Edible packaging membrane with good barrier function and preparation method of edible packaging membrane

Abstract

The invention discloses an edible packaging membrane with a good barrier function. The edible packaging membrane comprises the following raw materials: modified crosslinked starch, gelatin, powdered cellulose, pentaerythritol phthalate, a barrier enhancing agent and isoamyl acetate. The edible packaging membrane with the good barrier function, which is disclosed by the invention, is prepared fromthe crosslinked starch which has network compactness, but the crosslinked starch is not very good in compactness and is insufficient in mechanical property, so that watermelon peel is subjected to a series of treatment to prepare nano cellulose which is safe and harmless, meanwhile, the nano cellulose has properties of high elastic moduli, high strength, and the like, can form a cross network structure together with the crosslinked starch, very good network compactness can be achieved, carrageenan has very high tension strength, and the three components are adopted as main base materials of the modified crosslinked starch and take synergetic effects into play.

Description

Technical field [0001] The invention relates to the technical field of edible packaging films, in particular to an edible packaging film with high barrier function and a preparation method thereof. Background technique [0002] Edible packaging materials can be traced back hundreds of years. As far back as the Han Dynasty in China, when Zheng He sailed to the West, he already used beeswax to encapsulate fruits, so that the fruits could be stored and kept fresh for a long time under the influence of different environments and climates. , And in modern times, glutinous rice flour is made into a film for anti-sticking inner packaging of candy; edible packaging, that is, packaging that can be used, generally composed of starch, protein, polysaccharide, fat, and composite substances, and is widely used in preservation Film, packaging film, high point packaging, food packaging, pastry packaging, seasoning packaging, etc. With the development of modern food industry, food packaging is c...

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Problems solved by technology

[0003] In the prior art, edible packaging films use natural edible substances as raw materials. Although they can degrade and increase food flavor and nutrients, they have high water vapor and oxygen permeability, and food is prone to deliquescence and corruption. Chinese patent documents ( Publication number: CN101899173A) discloses an edible starch-based food packaging film and its preparation method, which uses stabilized cross-linked composite modified starch as the main film-forming raw material, and adds food-grade plasticizers, lubricants, reinforcing agents and Stabilizer and other auxiliary materials are mixed by high-speed stirring, twin-screw extrusion granulation, and single-screw extrusion blown film. Although the stabilized cross-linked starch in the raw material of this invention has a spatial network structure after modification, it is filled with various auxiliary materials. , the network density is not very strong, the water vapor and oxygen permeability still need to be further improved, and the mechanical properties are still not good.

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