For medical or medical disinfection and sterilization, suitable sterilization methods include EO ethylene oxide sterilization, steam high temperature and high pressure steam moist heat sterilization, and gamma cobalt 60 irradiation sterilization. Its use method and effect: medical devices are packed into packaging bags and then sealed for sterilization and disinfection. The packaging bags are used to pass sterilization factors and do not pass through the semi-dialysis permeability of bacteria, and then the professional institution Soochow University Medical Testing Institute conducts EN868 After professional testing, it is shown that the aging of the packaging bag can reach 3 to 5 years. Objects: medical gloves, medical syringes, hemostatic gauze, surgical hole towels, medical catheters and tracheal intubations, surgical gowns, intravascular catheters, indwelling needles, electrosurgical pens , Heparin cap, three-way stopcock, roar cover, balloon, artificial joint, occluder and other medical consumables packaging and high-end medical equipment packaging.
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In the hot summer, eating a piece of chilled watermelon really refreshes the person, and the sweeter the colder and sweeter the food is, the more delicious and sweet the watermelon after chilling, so many people like to eat the watermelon after icing. In fact, this is not a good thing. Watermelon nutrition will be lost after cold storage. A study submitted by scientists from the U.S. Department of Agriculture showed that iced watermelons are rich in nutrients that are much lower than those stored at room temperature. Watermelon can still produce nutrients after being picked, but rapid cooling will slow down the process of nutrient production and reduce nutrients. Researchers said: "Usually, the preservation period of watermelons can be stored at 13 °C for 14 to 21 days. However, in the case of ice, for example, only 5 °C, watermelons will start to decay after one week."
☆ Lycopene and β-carotene contained in watermelon at room temperature are 40% higher and 139% higher than those in iced watermelon, and these nutrients are components of anti-oxidants with anti-cancer effects.
☆ On the surface, the fridge is placed in order to preserve the freshness of the watermelon, but it is not known that this will make the watermelon “ageing†in advance. The refrigerator contains anaerobic bacteria. As time goes by, the number of anaerobic bacteria will increase. Attaching to cut watermelon pods will destroy the vitamins, minerals and other nutrients contained in the watermelon.
☆Icy quails may also cause gastrointestinal function in people with gastrointestinal disorders such as diarrhea.
☆Watermelon belongs to the fruit with more water content. After long-term refrigeration, the water will evaporate and take away nutrients.
In addition, may some people say that the plastic wrap is not enough? In fact, determined people will find that watermelon hawkers are mostly buying fresh bargains from the wholesale market. The quality cannot be guaranteed, or even three products. Even the "wrapper film" produced by the regular manufacturers that we have bought in the supermarket will be noted on some of the above: Do not touch the food surface directly. Therefore, everyone should pay attention when using plastic wrap.
However, it is difficult for everyone to give up on the cool and sweet taste of the iced watermelon. It is recommended that after buying it, the hawker should remove the preservative film, and it is best to rinse it slightly (or when it is eaten, it will be in contact with the plastic wrap. Cut off.) Put on a reliable quality plastic wrap, ice in the refrigerator for an hour or two, take it out to eat, do not ice too long, not to recommend, buy a big one, one ice is a week. Best to buy that day to eat the same day. 