1, leafy vegetables are usually placed vertically.

The best preservation environment: 0℃ ~ 4℃, not lower than 0℃. Optimal storage time: 24 hours.

Use old newspapers, spray some water on the leaves, then wrap them in newspapers and put them upright with their roots down in the refrigerator (if placed horizontally, vegetables will consume a lot of energy in order to restore their original state as much as possible, so vegetables placed horizontally are more likely to turn yellow. The chlorophyll, nutrients and water content of vegetables stored vertically are better than those stored horizontally, and the longer the storage time, the greater the difference. However, it should be noted that if there are water drops on vegetables, they are easy to rot, so first put the vegetables in a ventilated place to dry slightly or wipe off the water.

As for vegetables preserved at room temperature, they should be wrapped in 2~3 thick newspapers and kept in a cool place. In addition, remember not to soak vegetables in water or put them in the windward to avoid the loss of vitamin C.

2. The leafy vegetables are placed horizontally.

There are Chinese cabbage, Chinese cabbage, lettuce and Chinese cabbage. The corruption of meatball dishes begins from the heart, and the slight corruption is often imperceptible to the naked eye. Put the cabbage upside down or sideways so that the roots don't touch the ground. The outer layer of leaves is cold-resistant and collision-resistant, which can protect Chinese cabbage. Just tear off the outer yellow leaves when eating.

Second, the rhizome

Best preservation environment: placed in a cool place, not suitable for refrigeration. Best storage time: about two days.

Not all vegetables are suitable for refrigeration. Generally speaking, vegetables with high sugar content and hard and thick skin, such as sweet potato, lotus root, radish, taro, potato and so on. It is more suitable for storage in the shade, but it is easier to deteriorate or germinate in the refrigerator.

However, these vegetables are different when stored at room temperature. For example, onions and carrots with soil can be buried in the soil of flowerpots to expose their leaves and can be preserved for a long time. Another example is potatoes, onions, garlic, onions and so on. You can put it directly into a net bag or a plastic bag with air holes without cleaning and put it in the dark. However, if you insist on putting potatoes in the refrigerator, you can also wrap them in newspaper and put them in a sealed bag for refrigeration. Meanwhile, you can put an apple in the potato. Because apples release ethylene, which makes other fruits and vegetables aging, they can prevent potatoes from sprouting to some extent.

Third, fruits and vegetables.

The best preservation environment: about 65438 00℃, not less than 8℃. Storage time: 3 days.

Vegetables such as green beans and cowpeas can generally be stored in plastic bags or fresh-keeping bags for 3 days, but after a long time, brown spots will gradually appear, which is not beautiful. If you want to keep it longer, you'd better wash it, blanch it with salt water to drain it, and then put it in the refrigerator for freezing. But remember to drain the water so that the frozen beans won't stick together. In addition, I want to remind you that it is best to wash the fruits and vegetables before cutting them, otherwise they will lose a lot of nutrients.

Warm reminder:

(1) List of how long food can be kept in the refrigerator.

Fresh eggs: frozen for 30 days, cooked eggs: frozen for 3 days, fish: frozen 1 day.

Beef: refrigerated 1~2 days frozen for 30 days sausage: refrigerated for 9 days, frozen for 60 days chicken: refrigerated for 2 days.

1. Frozen food should not be stored after thawing. Frozen meat, frozen fish, frozen chicken and frozen duck, their tissues and cells will be destroyed by the crystallization of water. Once thawed, a large amount of protein will ooze from the damaged tissues and cells and become food for bacteria to multiply.

2. Meat food, cooked food and frozen food are prone to a large number of bacteria.

(2) Food not stored in the refrigerator

Suitable storage temperature of 1, bananas, lemons, pumpkins, etc. It is 13℃ ~ 15℃, and it is easy to turn black and rot at low temperature. Ham is also not suitable for cold storage, because it will precipitate fat, resulting in caking or looseness of ham meat. After cold storage, the surface of chocolate is easy to frost and lose its original flavor;

2, bread and other pasta should not be stored in the refrigerator, otherwise it will lead to the slow association of the linear part of starch, gradually harden, and appear "aging" phenomenon. Cucumber and green pepper will turn black, soften and taste bad if they are put in the refrigerator for a long time, and the cucumber will become sticky, because the temperature in the fresh-keeping room of the refrigerator is generally around 4℃ ~ 6℃, while the suitable storage temperature of cucumber is 10℃ ~ 12℃, and the suitable storage temperature of green pepper is 7℃ ~ 8℃.

(3) Need special care

1. Garlic yellow can be wrapped in the leaves of fresh Chinese cabbage and kept fresh for several days in a cool place without touching water.

2. Tomatoes should be placed head-down when stored, and do not overlap, because the overlapping parts are easy to rot;

3. Put the potatoes and apples together and put them in a cool place. Because apples release an ethylene gas that can age other fruits and vegetables, it can inhibit potato germination;

4. When storing taro, first remove the soil, dry the taro, wrap it in dry newspaper, and then put it in a cool and ventilated place;

5. When cucumbers, peppers and lettuce are kept fresh, they can be put into plastic bags, the bag mouth is tightly tied and placed in a cool and dry place, which can generally be kept fresh for about 10 day;

6, ginger is not suitable for cold storage, because it has been fiberized and easy to lose water. Can be stored in wet but not wet fine sand;

7. Wash off the soil when fresh lotus roots are fresh, put them into a basin, fill them with clear water, soak them, and change the cold water once a day or two.