Preparation method of edible packaging film based on diatom polysaccharide

Abstract

The invention discloses a preparation method of an edible packaging film based on diatom polysaccharide. The preparation method specifically comprises the following steps: degreasing diatom powder, concretely adding a chloroform methanol mixed solution into the diatom powder, carrying out degreasing, suction filtration, and drying to obtain degreased diatom powder; preparing the diatom polysaccharide, concretely uniformly mixing the degreased diatom powder with water, then adding 8-chlorotheophylline, and carrying out ultrahigh-pressure extraction and suction filtration, wherein the obtained filtrate is the water extracted crude polysaccharide; and preparing the edible packaging film, concretely taking the following components in parts by weight: the diatom polysaccharide, glycerol, gelatin, tea polyphenol and water, dissolving the components to prepare a film liquid, carrying out degassing, then uniformly pouring the degassed film liquid into a mold, and carrying out drying for forming a film, so as to obtain the edible packaging film. The preparation method disclosed by the invention has the beneficial effects that the preparation method is simple and feasible, the time consumption is low, the energy consumption is low, the utilization rate of the raw materials can be improved, and the degradable pollution-free packaging film with good performance can be formed. The surface of the packaging film is smooth and compact, the film is easy to uncover, and the packaging film is edible, is easy for industrial scale production and has good application value and market potential.

Description

technical field [0001] The invention relates to the field of natural active ingredients, in particular to a preparation method of an edible packaging film based on diatom polysaccharide. Background technique [0002] Diatoms are a type of single-celled plants with pigment bodies, often connected by several or many individual cells into various groups. Diatoms are one of the important producers and suppliers of primary substances in the ocean. missing part. Diatoms are the main components of marine organisms and play an extremely important role in the material and energy cycles of marine ecosystems. Studies have shown that diatom exopolysaccharide has various biological and pharmacological activities. It has great activity in activating the immune system function, anti-tumor, anti-virus, etc., and has low toxic and side effects. The pharmacological activity of the product modified by sulfation is more obvious. Hot topics in current medical research. Diatoms have the charac...

AI Technical Summary

Problems solved by technology

[0003] At present, my country's packaging industry is developing rapidly and has become the second largest packaging country in the world after the United States. The extensive use of plastic packaging materials has increased the burden on the environment. Ordinary landfills, incineration and other treatments will still cause serious pollution to the environment. Effectively solve the problem of "white pollution"; at the same time, synthetic plastics are prepared on the basis of the petroleum industry, which aggravates the energy crisis to a certain extent and does not meet the requirements of low-carbon economic development

The development and use of degradable plastics provide a feasible and effective way to replace plastics. However, the common degradable plastics on the market are filled with a small amount of starch, etc. Polymers still cannot be completely degraded, which will cause secondary pollution to the main soil and water resources