Where is the most fresh food in the refrigerator？
Where is the most fresh food in the refrigerator?
When the holiday season arrives, the refrigerator becomes a “big warehouse” and “recycling bin” where cooks and hoarders hoard food, and the illness comes in from the mouth. This way the refrigerator becomes a storage room reflecting the health of the family.
■ Different levels, some people buy food home, or throw leftovers leftover into the refrigerator.
Whenever you open the refrigerator, it’s always messy.
In fact, the food in the refrigerator is enlarged and learned. If the position is wrong, the temperature will be wrong, and the quality of the food will be greatly affected.
The temperature is lowest at the refrigerator door and lowest near the rear wall. The upper layer of the refrigerator is warmer and the lower layer is colder. The fresh-keeping box is rarely turned and is close to the lower layer, so the temperature is the lowest there.
Therefore, we do not prevent the refrigerator compartment from being divided into several areas according to the order of temperature: the refrigerator door frame, the upper floor is near the door, the upper floor is at the rear wall, the lower floor is at the door, the lower back wall, and the crisper.
At present, the fresh-keeping refrigerators in the multi-temperature zone are developed for the problem of keeping fresh food in different zones.
Relevant experts tested the nutrition of food stored in a four-temperature refrigerator.
Experimental data show that the chlorophyll retention rate of green leafy vegetables in ice greenhouses is significantly higher than that in refrigerated rooms, and the chlorophyll content of such fruits and vegetables is well maintained to avoid yellowing of green leafy vegetables.
Fruit is an important source of vitamin C for the human body. After 15 days of storage in the ice greenhouse, the retention rate of vitamin C is 5% higher than that of the refrigerator.
And the freshness period of meat and milk, the ice greenhouse is longer than the refrigerator?
Suitable for placing on the lower floor are: foods that are not cooked but need to be kept at low temperature, such as water tofu, salted kelp, etc., foods that are tightly packed to prevent cross-contamination, and foods that are waiting to be thawed slowly, Suitable for storage in the coldest place, some lower back wall.
Suitable for storage in fresh-keeping boxes are: sour meat, semi-frozen fish, sea shrimp and other seafood.
Bacteria in aquatic products are often resistant to low temperatures, and it is easy to accelerate their reproduction when the temperature is slightly higher, while the fresh-keeping box can prevent isolation and avoid cross-contamination, and also has thermal insulation effects, avoiding temperature fluctuations caused by replacing the refrigerator door.
Suitable for putting on the refrigerator door frame are: packaged but unsealed, itself will not be at 1?
2 Foods that have deteriorated over time, such as ketchup, salad dressing, sesame sauce, seafood sauce, cheese, jam, jam, fruit juice, etc., and egg foods such as eggs, salted duck eggs, etc.
Suitable for the upper door: cooked food, yogurt, dessert, etc.
When storing these foods, avoid too low temperatures and prevent cross-contamination of raw and cooked foods, so they should not be placed in the lower layer.
It is suitable for leftover meals, leftover soymilk, and packed soybean products.
Because these foods are prone to bacteria, temperatures slightly below zero are best.
A variety of vegetables and apples, pears and other fruits are suitable for placing on the lower door, and they should be packed in fresh-keeping bags to avoid freezing damage due to low temperature.
■ Use qualified plastic wrap to ensure fresh food. We all know that the rest of the food must be put in a fresh-keeping box before it can be stored in the refrigerator. Otherwise, it will easily deteriorate. However, we usually do n’t think about keeping the food just purchased fresh.Because their “deterioration” is not easy to detect.
However, it is precisely this kind of “perishable” that secretly takes away the moisture and effective nutrients of food, which greatly reduces their taste and nutritional value.
Food preservation requires three factors-temperature, humidity, and gas.
Adding a refrigerator guarantees the temperature, but humidity and gas cannot be guaranteed.
Ordinary plastic bags cannot seal food, naturally they cannot maintain humidity, and they cannot block the flow of gas.
As such, many plastic bags are not food-specific and may contain toxic substances that endanger human safety.
Qualified fresh-keeping film basically does not contain harmful substances, and can reduce gas circulation and water loss to a certain extent, so it still has a certain fresh-keeping function.
However, its sealing function is very limited, so the preservation effect is not very good.
Food preservation bags are more convenient to use than plastic wraps, and more convenient for food access.
However, its sealing function is not much different from that of cling film, and sometimes even slightly worse than that of cling film.
In shopping malls, fresh-keeping boxes of various colors and sizes have attracted more and more attention.
