Bacteriostatic edible disposable packaging film and preparation method thereof

Abstract

The invention discloses a bacteriostatic edible disposable packaging film and a preparation method thereof. The packaging film is prepared by the following steps of: mixing the solution obtained by dissolving 5 to 10 parts by weight of chitosan in the aqueous solution of an acetic acid, and the aqueous solution obtained by dissolving the mixture of 1 to 3 parts by weight of hydroxyethyl cellulose or hydroxyethyl cellulose and gelatin in water, with starch paste obtained by mixing 72 to 76 parts by weight of edible starch, 12 to 15 parts by weight of glycerol with water to obtain mixed solution, and performing air drying and film formation to obtain the product, wherein the concentration of the aqueous solution of the acetic acid is 4 to 6 mass percent, and the aqueous solution of the acetic acid is 240 to 260 parts by weight; and in the mixture of the hydroxyethyl cellulose and the gelatin, the weight ratio of the hydroxyethyl cellulose to the gelatin is 2-3:1. The edible starch is preferably core starch or potato starch, more preferably corn starch. The packing film has the advantage of meeting the basic performance required by the packing films along with capability of inhibiting the growth of bacteria, edibility, no need of discarding, no influence on the flavor and mouthfeel of foods and low cost.

Description

technical field [0001] The invention relates to a bacteriostatic edible disposable packaging film and a preparation method thereof. Edible starch is used as the main raw material, chitosan, hydroxyethyl cellulose, glycerin and other functional additives are added, and a compound method is adopted to obtain a kind of food with suitable strength, which dissolves quickly in hot water and does not contain artificial preservatives. However, it has good antibacterial properties, low hygroscopicity, and edible film-forming material; it can be used for one-time packaging of powdered food, such as seasoning powder; it can mechanically isolate air, water vapor and bacterial contamination during the packaging process, and inhibit microbial growth It can also enter the cooking process along with the powdered food, dissolve quickly in boiling water or brewing, and can be eaten without affecting the appearance, taste, smell and taste of food. It can be used for one-time packaging or sub-pa...

AI Technical Summary

Problems solved by technology

These products are difficult to popularize and apply due to the high raw material cost and high price, or there is still a gap between the ideal indicators of the current polyolefin packaging materials or edible films in terms of strength, hot water solubility, taste, and antibacterial properties, and the comprehensive performance has not yet been achieved. It has completely reached the practical stage, or the production and processing techniques are complicated, it is not easy to be compatible with the existing process equipment of this kind of packaging materials, and it is difficult to industrialize

Therefore, although prototype products of this kind of edible packaging materials have come out, they are far from being able to replace the status of synthetic polymers in food packaging materials, and few of them have been accepted and applied by the market, especially in China. See such products being industrialized and promoted