Construction and storage method of banana cold storage

Construction and storage method of banana cold storage

The construction and storage method of banana cold storage, bananas have high nutritional value, and we often buy a handful of bananas back, which seems to be racing against time. Eat bananas before they become discolored, soft and bad. Let's take a look at the construction and storage methods of banana cold storage.

Construction and storage method of banana cold storage 1 Raw bananas can be ripened with ethylene gas in a closed ripening room, and the concentration of ethylene is 200 ~ 500 ppm. With ethylene ripening, packaged banana fruits can be ripened in the ripening room, which saves labor and effort. This is the method used in large ripening rooms abroad. However, when the concentration of ethylene in the air reaches about 3%, it is easy to explode, so attention should be paid to safety during operation.

Traditional ripening methods of bananas;

1, raw bananas can be ripened with great fragrance. This method was often used in the past, and the method was simple. Is to put a lot of raw bananas in a small room, and then light incense in it. When the smoke inside reaches a certain concentration, you can close the doors and windows. Take out the bananas in two days, and they will be ripe in about five days.

2. If you are ripening in your own home, you can use apples or pears. Practice: put bananas in plastic bags, apples or pears in pockets and put them in warm places. It usually takes two to three days to ripen naturally.

Design parameters of banana cold storage;

Bananas can be stored in cold storage with controlled atmosphere. It is advisable to keep the temperature of cold storage at 1 1℃- 15℃, the humidity at about 85%, the oxygen at 2%-4% and the carbon dioxide at 3%-5%. Bananas can't ripen normally when stored below 1 1℃, and can't turn yellow normally when the temperature exceeds 26℃. Bananas can be stored in suitable cold storage environment, and the shelf life can reach about 14 days.

Storage skills of bananas

Clear water washing

In fact, all the bananas you just bought have ripening agents on their surfaces. If it is not cleaned in time, it will be cooked in a few days. If it is not eaten in time, it may be cooked and wasted.

The solution is to wash the bananas bought in the market with clear water several times, and then wipe the water on the surface with a dry rag, so that the bananas will be stored for a longer time.

hang up

Many people are used to putting a bunch of bananas flat on a table or plate. In fact, this practice is easy to make the banana at the bottom be oppressed by the banana at the top for a long time, and it is easy to produce chemical changes and black spots.

The best way is to tie the roots of bananas with ropes and hang them up, which can greatly reduce the compressed area, make bananas last longer and look more beautiful on the surface.

Construction and storage methods of banana cold storage 2 What are the characteristics of banana cold storage?

1, banana cold storage is easy to operate and maintain.

The temperature of refrigeration equipment is controlled by microcomputer, which can start and stop automatically without special supervision, and the supporting technology is economical and practical.

2. Bananas have a long shelf life in cold storage.

For example, apples are kept fresh for 6 months, grapes are kept fresh for 7 months, and garlic moss is kept fresh for 7 months, and the total loss is less than 5%. Generally, the origin price of grapes is only 1.5 yuan/kg, but the price can reach 6 yuan/kg around the Spring Festival. The service life of banana cold storage can reach 30 years, and the economic benefit is very remarkable. The investment was effective that year.

3. Banana refrigeration is widely used.

It is suitable for the storage and preservation of various fruits, vegetables, flowers and seedlings in the north and south of China.

How to preserve bananas?

1, calcium peroxide preservation method.

Powdered or granular calcium peroxide and bananas are put together in a container, and after absorbing water, oxygen is slowly released to absorb ethylene gas emitted by bananas, which can keep bananas green and hard for 60 days. Bananas kept fresh in this way are very beneficial to transportation in the north.

2. Place it in a cool and ventilated place.

Of course, keeping bananas fresh at home is simple and convenient. Just put the bananas you bought in a cool and ventilated place. Never put it in the refrigerator (it will turn black due to frostbite), and don't put it with other fruits that are easy to ripen, so as not to overcook bananas and rot quickly ~

3. Gibberellin preservation method.

Spraying 50 mg/L gibberellin solution once 20~30 days before banana harvesting, and cleaning the fruit with more than 20 bacteria recording solution during packaging. Practice has proved that this method has good fresh-keeping effect and can effectively control banana anthracnose.

How to build and store banana cold storage 3 How to choose bananas?

Naturally ripe bananas can smell a fruity smell, while ripe bananas not only have no fruity smell, but even have a bad smell. In addition, if it is a ripening banana, it is easy to turn black and rot.

Generally speaking, the immature banana skin is thick and fleshy, while the mature banana skin is thin and fleshy. The ripe banana peel is bright Huang Guangliang with blue ends, good elasticity and soft and sweet taste.

When selecting, you should look for the correct shape, large and uniform fruit, no defect, no shedding and bright color of the whole banana; In addition, it should be noted that fresh bananas should have smooth fruit surface, no disease spots, no trauma, easy peel, slightly hard pulp, not soft to pinch, sweet, astringent and odorless.

If the skin is black and the meat is soft, or the fruit stalk is black, dry and shriveled, it is likely to have begun to rot and cannot be purchased.

The benefits of eating bananas

1, preventing cardiovascular diseases

When potassium is deficient in the body, arrhythmia, tachycardia and blood pressure will occur, and the role of bananas will begin to play. A banana contains 400 mg of potassium, which can maintain the coordination of normal myocardial contraction, maintain normal neuromuscular excitability, and coordinate myocardial contraction and relaxation functions, thus achieving the effects of maintaining blood pressure stability and preventing cardiovascular diseases.

2. Prevention and treatment of hypokalemia

After exercise, the body excretes a lot of sweat and potassium, which leads to limb fatigue; After a large number of vomiting and diarrhea or long-term use of diuretics, the blood potassium concentration will decrease. At this time, eating bananas is the most ideal potassium supplement food, which can effectively prevent and treat hypokalemia.

3. Anti-dementia

Bananas contain many nutrients, which can promote digestion if eaten regularly. Eating bananas can improve brain power, learning ability, alertness and prevent Alzheimer's disease.

How to eat bananas?

1, the method of banana pineapple juice

Ingredients: 2 bananas, pineapple 1/4, apple 1 each, and proper amount of honey.

working methods

Peel bananas and pineapples, peel and core apples, cut them into pieces of moderate size, and soak the pineapple pieces in light salt water for a while. Put three kinds of fruits into a juicer to juice and season with honey.

2, the practice of banana millet porridge

Ingredients: 50g millet, 30g glutinous rice, banana 1 root, and appropriate amount of rock sugar.

working methods

Wash millet and glutinous rice with clear water and soak for 10 minute. Boil the water in the pot and add the millet and glutinous rice. Bring the fire to a boil, skim off the foam and turn to low heat for cooking. Add rock sugar to porridge. Cook for 2 minutes and turn off the heat.