How to preserve and store red raisins? In daily life, red raisins are common fruits listed in early summer and autumn every year. Red raisins are tender and juicy, sweet and delicious, and are deeply loved by people. Let's see how to preserve and store red raisins.

How to keep red grapes fresh 1 1? Don't wash all the newly bought grapes. The surface of grapes has natural protection, and if washed, it will quickly oxidize and deteriorate. Wash as much as you should.

2. Many friends can't wait to get rid of the branches when they buy fresh grapes, which is convenient for you to clean and attract insects. Because after removing the pedicel, the grapes will be exposed to the air, which will not only attract insects, but also accelerate oxidation.

3. Seal it with plastic wrap. Grapes don't need to be washed, put them directly on the plate and seal them with plastic wrap to prevent a lot of air from slowing down oxidation.

4. Refrigerate in the refrigerator. If the grapes are washed clean, they must be refrigerated to slow down the deterioration as much as possible. The temperature should not be too low or too high, just around zero.

5. Don't soak in water. When you wash with water, there are many bubbles in the water. If you soak grapes in water for a long time, they will go bad more easily.

6, can not be stacked, if you find that some grapes have gone bad, you should throw them away separately. If they are stacked together, the grapes will also deteriorate and deteriorate.

How long can red grapes be preserved?

1. Under normal indoor temperature, it can be stored in ventilation for seven days. After a long time, it will attract small flying insects and start to be damaged.

2. If it is stored in the refrigerator for two weeks, there is no problem, but it should be put in a plastic bag, because the refrigerator is a dehydrator. It is best to remove some bad fruit stalks and put them in (this is a professional preservation method).

Fresh-keeping skills of Hongti fresh-keeping warehouse

1. Before storage, the fresh-keeping cold storage of red grapes should be disinfected and precooled, and the grape warehouse should be disinfected;

2. Storage and palletizing of grapes. After fruit picking, it should be precooled in stages, and it should not be stored too much at one time, generally not less than 65,438+00% of the total storage. For example, there are always 200 tons in the cold storage and 20 tons at a time. Grapes should be placed in the cold storage, with reasonable layout, no waste of space and good ventilation. At the same time, the flood design of red fresh-keeping cold storage is also very important.

Three, during the management of grape cold storage, to adjust the temperature, humidity and ventilation in the red grape cold storage.

How to keep red grapes fresh and stored II. Preservation methods of red grapes.

1. Red grapes are stored in fresh-keeping bags.

Red grapes will be preserved in special fresh-keeping bags after harvesting, such as modified atmosphere and temperature-permeable bags of PVC and PE, which are the most suitable fresh-keeping bags for red grapes. The quality of red grapes in these fresh-keeping bags has not changed much, and the grape stems always remain bright green, so the water of grapes will not be lost. Bagged grapes can be kept fresh for several months by putting them in special warehouses.

2. Preserve red grapes with preservatives.

Red grape is a grape variety that is particularly sensitive to oxygen. When storing, CT compound special preservative can be used. The dosage of preservative should be seven bags per five kilograms of grapes, and a layer of temperature-regulating fresh-keeping film should be added. This method can also make the shelf life of red grapes as long as four or five months.

3. Red grapes can be refrigerated.

It is also a good way to preserve red grapes in cold storage. After it enters the cold storage, it needs to be precooled in the environment of MINUS one to two degrees, so that the temperature of red grapes drops rapidly. After 24 hours, the temperature of red grapes can drop to about zero. At this time, it can be directly packaged and stored in the cold storage area, or it can keep the red grapes from deteriorating for three or four months.

How to keep red grapes fresh and stored 3. How to distinguish red grapes?

Distinguish between true and false red mention

Pinch red raisins with your hands. If skin and meat are hard to separate, it is Zhen Hong raisin. If the skin and meat are easy to separate, it is a fake red raisin.

Distinguish between imported and domestic red grapes

Distinguish between imported and domestic red raisins. Compared with domestic red raisins, imported red raisins have larger particles, while authentic American red raisins have light red color and thin stems, while red raisins with purple color and thick stems are likely to be "fake" American red raisins.

Distinguish fresh red grapes

See if the rattan is fresh, and the fresh rattan is the fresh rattan; Finally, see if there is a layer of white fog on the raisins, indicating that the red raisins are fresh.

How to peel raisins quickly?

1. When peeling raisins, tear them upward from the bottom of the raisins and peel them completely. This is because the skin of raisins is divided into several layers, and the closer it is to the top, the fewer the layers are, so it can be peeled off from the bottom of the thickest cortex.

2. Put raisins in the freezer for 4 hours, take them out and put them in normal temperature water for 4-5 seconds, then peel them.

3. soak raisins in hot water, which can also make raisins easier to peel.

4. Stripping with a special stripper.

How to wash red grapes?

1, cut the raisins one by one from the pedicle position with scissors. The pedicle is reserved to prevent impurities from entering the pulp of raisins during soaking.

2. Rinse with water first, then put the raisins in a bowl and sprinkle with a layer of starch.

3, pour warm water, it is best to completely soak the raisins. Stir and scrub by hand to completely dissolve starch and promote the friction between starch and grapes, so as to achieve the purpose of cleaning grapes.