Buy meat first or food first? The order in which you shop for food keeps your table safe.

Original title: Buy meat first or food first? The order in which you shop for food keeps your
and people are now used to buying ingredients for the day or week at the supermarket. Buying food from supermarket shelves is also about order, the wrong order, may lead to a significant discount in the freshness of ingredients, and even produce a large number of bacteria, affecting table safety.
procurement order and food safety related
in modern cities, the variety of goods is extremely rich, people walk around the supermarket to see, pick and choose, not an hour or two out. Then, load the purchased food into a car, walk through the congested city, and move the goods home for another hour. Even if the supermarket is not far away, it's only a 20-minute walk, and a hard shopping trip can take half an hour. When some people bring food home, they are too busy with other things and forget to immediately stuff food that needs to be refrigerated and frozen into the fridge.
or frozen food needs to be stored and transported in cold chains. In other words, it needs to be stored at low temperatures from the time of production to the time of the next pot. If the temperature exceeds the shelf temperature, they will decay ahead of time, or the quality will drop significantly.
if frozen food is not kept in the freezer, its temperature will rise and even begin to melt. Even if it doesn't melt, its shelf life will be shortened, and because of temperature fluctuations, ice crystals will appear in the bag, the ingredients will become dehydrated and hardened, glued to each other, the taste will be worse, and even cracks will appear. If it's melted, it's even worse. Because your refrigerator does not have fast-frozen equipment conditions, when frozen again, it must be "slow-frozen". Slow freezing can lead to large ice crystals in food, which not only make the taste worse, but also increase the loss of nutrients and flavor substances.
cold food leaves the freezer shelves, the temperature also rises and will soon be in balance with room temperature. Among them, the microorganisms that were inhibited by the refrigerated temperature have begun to multiply rapidly, the rate of reproduction is getting faster and faster, and the total number of bacteria is increasing.
, in order to buy food safely, you need to pay attention from all aspects of shopping to minimize the time out of the cold chain. In addition to the time spent in the supermarket, driving or walking home, as well as the time to wait at room temperature after entering the house should be as short as possible, but also pay attention to the following points.
Sequently take ingredients
when shopping in the supermarket, regardless of the supermarket shelf order, to buy things in this order:
long shelf life, and not afraid of pressing products, such as rice noodles, grain and oil, canned, non-refrigerated packaged food.
short shelf life, but products, such as fruits and vegetables, can be lowered at room temperature for at least a day or two.
frozen foods, such as frozen dumplings, frozen meat and so on.
cold food, such as pasteur milk, cold meat, sesal fillts and so on.
you've finished taking the food, don't wander around, check out right away.
are placed in shopping carts
putting together foods that need to be frozen and refrigerated, allowing them to "chill" and slowing the rise in temperature. But don't put fresh vegetables and frozen foods together, because vegetables come into contact with things that are tens of degrees Celsius below zero and there is a risk of frostbite.
different types of frozen, refrigerated food should be carefully wrapped, neither contact with fruits and vegetables, do not contact each other, to avoid cross-infection of microorganisms. In particular, pasteur milk, yogurt, syringe fillts, such as cold food that does not boil at high temperatures, must be careful not to touch other raw fish raw meat, nor contact with unrhythed vegetables and fruits.
when using a shopping basket to store food, consider bringing your own or buying one or two refrigerated belts, or bring your own ice pack. Refrigerated bags are insotherbic, and metal reflective membranes on the inner walls reflect thermal radiation. Put your frozen and frozen food in and you'll be more comfortable on the road. Refrigerated and frozen food is lying in one bag and others in other bags.
speed home, go straight to the refrigerator
carrying a shopping bag containing refrigerated, frozen food, as soon as possible back home, the road do not go to the movies, buy other goods, shopping, chat, etc., so as not to delay time. The first thing to do when you get home is to sort the food into the fridge.
meat that didn't fit in the fridge in time, if it's frozen, it's cooked out quickly. It doesn't matter if you can't finish a meal, you can pack it while it's hot, then freeze it or refrigerate it separately, or you can enjoy it several times.
if pasteur milk is no longer cold, even if put in the refrigerator, the shelf life will be greatly shortened. Drink it on the same day or the next day, but don't forget to drink before heating to 80-90 degrees Celsius, kill live bacteria and drink again, you will be more assured, to avoid children, the elderly, gastrointestinal sensitivity and infirm people caused by microbial discomfort, and even bacterial food poisoning.
if the sesalone has lost refrigeration conditions for more than an hour, it is not recommended to eat raw, cooked and then eaten. Because aquatic products are often more likely to cause bacterial contamination, it is very easy to appear bacterial food poisoning.
(author is Fan Zhihong, Ph.D. in Food Science, China Agricultural University)