The maturity of chestnut varies with the origin and variety, and it is generally appropriate to harvest it when it is fully mature. In addition, pay attention to the weather when harvesting, and do not harvest in rainy days or after rain when Chu Qing and dew are dry. Premature harvesting or one-time chestnut bract harvesting will not only affect the increase of single-grain weight and quality of chestnut, but also be intolerant of storage.
2. Select the fruits
Select the chestnuts with 1% salt water to eliminate the pests and diseases, as well as the immature empty and shriveled chestnuts, which is beneficial to the storage and preservation of chestnuts.
Newly-harvested chestnut fruits should not be stored immediately. They should be spread out in a cool and ventilated place to dissipate respiratory heat and lose some water, commonly known as "sweating", and the fruits treated by "sweating" can be stored.
Several daily methods for preserving chestnuts
1. Sandy soil preservation
Naturally, the best and simplest method for preserving chestnuts is sandy soil preservation, that is, finding a clearing to dig out a part of sandy soil and burying fresh chestnuts in the sandy soil, which can keep them fresh for a long time. If it is inconvenient to dig, you can take the dry and wet sandy soil back to the container and bury it. This method is more suitable for mass storage of chestnut.
after the harvested chestnuts are dried in the air for 1-2 days, they are buried in the sand, pressed tightly and tightly, and airtight. This method can be preserved for 2 ~ 3 months.
2. Plastic bag indoor storage at room temperature
Soak the sweaty chestnut in 5 times of 7% thiophanate methyl for 5 minutes, take it out and dry it, put it in a plastic bag with 5 cm× 6 cm holes with a diameter of 1.5 cm on both sides, and put it in a well-ventilated room without pressing it.
This method emphasizes plastic bags instead of cloth bags. This method can store chestnuts for more than one month, and the chestnuts treated in this way have sweet and crisp meat and unique flavor when eaten raw.
3. Air-dry in a cloth bag
Spread the fresh chestnuts out in containers, dry them in a cool and ventilated place for 2 ~ 3 days, and then put them into a cloth bag, which has good air permeability. Never use plastic bags.
hang it in a cool and ventilated place, and shake it once or twice a day. This method can generally keep chestnuts for 4 months.
4. Store in the refrigerator
Take half a basin of cold boiled water, add 1 tsp of salt, and then soak the chestnuts in it for 3-5 minutes for simple sterilization. After soaking, rinse one with cold boiled water without salt, put it in a container and spread it out to dry for 1-2 days < P > When the chestnut shakes, it can be packed in plastic bags, tied tightly and stored in the cold room of the refrigerator.
However, chestnut is a stubborn seed and can't be stored at low temperature below ℃, so the suitable temperature for cold storage method is usually 1-4℃.
5. Fresh storage with cattail
Put cattail in a bamboo basket and store it in a cool room. In the early stage, it is beneficial to water conservation and nutrient accumulation of chestnut fruit, and plays a certain role in preservation. (about 4 days)
6. Storage in jar jar
Put the chestnut fruit into a dry and clean jar or jar with narrow mouth (never use a jar or jar filled with wine). When it is 8% full, fill the jar (jar) with straw, and then turn the jar (jar) upside down on a wooden board or dry ground.
This storage method is suitable for a small amount of chestnuts, and it can keep fresh until the Spring Festival.
7. Dry storage or hanging storage method
Boil chestnut fruit in boiling water for 5 minutes or soak it in clear water for 2-3 days, take it out and dry it, then put it in a ventilated container (basket, net bag or perforated plastic bag) and let it dry.
this method can be stored for a long time, but the disadvantage is that when the storage time is too long, the chestnut loses more water and is not as delicious as fresh chestnut.