In storage, first of all to ensure the storage conditions. Appropriate storage temperature is about 0°C, relative humidity is 60%, and proper ventilation is required. There are four main methods: The first is spontaneous air-conditioning storage. The method is to use 0.007 mm thick polyethylene film, made of 70 cm X 50 cm plastic bags, each bag selection of fresh dates 15 kg. When installing jujube, please be careful to put it gently, and do not break it. Seal it immediately after installation. When sealing, it can be tightly tied with a rope, or it can be heat-sealed with an iron. In general, the heat-sealed sealed packaging has the best storage effect. After jujube bagging, it should be stored in a cool pergola and placed on a shelf 60-70 cm high above the ground. Every 4-5 bags, leave a ventilation sidewalk. Early storage should pay attention to heat, the lower the temperature within the shed, the better, to avoid the fermentation of fresh jujube; winter temperatures dropped to 0 °C, jujube will not freeze. In addition, care must be taken to prevent rat damage and corruption during storage. The second method is to store jujube in small packages. The method is to use 0.007 mm thick polyethylene film, made of 60 cm X 50 cm plastic bags, each bag of 5 kg of fresh dates selected, the bag is equipped with a suction hole, after the seal out of the bag of air, under normal conditions That is, under the conditions of 27°C in the storage temperature and 70% to 90% relative humidity, storage for 9 months can keep the fruit plump, and the meat quality, color and flavor are normal. The third type is the cold storage method. The method is to select 50% of the colored jujube and put it in a plastic bag with a capacity of 0.5-1 kg. Two to three holes with a diameter of 3-4 mm are punched on both sides of the plastic bag. The selected good dates should be soaked in 2% calcium chloride solution for 30 minutes before being moved to a cold room with a temperature of 0°C and a relative humidity of about 60%. The fourth is fresh frozen preservation preservation method. The method is to first put fresh dates into plastic bags, each containing 1-2 kilograms, sealed after packaging, and do not break the inner package when packaging. In large quantities, we must also use wooden boxes or bags, packaging, packaging is also a large amount of not more than 20 kg. Fresh frozen chilled jujube shall be stored in cold storage in time with the collection, on-demand, and packaging, and the temperature shall be around -15°C, and be kept frozen at 0°C after freezing. When the library is released, the frozen jujube must be reconstituted, that is, the frozen jujube is soaked in cold water for about 30 minutes. In this way, the frozen jujube can be restored to its original shape and maintain the unique flavor of the fresh jujube.
Solar Stove For Bbq ,Solar Stove,Solar Oven For Barbecue
Glass Tube,Lab Glassware Co., Ltd. , http://www.nsglasstube.com