Discussion on hotel disinfection

As the saying goes, "illness enters from the mouth" profoundly reveals the close relationship between diet and human health. Scientific, reasonable and hygienic eating habits are important conditions for health and longevity.

In life, some people like to wash tableware with boiling water or tea when eating out, hoping to play a role in cleaning and sterilizing. But the question is:

Is it really effective to sterilize a bowl with boiling water?

Is it reliable to cook dishes and chopsticks with boiling water?

In fact, our concerns about tableware hygiene are not superfluous. If the cleaning and disinfection of chopsticks are not sufficient, or the chopsticks are contaminated twice after cleaning, there is indeed the possibility of pathogenic bacteria, especially some public chopsticks with high frequency of use and difficult to ensure hygiene.

So is it reliable to iron dishes and chopsticks with boiling water or tea before meals?

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Experts pointed out that high-temperature disinfection must meet two conditions at the same time to achieve real results:

One is the action temperature and the other is the action time. Generally speaking, boiling at 100℃ for more than 5 minutes can kill or inactivate some bacteria and microorganisms.

There are many kinds of microorganisms in intestinal infectious diseases, and the bacteria that often cause acute diarrhea are pathogenic Escherichia coli, Salmonella, Vibrio cholerae, Shigella, Bacillus cereus and so on. Most of these bacteria will die after being exposed to high temperature of 100℃ for 1-3 minutes or heated at 80℃ for 10 minutes. In addition, some bacteria are more resistant to high heat, such as anthrax spores and wax spores.

▲ The higher the temperature, the shorter the time.

The sterilization temperature here is mostly the lowest sterilization temperature.

Generally, hot water and hot tea provided by restaurants are mostly around 70-80 degrees in order to avoid scalding.

If you pour water into cold tableware, the temperature will drop even lower. In addition, when many people iron tableware, the speed is a few seconds, and the speed is more than ten seconds, which is far from enough.

Therefore, boiling the bowl with boiling water before eating can not guarantee to kill most pathogenic microorganisms because of the lack of temperature and time. Although the washing of water can take away some bacteria, the effect is limited.

Some people like to wipe dishes and chopsticks with white wine, thinking that it can achieve the purpose of disinfection.

Actually, it is not, because the alcohol concentration used for disinfection in medicine is 75%, while the alcohol content of general liquor is below 65%. Therefore, wiping tableware with white wine can not achieve the purpose of disinfection.

Reminder:

① When dining out, you should first choose a restaurant with high credibility. A reliable restaurant can ensure hygiene even if it cleans itself. Of course, the most effective way is to bring your own tableware, such as chopsticks, but this is more difficult to do.

There may be bacteria on tableware, but they are not necessarily harmful to human health. Some bacteria will pose a threat to the human body only when they reach a certain number; If the quantity is small, we can fight with our own resistance.

How to distinguish whether sterilized tableware is qualified?

At present, some restaurants use packaged sterilized tableware, and the sanitary problems of this kind of tableware are often concerned. So, how can we preliminarily identify whether these sterilized tableware are qualified?

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look

See if the plastic film of tableware is clean. If there are many impurities on the film, it may be the reuse of waste plastics. It also depends on the production information (such as address, telephone number, product shelf life, etc. ) done.

Wen'er

After tearing open the plastic package, smell it for pungent smell. If it is cleaned with irregular cleaning solution, the residual odor will be more serious; If it is not cleaned properly, the oil residue will also have an odor.

Sammo

Touch the tableware with your hands. If there is water or astringency, it may be that the oil is not cleaned.

You can do this by sterilizing your own tableware.

A kitchen hygiene survey shows that "the total number of bacteria on a dish cloth can reach up to 500 billion". If that's the case, it's hard to imagine the bacteria that wash dishes with it every day. Therefore, it is best to disinfect tableware at home regularly, especially for the elderly, children and other people with weak resistance.

Don't neglect the cleanliness of the bottom of the bowl!

Here we should focus on reminding everyone:

When you brush the bowl, you must clean the whole bowl, especially the bottom. If you don't pay attention to the hygiene of the bottom of the bowl, when the bowls are stacked, the bottom of one bowl will touch the inner wall of another bowl, and the dirt and bacteria at the bottom of the bowl may enter the other bowl.

It is suggested that the frequently used bowls and chopsticks should be disinfected regularly, and the frequency can be determined according to the specific situation.

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1, boiling disinfection method

Boil the cleaned chopsticks in boiling water for 5~ 10 minutes. It should be noted that wooden chopsticks will bend and deform when heated, so this kind of tableware cannot be disinfected in this way.

2, steam disinfection method

Put the washed tableware into a steamer or steamer, and sterilize it for about 5 ~ 100 minutes when the temperature rises to100 degrees.

3. Disinfection cabinet

In addition, you can also use a professional disinfection cabinet, the temperature is generally around 120 degrees, and it usually needs to be kept at 15~20 minutes.

4. Dishwasher disinfection

Dishwasher integrates cleaning and disinfection, which is convenient and fast. However, it should be noted that disinfection must be carried out in strict accordance with the time and temperature, so as to ensure the disinfection effect.

Boiling disinfection is the first choice for the above common disinfection methods.

When boiling disinfection, you should also pay attention to:

(1) tableware must be thoroughly cleaned first;

② Disinfected tableware should be completely soaked in water;

(3) Items should not be placed too much, generally not more than 3/4 of the container;

(4) Watertight items, such as bowls and plates, should be placed vertically, which is beneficial to the convection of water;

⑤ Boil water for 5~ 10; The items of hepatitis patients should be boiled for 30 minutes;

6. Don't add new items in the middle of continuous boiling.