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Plastic film vacuum packaging storage
Weighing the amount of freshness preservative, with a fixed amount of water dissolved in the solution of the lotus root will be washed into this solution impregnated for 60 min. Remove the water, remove water, into the film thickness of 0.08 mm polyethylene bags, the use of vacuum packaging machine packaging, each bag of lotus root 1-5 kg, and put into the room temperature of 1-5 kg of lotus root. After 2 months, the color of the stored lotus root was close to that of fresh lotus root. During the storage period, as long as the bag does not loosen and leak, there is no need to move and change the bag. This method is suitable for supermarkets and foreign exports. If combined with low-temperature storage, it can keep freshness for 4 to 5 months.
Constant temperature water storage
The harvested lotus root with mud back into the water temperature of 5 ~ 8 ℃ in the pool, can keep fresh for 1 month.
Plastic film bag storage method
Lotus root will be washed, soaked with Tekdol preservative (500 mg/kg) 1 min after treatment, remove, dry, loaded into 110 cm × 30 cm, film thickness of 0.03 mm polyethylene plastic bags, tightly tied bags.
Water storage preservation method
The lotus root is washed, put into the container, filled with water, every 1 ~ 2 d to cool water 1 time. Keep the water from freezing in winter. This method can keep fresh for 1~2 months.
Burying method
Brick or crate, wooden boards and other sealed and buried pits, according to a layer of lotus root a layer of soil placed, stacked five or six layers covered with 10 cm thick fine mud. Fine mud should be fine and soft with moisture, hand pinch not into a ball and remove debris and other debris. When burying, the lotus roots should be placed in a row in order to avoid breaking. When burying in the room with cement floor, the bottom of the pit should be 10 cm high with wooden boards or bamboo frames, and the bottom surface should be paved with 10 cm thick fine soil, and then stacked and covered with soil according to the above method. The storage room should be sterilized every 15 days. When using outdoor open ground burial, choose a high terrain and sheltered from the light, the mud, lotus root layers piled up into a slope or pagoda shape, covered with mud, dug a good drainage ditch around to prevent water, in case of rainy days in a timely manner to cover. During the storage period every 20 ~ 30 d turn over 1 time.
Mud coating lotus root storage
Select the yellow soil, break and remove gravel and other debris, add water to make a paste, the whole root into the mud impregnated. When the lotus root is evenly coated with mud, take it out, put it into a box or a straw bale, and tie it up. If the mud is dry and fall off, according to the above method again impregnated 1 time, this method is suitable for short-term storage and transportation sales.
Fine sand storage method
Select the terrain high, windy, sheltered from the rain, with fine sand lining the bottom, humidity to the hand pinch into a ball loosened that is appropriate, and dug a good drainage ditch around the yard put a layer of lotus root on a layer of fine sand. So sand, lotus root between each other, stacked 5 to 6 layers, the top cover about 10 cm thick wet sand can be. This method can generally keep fresh for about 60 days. In addition, can also be indoors with bricks or wooden boards surrounded by a buried pit, the pit paved with 5 cm thick wet sand, will be dug out of the lotus root with mud in order to discharge, and then layers of lotus root layer yarn, yards 5 to 6 layers high, the top cover of about 5 cm thick wet sand can be.
Salt water storage method
Pre-treated lotus root in non-ferrous containers in order, submerged in the concentration of 10 % to 15 % of salt water, can be kept fresh for more than 5 months. Because of the salt is difficult to penetrate into the flesh of the lotus root tissue, both preservative and enzyme inhibition, after storage and fresh flavor is no different. This method is simple and easy to implement, the effect is good, can be stored for more than half a year, the brine can be reused.
Bag water storage method
Lotus root dug out slightly washed, packed into a bag, every 70 kg packages, placed in the water depth of 1 m, the lower temperature of the water, so that the bag does not stick to the soil, on the surface of the water is not exposed, the top layer of watercress covered with a layer of 6 to 10 mm thick.