Buckwheat skin pillows are the most unclean experts recommend a wash in March

Many people have the habit of cleaning pillowcases and pillows regularly, but they have little awareness of cleaning pillows. These days, a widely forwarded microblog said: "In a pillow that has never been washed, half of it is dust mites and mold. Therefore, the total cleaning of the pillow is likely to endanger health." This conclusion is based on the fact that when the body sleeps, the sebum, sweat and saliva of the human body will seep into the pillow core. Over time, the germ will be rooted in the pillow core and become the "seedling" of the disease.

Is the fact as sinful as Weibo said? Recently, the reporter came to the Yangjiayuan community in Yongwai Street, Dongcheng District. From several households, they found the most commonly used pillows for buckwheat, fluffy cotton, down, and tea stems. Go to the Beijing Academy of Agricultural Sciences for examination. After 24 hours of bacterial culture, the experimental results showed that the total number of pillow cores of buckwheat hull material was the most, which proved that it was the dirtiest; and the cleanest pillow core was down material.

Community survey

Home pillows are rarely cleaned

“Would you use the pillow to wash?” When competing for the pillow sample, the reporter also conducted a small-scale survey of the community. More than 80% of the residents said that their pillowcases and pillows were often replaced, but never Clean the pillow.

Resident Ge provided the reporter with a buckwheat pillow that he had used for a long time less than his 7-year-old son. The reporter saw that the pillow is not big in shape and is about one-third the size of an adult pillow. The small embroidered pillowcase also bears the child's name. Remove the pillowcase, the middle part of the pillow is obviously different from the surrounding color, with a hint of yellow. Mr. Ge said that this was the pillow that the son had made in kindergarten for less than three years. At that time, pillows and bedding were all purchased in kindergarten. Since the son is full, he will take home two or three days a week, so this pillow will be used at night except for the noon time every day. After the child retired from the park last year, the pillow was not willing to throw it, and he took it home. As for the cleaning frequency, Mr. Ge said that during the summer and winter vacations, he would take the pillowcase and quilt cover and wash it. After the garden was opened, he would take it back, but the pillow core had never been washed.

The reporter found two pillows of different materials from the residence of Ms. Yin, one is fluffy cotton material and the other is buckwheat skin material. Ms. Yin said that these pillows are for her own use. The buckwheat pillow has only been used for three years. It was bought from the supermarket and never washed after buying it. The fluffy cotton pillow has been used for seven or eight years. The pillow will be washed with a washing machine in about three months.

Since then, the reporter has also found down pillows and tea stem care pillows from the residents' Ms. Liu's home and the community neighborhood committee duty room. Ms. Liu’s down pillow has been used for more than two years and has never been cleaned. Ms. Liu said that the down pillow is not easy to clean, so when she catches up with the sun, she takes the pillow to the balcony for ventilation. After uncovering the two-layer pillowcase, the reporter saw that there were several traces of yellow and yellow in the center of the pure white pillow core.

As for the last tea stem health pillow, the staff of the community neighborhood committee told the reporter that this was purchased in 2010 and was used exclusively by people who came to the neighborhood committee at night, and that it was used by everyone in turn, and the frequency of use was about once a week. The jacket of the pillow is made of a bamboo mat, and the tea stems of the pillow are equal in size and are wrapped in two layers of thin gauze. “Whenever you use it, wipe the surface of the bamboo with a damp cloth. The pillow has never been washed.”

Experimental result

Buckwheat skin pillow is the dirtiest

These four types of five pillows are made of different materials, and the price ranges from tens of yuan to hundreds of yuan. So, which type of pillow is the cleanest? Which one is the dirtiest? The experiment can be identified. Recently, the reporter sent the five pillow samples to the laboratory of the Beijing Academy of Agricultural Sciences.

Associate Professor Yan Wenke conducted a bacterial culture experiment on these pillow cores. He first took 5 ml samples from 5 pillows into a sterile test tube and labeled the tubes. At the same time, on a sterile operation table, an equal amount of sterilized physiological saline was injected into five test tubes each containing down, buckwheat husk, fluffy cotton, and tea stalk. Professor Yan said that the purpose of adding saline is to fully mix the contents of the test tube and dissolve the bacteria on the test sample into the test tube.

He then thoroughly shaken the five tubes. After taking five culture dishes, Professor Yan injected 100 μl of the sample mixture into the culture dish. After that, he used a stick of 5 sticks sterilized with an alcohol lamp to spread the liquid injected into the dish. After the lids of the petri dishes are covered, the dishes are placed in a 37-degree incubator.

After 24 hours, the experimental results came out. The reporter saw that there were some yellow spots on each dish. Professor Yan said that this is the resulting colony. A yellow dot is a colony, and a colony is made up of many different bacteria. The number of colonies is proportional to the cleanliness of the pillow sample. Judging from the five culture dishes, the two buckwheat husks have the largest number of pillow colonies. Among them, the buckwheat pillow used by the child covers almost the whole culture dish; the cleanest is the down pillow core.

Professor Yan also said that he initially judged that some bacteria and many yeasts were contained in these bacteria. Yeast is a kind of odorous bacteria. For example, some people's foot odor is related to this kind of bacteria. Under normal circumstances, yeast does not affect the human body, but after reaching a certain amount, it is also harmful, which is not conducive to human health. Therefore, he suggested that ordinary families should clean the pillow at least once every three months.

Expert analysis

Why are there more or less colonies?

For the experimental results, Dr. Gong Yu, a member of the Environmental Protection Standards Committee of the China Environmental Protection Association and an associate professor of the School of Materials of the Beijing Institute of Clothing Technology, said that the pillow samples provided by the residents have reached different conclusions. The results of this experiment are credible. But he also believes that the total number of colonies is related to the degree of contamination of the pillow user. That is to say, the habits and methods used by each resident are different, resulting in different sanitary conditions of the pillow. For example, the buckwheat pillow of a kindergarten child has been proved to be the dirtiest by experiment, and may be the saliva, milk beverage, etc. that he has used in his use.

In addition, from the materialological analysis, the total number of colonies in the experimental sample is a cumulative process. Therefore, the final colony is exceeded, and it may be related to the sparseness and density of the pillowcase textile material. The denser the pillowcase is, the worse its breathability and the easier it is to germinate.

"Pillows should be like the clothes we wear every day. They are often washed, often dried, and well maintained. In order to prevent bacteria, when choosing pillowcases, the public should choose textiles that are looser." Professor Gong Yi also suggested that the pillows at home should Special pillows to avoid cross-infection of mites, plus frequent wash, so as to ensure the hygiene of the pillow.

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