Sealed with a fresh-keeping bag and placed in a refrigerator freezer, it can be stored for more than one year. The taste and aroma of the food will not change. It is better not to exceed one year. Nutrition and taste will change for a long time. However, the best preservation period for bamboo shoots is one month, and one year is a bit too long. The following is a common practice for fresh-keeping in January: 1. Harvesting of bamboo shoots: mainly bamboo shoots harvested in winter and bamboo shoots harvested before and after Ching Ming Festival. Bamboo shoots are harvested for a suitable period when the bamboo shoots have just emerged from the soil. They are harvested too late and have a lot of fiber and bitterness. When harvesting, open the soil around the bamboo shoots, expose the bamboo whip, cut the base of the bamboo shoot with a knife, remove the bamboo shoots, and then fill the pit with a cover and cover the earth, which will not affect the continued growth of the mother bamboo. 2. Winter bamboo shoot storage: The bamboo shoots should be stored at a temperature of 0 to 1°C and a relative humidity of 90% to 95%. 1 Burial: Strictly select and remove damaged, dried and soft-frozen bamboo shoots. Short-term storage can be piled up in the shade and wet sand in the outdoor place. The stack height is about 1m, covered with 10cm of sand and covered with straw. Prevent sun and rain. When burying bamboo shoots in winter, the bamboo shoots should be placed in the wet sand pile and stored for more than one month. If it takes a long time to store, dig pits outdoors, then stack the selected bamboo shoots and sand in the pits, cover with a thick layer of soil, and then cover with straw. Do not cover with plastic film and splash water to prevent deterioration. 2 Saline leaching: Place the entire bamboo shoots in the pickle jar (or pool) and dip it with concentrated salt water, and store for about 2 months. The quality of bamboo shoots and the color of bamboo shoots do not change. When consumed, it must be soaked in water to desalt. 3 Preservation agent storage and storage: Prepare preservatives with 25% sodium sulfite, 30% sodium bicarbonate, 10% calcium oxide, and 40% garlic extract first. Then select bamboo shoots with relatively smooth incision and soaked with preservatives. , And then use liquid paraffin smear incision, into a plastic mesh bag, placed in the indoor swing, can prevent mildew and reduce water loss. In 1 ~ 5 °C conditions, can be stored for more than 1 month. 3. Spring bamboo shoots storage: Spring bamboo shoots are harvested at a time when the high temperature is coming. The bamboo shoots are in a period of vigorous growth and growth. It is necessary to control the decay through cold storage. The specific approach is to select the new harvest spring bamboo shoots, first into the cold shelves or pre-cooling baskets stacked, and then into a 0.02 ~ 0.03mm thick polyethylene plastic bag, sealed and placed in the cold shelves , Control the cold storage constant at 0 ~ 1 °C, and maintain a relative humidity of 90% ~ 95%, can be preserved for more than 1 month.
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