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1. Koji: 100 kg of wheat bran, 3 kg of broth (purchased in vinegar workshop), mixed with water, and the humidity is suitable for fingers when there is water without drip. Then put light boxes into the song room. Room temperature 30 °C, product temperature is maintained at 30 ~ 35 °C, once every two hours mixing, so that the material fully exposed to the air, the material issued vinegar aroma, yellow block after the shade dry standby.
2. Ingredients: Add the appropriate amount of bran in the fruit to absorb excess water, loosen the raw materials, speed up the vinegarization process, how much bran is added, and squeeze the water from the fingers without using the hand-mixed material. Dripping water is appropriate.
3. Stacking fermentation: The bran is added at 3% of the weight of the raw material and piled into round or rectangular piles of 1 to 1.5 meters in height. Covered with plastic film, the material is turned 1-2 times per day, and the stack temperature is controlled at 35. °C or so, not more than 40 °C, after 10 to 15 days, when the raw material issued balsamic vinegar and no raw taste, it is a blank.
4. Pour vinegar: Pour vinegar can be used when vinegar is poured. A hole with a diameter of 2 cm was drilled under the cylinder and a bamboo tube with a length of 10-20 cm was installed. The gauze was covered with a clean gauze. At the bottom of the tank, a bamboo sieve is vacant, sieved with 1 to 2 layers of clean sacks, and the vinegar blanks are poured under the hemp sheets. The proportion of 1 kg of vinegar blank plus 1 kg of water is poured into clean cold water and soaked for four hours. Remove the gauze plugged in the mouth and the vinegar flows from the mouth of the mouth. The first time vinegar spilled, it is finished. The second leaching of vinegar, pour the new vinegar blank for vinegar to use.
After the processing of the fruit, the peels, fruit crumbs, fruit and other wastes, and fruit drop, can be used to produce fruit vinegar by solid fermentation. The production process is as follows: