1, the process of raw materials, processing and acceptance, pre cooking, selection, classification, sorting, dressing cans, plus soup, exhaust, sealing and sterilization, cooling, finished 2, operation points of raw material selection: canned mushrooms mushroom should choose the path between 20-40mm and fresh mushroom umbrella. Mushrooms in the mining, transportation and processing of the entire process, must minimize exposure time, processing flow as soon as possible. Prevent mushrooms from contact with iron, copper and other metals so as to avoid soaking in color protecting liquid or water for a long time. 2. Treatment of color protection: after the mushroom collection, remove the root handle with mud, immediately dipped in water or 0.6% salt water. In the process of picking and transporting, we must strictly guard against mechanical injury. If it cannot be quickly transported back to the factory in 3h, it must be soaked in 0.6% salt water or washed with 0.03% sodium bisulfite solution, and then transported in soaking to prevent mushrooms from reaching the liquid level. If the mushroom is soaked in 0.1% of the sodium pyrosulfite liquid 5-10min in the producing area, fish in the packing bag and packing back plant, then the water can be drifting after 30min to be put into production. (3) precooking: after washing the mushroom, put it in a sandwich pan and boil 6-10min with 0.1% citric acid liquid to boil, and the ratio of the liquid to the mushroom is 1.5:1. Remove the mushrooms immediately after precooking and quickly cool through. The selection, dressing and grading: two pieces and the whole class. The mud root, the shank shank is too long or the hair, the disease and insect pests, the spotted mushroom and so on should be trimmed. All open umbrellas (not black in color) take off the handle, cover, cover incomplete and have a small amount of spots or used for shred mushrooms. The production of mushroom is suitable for the large number of mushroom with diameter 19-45mm. It thinks that 18-20mm, 20-22mm, 22-24mm, 24-27mm, 27mm and 18mm are six levels below. It is necessary to clean the mushrooms in front of the tank. The whole assembly: sorting: Mushroom color yellow, with elastic cap, morphology, trimming good mushroom. In the same tank, the color, size, and the stalk of the mushroom are roughly uniform. Mushroom pieces: the same tank in a uniform thickness, the thickness is about 3.5-5.0mm. Fragments: irregular pieces. The soup with salt: the concentration of 2.3%-2.5, citric acid and adding 0.05% in boiling brine, filtering. The temperature of the salt solution is not less than 90. The concentration of 15173# saline is 3.5%-3.7%, and the concentration of citric acid is 0.13%-0.15%. The cans: empty tank cleaning after 90 DEG C hot water disinfection, water drain. Mushroom loading: 761# tank 120-130g, 7114# pot 235-250g, 15173# jar 1850-1930g (mushroom), 2050-2150g (broken mushroom), fill up mushroom and fill with soup. The seal: seal the center temperature inside the tank is more than 80 DEG C to 0.03-0.04mpa vacuum degree of vacuum sealing. To sterilization, cooling: canned mushrooms should be used in high temperature sterilization. After opening the tank, the color of the soup is shallow, the color of the mushroom is more stable, the tissue is good, and the air tank has a light corrosion. The sterilization formula of 761# and 7114# cans is 10 '-20' -10 '/121 centigrade; the sterilization formula of 15173# tank is 15' -40 '-15' /121 temperature; after sterilization, the temperature is cooled down to 38 degrees. 3, the quality standard of the whole mushroom is only pale yellow, pale yellow mushroom pieces and fragments or grayish yellow, clear soup. There are fresh mushrooms taste and smell, no smell, morphology were: the only mushroom slightly flexible, substantially uniform size, pileus morphological integrity, allowing a small amount of mushrooms have small cracks, small dressing and thin mushroom, no serious deformity, with a length of roughly uniform tank stipe; mushroom flake, slitting, thickness about 3.5-5mm, even the same tank thickness, allowing a small amount of irregular cassette fragments; pieces mushroom, irregular fragments or blocks. The net content and solid content are: 761# cans 198g, no less than 60%, 7114# tank 415G, no less than 55%; 15173# cans 2850%, the whole mushroom is not less than 60%, and the broken mushrooms are no less than 70%. The content of sodium chloride is 0.5%-1.5%.

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