Sodium chloride? Instant salt? Fresh-keeping Pleurotus ostreatus, Pleurotus ostreatus, etc. are immersed in 0.6% saline for about 10 minutes after finishing. After being drained and put into a plastic bag, they can be stored for 5-8 days. . Rice soup film Fresh rice soup was added with 1% soda ash or 5% baking soda, stirred well and cooled to room temperature. The fresh mushrooms will be immersed in rice soup. After 5 minutes, remove them and place them in a cool and dry place. At this time, a layer of rice soup film will form on the surface of the mushroom, which can block the air and generally keep it fresh for 2-3 days. Ascorbic acid preservation Freshly harvested needle mushrooms, shiitake mushrooms, straw mushrooms, etc. are sprayed with 0.1% ascorbic acid solution, and then put into a non-ferrous container, which can be kept fresh for 3-5 days. The mixture of sodium chloride and calcium chloride is preserved in a mixture of 0.2% sodium chloride and 0.1% calcium chloride. The freshly harvested fresh mushrooms are immersed, and bamboo curtains are placed on them. The bamboo curtain is pressed with a weight. Immerse the cells under the liquid surface and take them out after 30 minutes. The treated mushrooms can be kept fresh for about 5 days at 15°C to 25°C and fresh for 10 days at 5°C to 10°C. Maifanshi preservation fresh straw mushroom into a plastic box, with Maifan stone water immersed in mushroom body, placed in a low temperature environment below 0 °C storage, preservation period of up to 70 days, the amino acid content and fresh mushrooms no difference , And the color and taste are good.