In actual production, most baked goods (bread, cakes, pastries, etc.) have a small number or even a large number of mold deterioration caused by surface contamination. In order to solve this situation, many bakery manufacturers will place an externally controlled fresh-keeping card in the packaging bag of the food.
What is an externally controlled food preservative?
Externally controlled food preservatives refer to iron powder, silica, etc. as the contents of the composite packaging pouch, or polymer materials to absorb edible alcohol made of liners, etc., put into the closed packaging, not added to the raw materials of food production, only by adjusting the humidity inside the packaging, slowly releasing antibacterial gas (ethanol gas) or directly spraying antibacterial substances (blended with alcohol) on the surface of the food, to achieve the effect of antibacterial preservation.
At present, there are many types of externally controlled food fresh-keeping cards on the market, how to choose? What principles need to be followed?
1.Technology maturity principles.
Externally controlled preservation technology involves knowledge in many fields, such as biotechnology, physical technology and chemical technology. It is crucial to choose a product that is technologically mature, stable and reliable. Such products have been tested in the market for a long time to ensure that the food will not be unnecessarily damaged during the preservation process.
2.Security principles.
When choosing externally controlled preservation products, it is necessary to ensure that the preservatives and packaging materials used in the products meet food safety standards and will not cause harm to human health. In addition, the production process of the product should also comply with the relevant hygiene requirements.
3.The principle of environmental protection.
With the continuous improvement of people's awareness of environmental protection, it has become a trend to choose environmentally friendly external control preservation products. This type of product is not only environmentally friendly during use, but also can be effectively disposed of after disposal to reduce the impact on the environment.
4.Principle of economy.
Enterprises also need to consider their cost-effectiveness when choosing externally controlled preservation products. While a high-quality freshness product may result in a higher initial investment, it is worth it if it ensures the quality of the food and extends the shelf life of the food in the long term.
The externally controlled fresh-keeping package is a kind of edible alcohol compounded and attached to a food-grade cotton pad with high adsorption, and packaged with a food-grade coating. When used, the liquor ** body loaded on the cotton pad is slowly released, forming a certain concentration of vapor phase protective layer around the fresh-keeping product and is not affected by the pH of the protected food. This fresh-keeping bag has the dual effect of contact sterilization and fumigation sterilization, which can inhibit the growth of a variety of molds, bacteria and spoilage bacteria, so as to achieve the purpose of preservation.