Chemical Preservation of Edible Fungi

The freshly collected Pleurotus ostreatus and Pleurotus ostreatus were soaked in 0.6% salt water for about 10 minutes, drained and stored in plastic bags for 5 to 8 days.

The fresh-keeping of sodium pyrosulfite puts the newly harvested flat mushroom on the clean cement floor, sprays 0.15% sodium pyrosulfite aqueous solution to the mushroom body, and turns the mushroom body while spraying so that it can be sprayed evenly. After spraying, put it in a plastic bag, seal it immediately and store it in a cool place. It can be kept fresh for 8 days at 10 ℃ ~ 25 ℃. Rinse with clean water when eating.

Rice soup film fresh-keeping used in rice soup, add 1% soda or 5% baking soda, cool to room temperature. Soak the fresh mushrooms in the lye of rice soup, remove them after 5 minutes and place them in a cool and dry place. At this time, a layer of rice soup film is formed on the surface of mushrooms, which can be isolated from the air and kept fresh for 3 days.

After ascorbic acid preservation of Flammulina velutipes, Lentinus edodes, straw mushrooms, etc., 0.1% ascorbic acid solution was sprayed on fresh mushrooms and put into non-iron containers, which could be kept fresh for 3 to 5 days, and its freshness and color remained basically unchanged.

The mixed solution of sodium chloride and calcium chloride was prepared with 0.2% sodium chloride and 0.1% calcium chloride to keep fresh. Soak the freshly harvested fresh mushrooms in the mixture, cover with a bamboo stick and add a heavy substance to soak the mushroom body below the liquid level for 30 minutes. The fresh mushrooms can be kept fresh for about 5 days at 15 ℃ ~ 25 ℃ and more than 10 days at 5 ℃ ~ 10 ℃.

Ascorbic acid and citric acid mixed fresh-keeping solution 0.05% ascorbic acid and 0.02% citric acid were mixed into a mixed fresh-keeping solution. Soak the fresh mushrooms in the fresh-keeping solution for 10 minutes, remove and drain, and seal them in plastic bags.

Keeping fresh for a long time is a kind of plant growth retarder. Soak the fresh mushrooms in 0.1% Bijiu aqueous solution for 10 minutes, drain, bag and seal, keep fresh at 5 ℃ ~ 25 ℃, and keep fresh for more than 15 days. Suitable for mushroom, mushroom, Pleurotus ostreatus, Flammulina velutipes and other fungi fresh-keeping.

The fresh straw mushroom was packed in a plastic box and immersed in wheat rice stone water and kept fresh at low temperature below 0 ℃ for a shelf life of up to 70 days. And the content of amino acid is not different from that of fresh mushroom, and the color and taste are better.