Externally-placed bagged food preservative

Abstract

The invention discloses an externally-placed bagged food preservative, and belongs to the technical field of food safety. The externally-placed bagged food preservative comprises a preservative bag, wherein sealing strips are fixedly connected to the inner walls of the front and rear sides of the preservative bag; an exhaust mechanism is arranged at the lower end of the preservative bag; an air inlet cylinder is fixedly connected to the upper end of the exhaust mechanism; an elastic valve piece is fixedly connected into the air inlet cylinder; and an exhaust main pipe is inserted into the upper end of the air inlet cylinder. Air pressure generated by movement of a piston can be utilized, and air in the bag can be rapidly exhausted through multiple evenly-arranged air inlet branch pipes, so that bacteria in the air in the bag are brought out, the content of the air in the bag is reduced, breeding of the bacteria is delayed, and the food quality guarantee period is prolonged; through sealing cooperation of the sealing strips, repeated utilization of a vacuum packaging bag is achieved, and a preservative is made full use of; and through the oxidation discoloration characteristic of multiple metal sodium thin pieces, people can be reminded whether the food in the bag is fresh or not in time.

Description

technical field [0001] The invention relates to the technical field of food safety, and more specifically relates to an external bagged food fresh-keeping agent. Background technique [0002] Antiseptic preservatives are chemicals that maintain the inherent color, aroma, taste, shape and nutritional content of food. It can be used in combination with other medicaments, and the two purposes of antiseptic and fresh-keeping can be achieved with one dose. Therefore, the combination of antiseptic and fresh-keeping is called anti-corrosion preservative or simply preservative. [0003] General food preservatives are card-shaped and placed in food bags to keep food fresh for a certain period of time. [0004] However, the existing food preservatives are generally placed inside the food bag. When people eat a part of the food and put it into the food bag, the preservative will directly contact the outside air, which not only increases the bacteria in the bag, but also affects the fo...

AI Technical Summary

Problems solved by technology

[0004] However, the existing food preservatives are generally placed inside the food bag. When people eat a part of the food and put it into the food bag, the preservative will directly contact the outside air, which not only increases the bacteria in the bag, but also affects the food quality. The fresh-keeping effect of preservatives is greatly reduced, making it difficult to make full use of food preservatives. At the same time, the existing preservatives have a single function and cannot remind the bacteria inside the bag

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