Can bananas be wrapped in tin foil to extend the shelf life? You can fall asleep quickly by spraying a few sleep sprays on your pillow before going to bed. Toothpaste, baking soda, white vinegar, salt and detergent can be mixed together to remove old dirt? There are more magical instant noodles that can repair everything? These "life tips" circulating in the short video of vibrato are simple and effective, and they are eager to try. However, some netizens said that the effect was not satisfactory after trying. So are these tips reliable? Listen to what the experts say.
Will the banana root be wrapped with tin foil to extend the shelf life? Not necessarily!
In the video, if you want to keep bananas for a long time, you just need to clean them and then wrap them in tin foil. The principle is that ethylene gas released from bananas can accelerate the browning and ripening of bananas, and also accelerate the ripening process of any fruit nearby. Because most of the ethylene is released from the roots of bananas, wrapping it with tin foil or plastic wrap can slow down the ripening process of bananas and thus achieve the purpose of prolonging the fresh-keeping time.
Wang Hao, an associate professor at the College of Food Science, Tianjin University of Science and Technology (Tianjin Food Safety Science Base), said that bananas belong to climacteric fruits, which will release a large amount of ethylene (which will make bananas mature) at maturity, at which time the respiration rate of fruits will be greatly improved and will reach maturity quickly. If bananas want to be transported for a long time, they must be picked from the trees before they are fully ripe, so that they can withstand long-distance transportation and long-term storage.
"Generally speaking, bananas purchased by consumers in Chengcheng Huang are basically artificially ripened before sale." Wang Hao said, therefore, when bananas are bought, they should be washed and dried with clear water first, which can reduce the adhesion of ethylene gas on the surface and help to prolong the shelf life of bananas. Wrapping banana roots with tin foil or plastic wrap is also to inhibit the release of ethylene gas, which should have a certain effect, but the effect is not necessarily so obvious. If you want to prolong the shelf life of bananas, you should mainly control the storage temperature of bananas, which is generally the best at more than ten degrees Celsius, which can slow down the breathing rate of bananas. At the same time, reduce the pressure surface, it is best to hang bananas, because after the tissue is compressed, it will gradually soften, and the pressure surface is the worst.
Wang Hao said that generally speaking, bananas that have been artificially ripened can be preserved for about one week, and the shelf life can be extended to two weeks through technical means. If you want to store bananas for a long time, it is best to buy green bananas that have not been artificially ripened and let them ripen slowly.
Sleep spray is "insomnia buster"? The effect is limited!
The end of the year is a critical period for many office workers to achieve success. High-intensity work and pressure have made many people deeply anxious, and insomnia has become a common occurrence. At this time, the sleep spray recommended by Tik Tok and Xiaohongshu on various road networks has become a lifeline for many office workers. All kinds of sleep sprays are claimed to be added with lavender, vetiver, chamomile essential oil and other pure natural sleep-assisting ingredients. Spray 2-mdash on the pillow or quilt cover before going to bed; Three times can make people relax and ease their anxiety, thus helping them fall asleep.
Wang Lina, director of the Department of Mood Disorders of Tianjin Anding Hospital, said that some plants do have the effect of calming the nerves. The compound plant essential oil covers three major components: terpenes, alcohols and esters, among which linalyl acetate, aromatic alcohols and limonene are the main components. Generally speaking, alcohol has a good sedative effect, and related studies have confirmed that linalool has a soothing effect on the central nervous system, including helping sleep, anticonvulsant and lowering body temperature. In addition, esters also have the effect of helping sleep, which can prolong sleep time, and their effects will be enhanced appropriately with the increase of dosage.
"This kind of sleep spray containing essential oil can be used as a health care product, and patients with acute insomnia can use it for a short time, and it also has a certain effect of helping sleep. At present, some surveys show that about 70% of patients with acute insomnia can slowly recover through their own adjustment. " Wang Lina said, but another 30% patients will transition from acute insomnia to chronic insomnia, and these people need to find a professional doctor for examination and professional systematic evaluation.
Chronic insomnia, sleep rhythm disorder, it is not these health care products can solve. If you don’t receive the treatment of professional doctors in time, it will lead to many emotional problems, the most common ones are depression and anxiety disorder. On the contrary, depression and anxiety can also cause sleep disorders. The two influence each other, a vicious circle.