There is a simple logo on the bottom of the fresh-keeping box: material resin, the highest temperature is 120 ℃, the lowest temperature is -20 ℃.
Experts said that refrigerator fresh-keeping boxes are very good for food preservation. It can ensure that people keep food in isolation and prevent cross-contamination, and it effectively solves the problem of food preservation and uses storage space.
However, experts remind that there are several precautions when using refrigerator fresh-keeping boxes: Take out the fresh-keeping box from the freezer, do not open it immediately, and leave it in the room for 1-2 minutes before opening.
When used in a microwave oven, if the food contains more oil and sugar, it will deform the fresh-keeping box when the temperature rises sharply.
Therefore, it is best to use a microwave oven box to heat the food.
Carbonated drinks (sodas, colas, etc.) have a high degree of bubble-tightness. The sealing ability of the fresh-keeping box is lost. Bubbles or fermented foods, hot foods, etc. cause the sealing performance of the fresh-keeping box to decrease.
Different foods have different storage times. Do not rely solely on the sealing capacity of the fresh-keeping box. It is better to eat as soon as possible.
■ Some foods cannot be put in the refrigerator, and some foods should not be refrigerated in the refrigerator. Recently, relevant experts have conducted classification tests on various types of foods such as vegetables, fruits, meat, eggs, milk, etc. Experiments have shown that the traditional refrigerator has a large range of temperature control through freshness, which affectsBecause of the temperature adaptability of different foods, it is not guaranteed that all foods can be in the best state of preservation.
For example, the optimal storage temperature for apples is 0 ℃?
1 ℃, while cucumber is 7 ℃?
At 8 ° C, if these two foods are stored together, they will “give up the wrong way.” When consumers eat it, most of the nutrition has been “stolen” by the refrigerator.
Therefore, some foods cannot be put in the refrigerator.
Banana: it will turn black and taste bad when put in the refrigerator; bread: the loss of moisture will affect the taste, it is best not to store in the refrigerator in the season when it is not easy to mold, when it must be stored in the refrigerator, it is best to put it in the freezerFresh lychee: Fresh lychee: if left for one day at 0 ℃, the skin will become black and the flesh will smell; mayonnaise: mayonnaise will easily decompose below 9 ℃ and the breeding of bacteria will be easy, so it is best to keep it at room temperature;Potatoes and radishes: If potatoes are stored in the refrigerator, most of them will affect the taste, so they should be stored indoors without sunlight; if the radishes are kept in the refrigerator for a long time, the color and taste will be affected; carrots and tofu: if the carrots are in the refrigerator,Water will freeze, affect texture, and nutrition will be lost. Tofu is best eaten immediately after purchase. Tomatoes: Tomatoes are frozen in low temperature, the flesh is blistered, it is easy to rot, or the phenomenon of spalling, black spots on the surface,Undercooked, no umami taste, severe rancid rot; ham: If the ham is stored in the refrigerator at low temperature, the moisture in it will freeze, and the aunt will precipitate，The ham is agglomerated or loose, the flavour is bad, and it is easy to rot. Chocolate: After the chocolate is stored in the refrigerator, it is taken out again. Under this condition, a layer of white frost will be formed on the surface, which will easily become moldy and lose its original taste.
A refrigerator is not a food safe, a storage safe.
Many diseases happen to be caused by stale or contaminated food in the refrigerator.
When people store food in the refrigerator, the phenomenon of mixing raw and cooked food often occurs, which causes the food to be contaminated or deteriorated, resulting in recontamination of the food.
The temperature of the refrigerator freezer is generally 0 ℃?
About 5 ℃, this temperature has a significant inhibitory effect on the reproduction of most bacteria.
However, some psychrophiles, such as E. coli, typhoid, and Staphylococcus aureus, are still very active.
Their massive reproduction naturally causes food spoilage.
Therefore, after eating such foods, there will be systemic symptoms such as nausea, vomiting, abdominal pain, diarrhea, and dizziness.
This is what people do not know about “food poisoning in refrigerators”.
In order to prevent “food poisoning in refrigerators”, families can consider choosing a low-temperature freezer at -18 ° C, which has better effects on household food preservation and storage, and reducing food recontamination.
Refrigerated food should not be kept in the refrigerator for too long. Generally speaking, bacteria are cold-resistant and heat-resistant, and they die quickly at high temperatures.
During the use of the refrigerator, the interior of the refrigerator must be kept clean and hygienic for a long time. Raw and cooked food must be kept separate and should not be left for too long.