First, harvest in time. Timely and nondestructive harvesting is the key measure to prolong the storage life of plums. When the peel of plum changes from green to the unique color of this variety, there is a thin layer of fruit powder on the surface, and the meat quality is still hard, it is the best harvesting time. When the fruit maturity is inconsistent, it should be harvested in batches.
Second, pre-cooling. In order to prevent the occurrence of brown rot and soft rot, the plum fruit must be cooled to below 4℃-5℃ within 3 hours and 24 hours at the latest. Pre-cooling method: put the fruit into a warehouse at 0.5℃- 1℃ for cooling treatment.
Third, packaging. After the precooled plums are selected and graded, they are packed with lined wrapping paper or turnover boxes with plastic plates.
Fourth, save.
1, cold storage: the temperature of the cold storage is 0℃- 1℃, the relative humidity is 85%-90%, and it is well ventilated.
2. Ice room storage: flatten the cellar bottom with crushed ice, then pile the precooled fruit baskets (boxes) on the ice, and fill the layers with crushed ice, or fill the stacks with crushed ice. After stacking, cover the fruit pile with crushed ice, then cover it with plastic film, and then pile up heat insulation materials such as sawdust with a thickness of 70- 100 cm on the film. This method must close the cellar door and control the cellar temperature at 0℃-65438 0℃.
3. Modified atmosphere storage: ① Modified atmosphere storage. Plums are sealed in a polyethylene film bag with a thickness of 0.025mm, and can be stored for 70 days under the conditions of 0℃- 1℃, 7%-8% of carbon dioxide content and 0/%-3% of oxygen content. ② Modified atmosphere refrigeration in small packages. Prunes harvested at the right time are removed from stems, pests and damaged fruits, packed in polyethylene film bags, each bag is 1- 1.5 kg, sealed and stored at-1℃ for 2-3 months.
How many days can plums be kept without being kept in the refrigerator?
Look at the color of plums. If they are blue, they can be kept for a week. If it is purple, it can be kept for 3-4 days.
I want to keep plums fresh for a longer time. How should I raise them?
Usually, the general fresh-keeping edible varieties are harvested when the fruit is close to full maturity; Suitable for harvesting processed fruits in hard ripe stage; Brittle plum is harvested at hard ripe stage; Prunus mume should be picked 3-4 days before full maturity. Harvesting method. Before export or storage, the fruit is precooled to 4-5℃. In order to prevent mechanical damage, the packaging container should not be too large, 6- 10 kg per box. Plum fruits should be precooled as soon as possible before packaging, and the best precooling method is 0.5- 1℃ cold water. Storage method. 1, cold storage. The storage temperature is 0- 1℃, and the temperature is about 90%. Prunes stored at-1℃ for 45-60 days will be browned due to low temperature, so we should pay attention to avoid this temperature. Plums should be disinfected with formaldehyde or sec-butylamine fumigant before storage. 2. Low temperature modified atmosphere storage is packed in plastic bags. Pack the fruit with 0.025mm thick polyethylene film. 5 kg per bag, after filling, tie the bag mouth tightly and store at 0-65438 0℃. Under the conditions of oxygen concentration of 1%-3% and carbon dioxide concentration of 5%, it can be stored for 10 week.
I want to keep plums fresh for a longer time. How should I raise them?
Plastic wrap refrigerator soaked in water
How to store fresh plums?
I am from Yongtai. In addition to the refrigerator, I can also put a plastic mold in the carton every time, then put the plums in, then cover the plastic mold, and then punch a number of small holes with a dental needle (to prevent the water from drying up, the water will get hot without punching a few holes). In this way, it won't break for half a month. Another way is to cover plums with wet sand (not water sand). Both of them seem to be picked from a tree. Please try it.
How to preserve the bought plums so as not to be brittle?
Buy it back, wash it with clear water, add some salt and soak it there so that it won't become brittle, and the salted plums taste good.
Can plums be kept in the freezer of the refrigerator? How many days at most?
Wash the plums with detergent first, then dry them, put them in fresh-keeping bags and keep them in the refrigerator for a long time.
How to keep the plums fresh in the supermarket in summer?
Preservation method of lychees: Cut lychees one by one (leaving a little pedicle), try not to damage the shell, then mix them with a teaspoon of salt and water, soak them in salt water, pick them up, then put them in plastic bags and put them at the bottom of the refrigerator. Within a week, litchi can still maintain its original color and flavor.
Plums are best kept in the shade, not washed.
Can plums be kept in the freezer of the refrigerator? How many days at most?
It is best not to freeze the fruit (it will freeze out the essence), but to refrigerate it. Moreover, frozen fruits should be packed in fresh-keeping bags, otherwise the water will be lost, and the fruits will not taste good at that time (for example, apples may be peeled off). It is best to eat frozen fruits within one week, and the longest is not more than one and a half months (in the case of fresh-keeping bags).