Food Antioxidant Cellulose Acetate Nanofiber Preservative Film

Abstract

The invention relates to an oxidation-resistant cellulose acetate nano fibrous preservative film for food. A preparation method comprises the following steps of the selection of cellulose acetate and the confection of a solvent, the confection of a fiber forming matrix of the cellulose acetate, the confection of a cellulose acetate based tannic acid-iron ion complexing composite electrospining precursor solution and the preparation of electrostatic spinning, the electrostatic spinning and the obtaining of a fibrous film. According to the oxidation-resistant cellulose acetate nano fibrous preservative film, the hydrophobic cellulose acetate is used as the fiber forming matrix; by utilizing that the molecular structure of a natural component tannic acid has double unique performance of oxidation resistance and the complexing with an iron metallic ion at the same time, a CA / TA-FE+++ composite nano fibrous film is prepared by a one-step method; not only is a cellulose acetate ultrafine fibrous film endowed with a functional characteristic, but also the disadvantage of mechanics of machinery is overcome; a preparation process is innovatively simplified. According to the oxidation-resistant cellulose acetate nano fibrous preservative film, the polymer material science is combined with food science; a novel oxidation-resistant preservative film is developed to make up the blank of the preparation of a nano-sized oxidation-resistant fibrous film in China.

Description

technical field [0001] The invention belongs to the field of fresh-keeping materials, and relates to a novel anti-oxidation active nanofiber packaging material, which is widely used in fat-rich food preservation films such as oily food, fresh meat, and aquatic products, especially a food anti-oxidation cellulose acetate Nanofiber wrap. Background technique [0002] The emerging antioxidant active packaging system is mainly composed of three parts: antioxidants, packaging materials and food. By adding antioxidant components to the packaging material, coating and fixing the antioxidant on the surface of the packaging material and contacting the food medium to exert an antioxidant effect, avoiding the hidden dangers of food safety caused by direct addition of food additives. Since non-degradable materials such as polystyrene, polypropylene and other plastic products are difficult to degrade in the environment after being discarded, resulting in increasingly serious white pollu...

AI Technical Summary

Problems solved by technology

According to the solvent and polymer dissolution parameters, the solvents currently used to dissolve cellulose acetate in electrospinning are limited. The single solvents include acetone, chloroform, formic acid, and pyridine. At present, the commonly used methods in cellulose acetate electrospinning, such solvents are low-toxic or moderately toxic organic solvents, although the solvent will volatilize during the preparation, the problem of solvent residue cannot be ignored

[0006] 2. Poor mechanical properties of prepared fibers

[0007] 3. Fiber modification to improve mechanical properties is difficult to produce

The use of chemical cross-linking agents to chemically modify cellulose acetate is time-consuming and complicated, and it is urgent to develop a preparation process that is easy to operate and low in cost.

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