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Longan is generally produced in Guangdong, China. Fresh longan is juicy and sweet. Everyone likes to eat it very much. However, longan is warm and can't eat more at a time. It's easy to get angry. We can pack the fresh longans that can't be eaten that day in fresh-keeping bags and refrigerate them in the refrigerator. If there are many, we can dry them and store them in boxes. This is how to preserve fresh longans. 1、 Preservation method of fresh longan 1. Put it in the refrigerator
Longan is delicious only when it is fresh. If you can't eat it all at once, you can put it in the refrigerator. Specific operation: pack the fresh longan in a fresh-keeping bag, seal it and put it in the refrigerator. Don't freeze it. Just refrigerate it. Don't put it for too long. Eat it as soon as possible.
2. Sun drying
There are too many fresh longans. If you can't eat them, they will break down. Or if you want to keep them for a long time, you can eat them when you want to eat them. This can be dried to keep them. Dry the fresh longan, put it in the box, cover it with a lid, and often check the preservation status. Don't get moldy and insects. This is how to preserve the fresh longan. 2、 Methods of keeping fresh longan for a long time 1. Temperature control
Fresh longans should be kept for a long time. They can be placed in the refrigerator, and the temperature can be controlled at 4 ℃ ~ 6 ℃. They can be wrapped with mesh fresh-keeping film. At this temperature, longans can breathe without consuming too much energy and can be kept for a long time; However, it should not be piled too thick, which is not conducive to the breathing of longan. In addition, the skin of longan is relatively thin, too many layers are easy to crush.
2. Carton storage
Fresh longan can be air dried and directly packed in breathable cartons in a ventilated, cool and dry place. If there are more longans, remember to add cardboard in the middle to reduce the pressure on the lower layer; If longan can be laid flat, it is the best to avoid squeezing the running water and causing decay and deterioration.
3. Quick freezing
Fresh longan should be preserved for a long time and maintain its inherent taste, so the quick freezing method in the refrigerator is adopted. The quick freezing method in the refrigerator is to reduce the temperature of longan to - 30 ℃ within one hour, and then store it in the environment of - 18 ℃ for a long time. In this way, longan can not only maintain its original appearance, but also have its inherent taste. It should be noted that when eating, thaw it with cold water and eat it immediately. 3、 Effects of eating fresh longan 1. Supplementing qi and blood
Fresh longan has high nutritional value and is rich in glucose, sucrose, protein and iron. Eating longan can not only supplement energy, but also supplement calories, promote the regeneration of hemoglobin and achieve the effect of supplementing blood. In addition, eating longan also has the effect of Tonifying the brain, helping to improve, eliminate fatigue and enhance memory.
2. Calm down
Fresh longan contains a large amount of iron and potassium, which can promote the regeneration of hemoglobin and treat panic, insomnia, forgetfulness and other symptoms caused by anemia. In addition, every 100 grams of longan contains up to 2.5 mg of niacin, which can effectively treat skin inflammation, diarrhea, dementia and other diseases caused by niacin deficiency.
3. Tocolysis
It is good for pregnant women to eat fresh longan. It not only supplements energy and nutrition, but also has the effect of nourishing blood and calming the fetus. Longan is rich in iron and vitamins, which can effectively reduce the sense of uterine contraction and sagging. It has a good effect on the fetus and pregnant women with ultra fast metabolism.
4. Anticancer
Longan has a good anti-cancer effect. Clinical trials have proved that oral administration of crude longan extract can improve symptoms by 90% and prolong life by 80%. Experiments in animals also proved the anticancer effect of longan.
Conclusion: This article introduces in detail the preservation methods and long-term preservation methods of fresh longan, which is very helpful to everyone's daily life. Friends who like it should read it carefully.