinfection, high energy X-rays are also good to use for sterilization.