Food storage method
I. Storage of fresh food
1. vegetables
Generally speaking, the suitable storage temperature of vegetables is 0℃- 10℃. Such as cucumber, bitter gourd, cowpea and pumpkin, should be stored at about 10℃ and not lower than 8℃. The suitable storage temperature of most leafy vegetables is 0℃-2℃, usually not lower than 0℃.
However, it should be noted that the green leafy vegetables must be wrapped and put in the refrigerator, not close to the inner wall of the refrigerator to avoid frostbite, and it is best not to store them for more than three days. Beans, eggplant, tomatoes and green peppers can be stored at low temperature for 4-5 days. Potatoes, carrots, onions, white radishes, cabbages and the like can be kept longer. Of course, it is best to put it in the refrigerator. If it is inconvenient, you can also put them in a cool and ventilated place at home.
2. Fruit
Most fruits need to be put into the freezer. If stored at room temperature, strawberries and grapes can be kept for a day or two, and apples and oranges can be kept for more than a week. Some tropical fruits, such as bananas and mangoes, don't need to be kept in the refrigerator.
3. Fish and meat
Fish and raw meat should be packed in advance into an edible amount and put in the freezer. Seafood and livestock and poultry meat are best separated as far as possible, not scattered.
4. staple foods such as rice and flour
Rice, noodles, beans and other raw staple foods should generally be placed in a cool and ventilated place, which can prevent moisture. In addition, rice is best placed in a ventilated and heat-dissipating place, and beans and flour should be sealed.
5. milk
Fresh milk (pasteurized milk) has a short shelf life, usually within one week. If the lid is opened, drink it as soon as possible; If you don't drink it for a while, seal it and put it in the refrigerator. However, it is best to drink it in one day.
Ultra-high temperature sterilized milk has a long shelf life and can also be stored at room temperature. However, if you open it, you'd better drink it right away.
Second, cooked food.
Cooked cooked food has different storage conditions according to different food types. Usually, staple foods such as rice, steamed bread and bread can be put in the refrigerator if they are only stored for a short time. If it is stored for more than three days, or if you want to keep the soft and waxy taste of the staple food, it is best to put it in the freezer.
There are three kinds of cooked meat.
First, floss, dried meat, bacon, ham sausage and canned food can be preserved at room temperature and eaten as soon as possible after opening. You'd better put the unfinished meat in the refrigerator.
Secondly, braised pork products, such as braised pork and braised pig's trotters, need to be refrigerated all the time, and the refrigeration temperature is below 4℃. If you want to keep it for a long time, you can also keep it frozen, but the taste will decrease after thawing.
Third, home-cooked dishes with meat, such as shredded pork and stewed meat, also need to be kept in the refrigerator, with the temperature below 4℃.
After the vegetables are ready, try not to leave them for the next meal. If you can't eat it all at once and don't want to throw it away, you should set aside a part and put it directly in the refrigerator when you are out of the pot, which can be kept for 1 day.
Soup and soup are the most difficult to preserve. Many people often stew a large pot of soup. Chen Jian suggested that you should eat as much as possible when drinking soup, so that the unfinished soup is easier to preserve. If you eat the remaining soup the next day, you can cover it and put it in the refrigerator to keep it below 4℃. If you want to eat in two days, put it in a sealed box and put it in the freezer.
Tips for staying healthy in winter
1, breathe.
In winter, people are used to closing the doors and windows of the house tightly, which will cause the indoor carbon dioxide concentration to be too high. If you add the decomposition products of sweat and the bad gas discharged from the digestive tract, the indoor air will be seriously polluted.
People will have dizziness, fatigue, nausea, loss of appetite and other phenomena in an environment lacking fresh air. In order to prevent the above phenomenon, please be sure to keep the indoor air circulating and fresh. If possible, please go to some places with high oxygen content for oxygen therapy, which is beneficial to increase lung ventilation and speed up metabolism.
Step 2 go to bed early
Sun Simiao, a famous doctor in the Tang Dynasty, said: "It is not advisable to get up early and come home late in winter, which offends Han Wei." Go to bed early to nourish yang, and get up late to solidify yin essence. Therefore, it is necessary to ensure adequate sleep in winter health preservation, which is conducive to the accumulation of latent yang and yin and body fluid; Remember to "raise Tibet" in beginning of winter's aftercare.
Nowadays, many people are used to staying up late, not only because of their own pressure, but also because of some external factors. However, in such an environment, we still have to choose to go to bed early. Only in this way can winter be free from diseases.
Step 3 sweat a little
Exercise muscles properly, sweat and keep fit in winter. Exercise should be combined with exercise, and it is good to run and do exercises as long as you sweat slightly, which is contrary to the way of hiding the sun in winter.
Step 4 protect your feet
Foot health in winter is fitness. Insist on washing feet with warm water every day, and it is best to massage and stimulate the acupoints of both feet at the same time. Walk for more than half an hour every day to exercise your feet. Stick to rubbing the soles of your feet in the morning and evening to improve blood circulation.
Step 5 drink plenty of water
Although sweating and urination decrease in winter, maintaining the normal operation of brain and body organ cells still needs water nourishment. In winter, the daily water supply should be above 2000-3000 ml.
In fact, it is necessary not only to replenish water in winter, but also to replenish enough water to the body every day, so as to ensure the balance of water and oil in the body and let all toxins be excreted.
Principles of healthy eating in summer
First, we should be timed.
Eating on time in summer, if you want to eat, you can't eat, if you don't want to eat, you can't eat, which will disorder the physiological function of the spleen and stomach and induce stomach problems.
Second, be light.
In summer, when the temperature is high, people sweat a lot and drink a lot of water, the gastric acid is easily diluted, the secretion of digestive juice is relatively reduced, and the digestive function is weakened, resulting in loss of appetite. If you eat too much greasy food, it will hurt your spleen and stomach and affect the digestion and absorption of nutrients. Therefore, we should eat light foods such as mung beans, watermelons, buckwheat, jujube, chicken, duck, goose, crucian carp, soybean milk and pears in summer.
Summer diet should pay attention to the rationality of food structure and collocation. Flour, rice and coarse grains should be well matched, and coarse grains should eat three meals a week; Thin and dry should be well matched. Eat pasta and soybean milk in the morning, rice in Chinese, dry rice in the evening and porridge in the evening. Meat dishes should be well matched with vegetables, mainly vegetables such as vegetables, melons and beans, supplemented by meat and shrimp.
The fourth is the appropriate medicine porridge.
Summer is not suitable for tonic, so it is best to eat less greasy food and eat more foods that clear away heat and relieve summer heat, such as mung bean porridge, bean porridge, lotus leaf porridge and mint porridge.
Five taboos against cold.
In hot summer, eating some cold food or drinking some cold drinks will make people feel comfortable, but these foods should not be eaten too much. Eating too much will damage the spleen and stomach, affect appetite, and even lead to gastrointestinal dysfunction. Especially for the elderly and children, we should pay more attention.
Sixth, avoid being full. Don't eat too much in summer, especially dinner. Especially for the elderly and children, their digestive ability is not strong, which is even worse in summer. They eat too much and can't digest it, which is easy to damage the spleen and stomach and lead to stomach problems.
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