Safe food desiccant composition

Abstract

The invention provides a safe food desiccant composition belonging to the technical field of food desiccants. The safe food desiccant composition comprises polyacrylamide starch, corncob meal or soybean seed coats, wherein the weight ratio of the polyacrylamide starch to the corncob meal or the soybean seed coats is (1:1)-(1:9); and the polyacrylamide starch is prepared by carrying out graft copolymerization on starch and acrylamide under conditions of catalysis of ammonium persulfate and crosslinking of N,N'-methylene-bis-acrylamide. The safe food desiccant composition provided by the invention is a safe food desiccant with high moisture absorption quantity higher than the moisture absorption quantities of quick lime and silica gel; and the safe food desiccant composition causes no damage to a human body while in contact with the human body. Because the components of the safe food desiccant composition are biodegradable, the safe food desiccant composition is beneficial for environmental protection. The raw materials of the safe food desiccant composition are from side products obtained through agricultural product processing and have a wide source range, and the safe food desiccant composition has the advantages of low cost and scientific manufacturing process and can be industrially produced on a large scale.

Description

technical field [0001] The invention belongs to the technical field of desiccant for food, and in particular relates to a safe desiccant composition and a preparation method thereof. Background technique [0002] A large amount of desiccants are used in food processing, such as snow cakes and seaweed products. Their main function is to prevent the food from degrading the taste or causing microbial hazards due to moisture absorption during the shelf life. A common method is to seal the desiccant in a water vapor or water permeable fiber product or packaging film, and pack it together with moisture-absorbing food in a food bag to absorb the moisture that enters through the food packaging bag. Keep food dry. [0003] In the prior art, quicklime and silica gel are commonly used desiccants in food processing. [0004] The characteristics of quicklime are: cheap price, wide source of materials, strong hygroscopicity, under low humidity conditions (15~25%RH), there is still 20~30...

AI Technical Summary

Problems solved by technology

During the firing process, a large amount of waste gas is produced, consumes a large amount of electric energy, and causes environmental pollution. Moreover, due to the exothermic reaction between quicklime and water when it absorbs moisture, once quicklime comes into contact with the esophagus or eyes of the human body, it will contact the esophagus. Or the moisture in the eyes reacts, and the heat generated will burn the human body. Therefore, food companies that use quicklime as a desiccant often receive complaints from consumers because children often mistake the bag of the desiccant for the edible part. After being torn apart with the teeth, resulting in a splash of quicklime, which caused burns to its esophagus or eyes

For this reason, the solution that food companies often adopt is to increase the strength of the packaging material wrapped with quicklime so that it is not easy to be torn apart, which will greatly increase the packaging cost.

[0005] The characteristics of silica gel are: under high humidity conditions, its moisture absorption capacity is 30% of its total amount, but the moisture absorption capacity at low humidity conditions is not strong, and because its moisture absorption is physical moisture absorption, there will be desorption after moisture absorption Phenomenon, and because of its limited source and complex processing technology, its cost is much higher than that of quicklime, so its use and promotion are greatly restricted