A kind of preparation method of safe granular food desiccant

Abstract

The invention discloses a preparation method of a safe granular food drying agent, and belongs to the technical field of packing material preparation. The preparation method comprises the steps that pulp liquid is prepared by taking fresh edulis canna tuberous rhizomes as a raw material and then filtered, the obtained filtrate is washed and subjected to suction filtration to obtain crude starch, filter residues are washed and dried to obtain edulis canna crude fibers, edulis canna starch is prepared by taking the crude starch as a raw material, enzymolysis treatment is conducted on the edulis canna starch with alpha-amylase to obtain edulis canna starch enzymolysis emulsion, the edulis canna crude fibers are crushed and screened and then stirred and mixed with micro-bead silica gel in the edulis canna starch enzymolysis emulsion, the surface of the micro-bead silica gel is coated with a layer of starch fiber film, and then the safe granular food drying agent is obtained. The preparation method is simple, and the moisture adsorption rate of the prepared food drying agent is greatly increased; in addition, the natural plant fibers are taken as a moisture adsorption carrier, and therefore the food drying agent can be fully and naturally degraded, belongs to an environment-friendly drying agent and achieves the high actual application value and a wide market prospect.

Description

Technical field [0001] The invention discloses a preparation method of a safe granular food desiccant, which belongs to the technical field of packaging material preparation. Background technique [0002] Desiccant is also called absorbent. It is used to prevent moisture and mildew, and has a drying effect. According to the adsorption method and reaction product, it is divided into physical adsorption desiccant and chemical adsorption desiccant. Physically adsorbed desiccants include silica gel, alumina gel, molecular sieves, activated carbon, bone charcoal, charcoal, mineral desiccants, or activated clay, etc. Its drying principle is to physically adsorb water molecules in its own structure. [0003] Food desiccant is an article used in food packaging. Food desiccant is generally non-toxic, tasteless, non-contact corrosive, and non-environmental pollution. Food desiccants are used to reduce the humidity in food bags and prevent food from spoiling; while laboratory desiccants such...

AI Technical Summary

Problems solved by technology

[0005] The main technical problem to be solved by the present invention is to provide a safe granular food desiccant in view of the current desiccant's low moisture absorption rate, limited adsorption capacity, unfriendly environment, and harm to the human body after ingestion. The preparation method, the method uses fresh plantain taro massive rhizomes as raw materials to make a slurry, then filters the slurry, washes and suctions the obtained filtrate to obtain coarse starch, then washes and dries the filter residue to obtain plantain crude fiber, and then uses the above-mentioned crude starch Prepare canna starch as a raw material, enzymolyze it with α-amylase to obtain canna starch enzymatic emulsion, finally crush and sieve the above canna crude fiber and mix it with microsphere silica gel in the enzymatic emulsion of canna starch Stir and mix, and coat a layer of starch fiber film on the surface of the microsphere silica gel to obtain a safe granular food desiccant. The preparation method of the present invention is simple, and the prepared food desiccant has good hygroscopicity, high moisture absorption rate, and better hygroscopicity. Great improvement, and the present invention uses natural plant fiber as the hygroscopic carrier, which can be completely degraded naturally, is an environmentally friendly desiccant, has high practical application value and broad market prospects