May plum season is coming, green plum market time is very short, it is about two weeks, a large number of green plum market, green plum is rich in organic acids and fiber, warm, sour taste, there are raw jin, thirst, lungs, astringent intestines, roundworms and other effects, as well as stomach digestion effect, promote human metabolism, beauty and beauty effect, and promote metabolism effect, prevent melanin accumulation and other effects.
Soaked in plums
There are cultivated plums in all parts of China, but most of the provinces south of the Yangtze River Basin, there are also a few varieties in northern Jiangsu and southern Henan, and some varieties have been successfully introduced in North China. Fresh plums just picked down and astringent and sour, smart Chinese made into dried plum fruit, the taste is sour and sweet, sweet and sour, sweet and dry, how to make dried plum fruit sold in the market?
Prepare the dried sour plums
Plum drying process:
Driing of ome fruit is the use of the reverse Carnot principle, the gas Freon is pressurized by the compressor, becomes a high temperature and high pressure gas (temperature up to 100 ° C), into the indoor side of the heat exchanger (condenser), refrigerant condensation liquefaction release high temperature heat heating drying room air. The materials in the drying room vaporize and evaporate the moisture in the materials through the form of hot air, and the evaporated water vapor is discharged by the moisture drainage system to achieve the purpose of drying the materials. After condensation and exothermic refrigerant through the throttle valve into a low-temperature and low-pressure liquid, due to the sudden decrease in pressure, the liquid refrigerant into the evaporator will continue to absorb the low-level heat energy of the surrounding air and quickly evaporate into a gaseous state, absorbing a certain amount of refrigerant back to the compressor, into the next cycle: its specific steps are divided into three specific steps
Sour plum dryer
Step 1: Coarse salt to remove astringency: plums are soaked in light salt water, soaking time is 5-8 hours, do not soak for too long, otherwise the plums lose nutrients and the fruit is fragile. Or gently scrub with coarse salt to remove the lint and green taste of the epidermis.
Step 2: Air drying: After soaking the plums, clean them, and then place them in the ventilation place to lay flat to dry the water, or you can use a large air cooler to accelerate the drying. The water on the surface of the plum must be completely dried up, and the undried water can easily spoil the food made.
Step 3: Ome Acid: Put the plums in a clean urn, add the salt according to 30 percent of the salt, and marinate for 30 days, at which time the plums turn brown and have water overflow.
Step 4: Sour plum drying:
Bake at a temperature of about 60 ° C for 1 hour, then bake at a temperature of about 50 ° C for 24 hours, then remove and carefully turn to avoid breaking the peel. Place in the drying room for 24 hours over a low heat of about 50°C for 24 hours until the plum flesh is crumpled and brown. To make the finished ume black, the dried ume can be stacked for 3-5 days, and the color will gradually turn black. Coal should not be used as fuel to avoid harmful gases produced during coal combustion from contaminating the product.
The combination of dryer and drying room should be designed with a short temperature rise time and conducive to dehumidification. Generally, the 3P machine should be equipped with a drying room of about 15 cubic meters, the 6P machine should be equipped with a drying room of 25-30 cubic meters, and the 10P machine should be equipped with a drying room of 30-40 cubic meters. The drying room of the dryer uses professional cold storage board material, about 10 cm thick, and the thermal insulation performance is very good. There are many types of agricultural and sideline products, but different products have different characteristics, so through the study of the drying process, it is possible to develop special heat pump products with obvious advantages in comprehensive technical and economic indicators for a certain type or a certain product.
6P plum dryer
Heat pump air energy Ome dryer structure: Dryer is composed of five parts: warehouse, heat pump heating system, condensation and moisture drainage system, temperature and humidity automatic control system.
1, the main structure of the drying equipment in the form of the drying room: the intelligent dryer has an incubator, which is a fully automatic drying equipment, and no one needs to take care of it after setting the parameters, fully enclosed and pollution-free.
2, PLC touch screen intelligent temperature and humidity control box: the use of independent research and development of microcomputer intelligent control system, intelligent control components, PLC programmable control, set temperature and humidity curve program.
3. Heating dehumidifier, hot air circulation fan and moisture exhaust fan inside the baking room; the moisture drainage capacity is strong, the circulating fan has a large air volume and the power consumption is small. The air circulation part is to make the temperature and air flow in the entire drying room uniform, and the intelligent control system is to achieve constant temperature and humidity conditions in the entire drying process, so that the drying quality is very guaranteed.
4, the production of heat source air energy heat pump unit; hot air circulation components, compressor import high temperature resistance, high power, noise.
5. Oven box with thermal insulation effect and automatic moisture drainage device.
6. Temperature and humidity intelligent control device. The evaporation rate is fast, the moisture content is reduced, and the drying rate is accelerated.
9P plum dryer
Comparison of charcoal plum drying and new era innovative heat pump air energy plum drying process:
1. Charcoal plum drying: In the middle of May, when the green plum fruit is about eight ripe (the fruit color changes from green to green and yellow), it can be picked, the picked green plum is divided according to the large and small, evenly divided into the prepared roast, using charcoal as fuel, first baking at a temperature of about 60 ° C for 1 hour, and then baking at a low heat of about 50 ° C for 24 hours, and then taking out and carefully turning the degree to not break the peel. After one day, it is left in the kang and baked on a low heat of about 50 ° C for 24 hours until the flesh of the plum is wrinkled and brown. To make the finished ume black, you can stack the dried ume for 3-5 days, the color will gradually turn black, you can also add a small amount of oil pine wood to the charcoal fire, so that the black smoke produced by baking plays a blackening effect. It is worth noting that when roasting with a fire, it is not advisable to use coal as fuel, so as not to pollute the product with harmful gases produced during the coal combustion process.
2. New era innovative heat pump air energy plum drying: heat pump air energy plum dryer is a new type of automatic high efficiency dryer, using intelligent heat recycling reverse Carnot cycle principle, ome dryer easy to operate, temperature, humidity can be based on the local environment, ome dry water content can be controlled. The whole machine is environmentally friendly and energy-saving, energy saving is obvious, only need to add a small amount of electrical energy for the operation of the host, its high efficiency, low energy consumption, high efficiency, zero pollution, is a popular new drying method. Ome dryer adopts touch screen setting, adopts medium and low temperature drying method, the whole process is close to natural drying, the dried plum quality is unified, the color is natural, the product grade is high, the whole process is zero pollution, and it fully meets the requirements of environmental protection and hygiene.
10P prune dryer