How to make bananas fresh

Bananas are a popular fruit and many people love to eat them, especially those with poor intestinal function. Many people who have bought bananas know that bananas are not very easy to preserve. As long as the temperature is a little hotter or colder, the bananas will deteriorate and go bad. So, is there any way to keep bananas fresh all the time? Here's a method that might work for you.

1. As long as you store bananas and apples together, the bananas will turn yellow soon and become ripe and delicious.

In addition, there is another way to preserve bananas without losing their deliciousness: peel the ripe bananas, wrap them in plastic wrap and freeze them. When you want to eat them, you can eat them directly without thawing them.

2. Bananas are best stored between 8 and 23 degrees Celsius. High temperatures will cause them to overripe and change color, while low temperatures will cause them to frostbite. Therefore, place them in a cool and ventilated place when the weather is hot, and wrap them in newspapers or other items when the weather is cold.

3. Bananas ripen quickly. It should be placed in a cool, dry and ventilated place indoors. The effect will be better if hung in the air. When storing in winter, the ambient temperature cannot be lower than 11℃, otherwise frostbite is likely to occur. Be careful not to put bananas in the refrigerator, otherwise the flesh will turn dark brown and taste bad.

4. Environmental conditions for fresh-keeping storage

(one)

Temperature: The banana preservation, storage, transportation and ripening process are most affected by temperature, which is also a sensitive factor. After harvesting, banana fruits are stored in an environment of 15~30℃ and relative humidity of 85~95%. The higher the temperature, the faster the ripening period. When the temperature is 25~35℃, they can mature in 3~5 days.

Under the condition of high temperature of 40~40℃ and low temperature of 10~9℃ for 1~2 days, the fruit surface will be slightly damaged. After ripening, the sweetness and fragrance are still close to normal, but the quality has been significantly reduced, and the skin is yellow with gray. When the temperature is above 45℃ and below 8℃, banana fruits will be severely damaged and the peel will turn black. At high temperatures above 50°C and low temperatures between 7 and 5°C, the peels of most bananas will turn black in 3 to 6 days, becoming difficult to ripen and rotting.

Many experiments and practices have proved that the most suitable storage temperature for bananas produced in our area is 11-13°C. With high technical measures and conditions, they can be stored fresh for 5-6 months without rotting. Constant temperature is good for preserving food, while variable temperature is not.

(two)

Relative humidity: The purpose of increasing the relative humidity of the banana storage environment is to effectively reduce the evaporation of fruit water and avoid various adverse physiological effects caused by fruit wilting. Under the condition of effective use of preservatives, a relative humidity of 98~100% in a suitable refrigerated condition (12~13℃) is ideal for preserving bananas.

(three)

Gas composition The gas composition in the fresh-keeping storage environment is an important factor affecting the fresh-keeping storage effect of bananas. Under certain temperature conditions, the storage time can be extended by adjusting the gas composition of the storage environment. The main components in the storage environment are carbon dioxide, oxygen, nitrogen and ethylene, and the gas regulation is mainly the ratio of carbon dioxide and oxygen. During fresh-keeping storage, banana fruits of different varieties or the same variety from different origins require different ratios of carbon dioxide and oxygen.

For example, Williams bananas can be stored for 5 weeks at 20°C with 5% carbon dioxide and 3% oxygen. They can be stored for 4.5 months (138 days) at 0% carbon dioxide and 3% oxygen, and can mature normally when moved to the air. A single fruit can be stored for 6 months at 5% carbon dioxide and 3% oxygen, and the storage time may be longer if there is a suitable storage temperature.