Can the "mouse" ultrasonic dish washer free your hands? Actually, it can’t be cleaned … …
In winter, the most painful thing is to wash the dishes. If there is no hot water, it is difficult to clean greasy dishes. Tik Tok’s last dish-washing artifact about the size of a mouse made people see the hope of liberating their hands. In the video, this ultrasonic dish washer was put into the sink. As the instrument vibrated, the oil on the dishes also fell off one after another. However, some people sent a video to verify that the oil on the dishes still exists by using the ultrasonic dish washer.
Zhang Sheng, a professor at the School of Chemical Engineering of Tianjin University, explained that in principle, ultrasonic cleaning uses cavitation effect to clean objects. In layman’s terms, it means that micro-explosions and shock waves generated when bubbles formed by ultrasonic waves burst replace hands to wash dishes, so that the dirt on the surface of the cleaned objects is destroyed and quickly falls off. Generally speaking, the cleaning effect will be better if some surfactants (detergents) are added.
"The effect in the video is not ideal, mainly due to the low power of the machine and the location of the dishes." Zhang Sheng said that large ultrasonic dishwashers are generally densely covered with ultrasonic transducers at the bottom, so that dishes can be cleaned from all directions. When this mouse-sized dish washer is placed in the sink, the generated ultrasonic wave can only spread outward, and the energy near the dish washer is strong, and the shock wave far away is weak, which will affect the cleaning effect. In addition, the amount of water in the sink is also very important, and when the amount of water and power do not match, it will also affect the use effect of the ultrasonic dish washer.
Toothpaste, baking soda, white vinegar, etc. can be mixed with strong decontamination? Theoretically feasible … …
Every household has to do a general cleaning before the Spring Festival, and the old dirt in the kitchen stumbles many housewives. Some netizens sent a decontamination recipe at the right time, which made many people get the treasure. In the video, toothpaste+baking soda+white vinegar+detergent are mixed and used together, and a touch on the bottom of the black pot is instantly as bright as new.
Zhang Sheng said that the main components of black scale at the bottom of the pot are a mixture of carbon deposit, iron oxide and oil scale due to insufficient gas combustion. Baking soda is sodium bicarbonate, which can help remove oil stains. White vinegar is mainly composed of acetic acid except water, which can help remove iron oxide. The main components of toothpaste are friction agents (calcium carbonate and calcium hydrogen phosphate), and the main components of salt are sodium chloride, which can help to remove carbon deposits. Detergent can also remove oil stains, so this formula can remove dirt from the bottom of the pot in principle.
Although it has a cleaning effect in principle, in the follow-up experiments of many netizens, this formula did not play a strong decontamination role. Compared with the original video, the dirt on the bottom of the pot is still stubborn in the netizen experiment. In this regard, Zhang Sheng said that the formula is feasible in principle, but the specific cleanliness should be related to the thickness of the dirt at the bottom of the pot and the specific conditions for its formation. In addition, there is too much water in the video of netizens, and the raw materials of the formula are excessively diluted, which is not conducive to cleaning up dirt. In addition, although iron oxide and oil dirt at the bottom of the pot are relatively easy to remove, carbon deposit is not easy to remove. This is also one of the reasons for the failure of the formula.
Is instant noodles reliable in repairing everything? The key is craftsmanship … …
Since Tik Tok came into being, people have seen that "the master is among the people". At present, the popular videos of instant noodles repairing broken furniture, toilets and floors in Tik Tok are amazing. Investigate its repair steps, add instant noodles and glue — Scrub — Polishing — Paint — Completed, the process is simple and rude, and the repaired furniture looks almost invisible to the naked eye.
For this "craft", Zhang Sheng analyzed that the repair mainly uses fillers and adhesives to fill the holes. In the traditional repair of furniture, wood powder, putty, etc. will be used to fill it, then fixed with specific glue, and finally polished and colored. It is not impossible to use instant noodles as fillers, but they are oily, loose and large in particles. If the glue is not uniform enough and the repair technology is not exquisite enough, the effect and quality after repair may be affected.