在超市买冷冻食品时，一定要注意。你能保存冷冻食品多久?根据包装上的说明，典型的饺子可以在零下18℃下保存3个月。这里有两个含义:只要工厂一直保持在- 18℃，三个月就不会出现明显的质量问题;如果产品在出厂后没有保持在- 18℃，3个月内不能保证质量下降。这是因为，在冷冻条件下，微生物基本上不繁殖，但味道、鲜味正在慢慢变化，脂肪会慢慢被氧化，维生素会慢慢被分解。因此，它在- 18℃下的保质期为3个月，这并不意味着它可以保存3个月。
When you buy frozen food in the supermarket, you must pay attention to it. How long can you keep frozen food? According to the instructions on the package, a typical dumpling can be kept at - 18 ℃ for 3 months. There are two meanings here: as long as the factory keeps at - 18 ℃ for three months, there will be no obvious quality problem; if the product does not keep at - 18 ℃ after leaving the factory, the quality can not be guaranteed to decline within three months. This is because, under freezing conditions, microorganisms do not breed basically, but the taste and freshness are changing slowly, fat will be oxidized slowly, and vitamins will be decomposed slowly. Therefore, its shelf life at - 18 ℃ is 3 months, which does not mean it can be kept for 3 months.
Most dumplings produced in large factories use the mechanical packaging system formed by dumplings. Dumpling making is a very important technical link in dumpling production, which is directly related to the shape, size, weight, skin thickness, skin filling proportion and other quality issues.
1. The dumpling machine should be cleaned and adjusted. The machine must be checked for proper operation before operation. The machine must be clean and free of oil, meat, flour, flour or other foreign matters. Adjust the ground to a uniform and uninterrupted stable air flow; in order to make the dumpling skin thick, heavy, large and small, and meet the product quality requirements. Generally speaking, the skin weight of dumplings is less than 55%, the filling weight is less than 45%, the shape is fuller, the size and thickness are moderate. In the process of making dumplings, noodles (cut into long strips) and fillings should be added in time to ensure that the shape of dumplings is complete and the size is the same. After packaging, the machine shall clean relevant parts as required. After cleaning all parts, assemble the machine for standby.
2. The dumplings in the package are strictly required, the shape is neat, the filling can not have, lack of angle, depression, rotten head, deformation, wrinkling, small flat, lace, connected together can not be a single, the size of the two ends of the dumplings has abnormal phenomenon.
3. In the process of dumpling making, under the premise of ensuring that the dumpling does not adhere to the mold, we should adjust the size of the dry powder leakage adjustment plate to reduce the vibration of the falling dry powder and the dry powder machine and the vibrating screen, so as to reduce the dry flour attached to as many dumplings as possible, such as the color and appearance of fresh frozen dumpling products, shiny and beautiful.
The above is a detailed introduction of how to select quick frozen dumplings for Jinan quick frozen dumpling wholesale. For more information, please click