Technology for producing degradable and edible film by utilizing corn composite modified starch

A technology of compounding modified starch and corn, applied in biological packaging, flexible covering, climate change adaptation and other directions, can solve the problems of limiting the application range of degradable edible film, low performance, imperfect production process, etc., to achieve improvement Effects of mechanical properties, prevention of membrane cracking, and ability to maintain strength

Active Publication Date: 2012-01-11
活泼
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are few studies on the properties of the film itself, such as tensile strength, moisture permeability, air permeability, water solubility, processing methods, and improving the performance of materials. Compared with other modern packaging technologies, there are still imperfections, such as low performance. , the production process is not perfect, which limits the application range of degradable edible film

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0006] A production technology of corn compound modified starch degradable edible film,

[0007] 1. Component deployment: 100kg of corn hydroxypropyl phosphate monoester compound modified starch, add 1000L of distilled water, 0.15L of glycerin, 1.25kg of sorbitol, 0.5kg of sodium alginate and 0.4kg of carrageenan under stirring, and heat at 50°C after homogenization Heating and stirring in a water bath until complete gelatinization to obtain a starch gelatinization solution.

[0008] 2. Degassing: degassing (0.5h-2h) under 0.1MPa vacuum, then let stand for 1h.

[0009] 3. Casting: Set the width and height of the scraper according to the film thickness requirements, and cast on the copper plate conveyor belt that can control the film thickness.

[0010] 4. Drying: The copper plate film-forming conveyor belt first passes through the steam drying pipeline equipment, and then passes through the cooling pipeline equipment with a relative humidity of about 50% to form a film.

[0...

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PUM

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Abstract

The invention provides technology for producing a degradable and edible film by utilizing corn composite modified starch, belonging to the technical field of food processing. The technology comprises the following main production processes: firstly gelatinizing the corn hydroxypropyl-phosphate monoester composite modified starch; then adding glycerin, sorbitol, sodium alginate, carrageenan and other components which improve the film performance; carrying out tape casting on the film solution on a copper plate after homogenization and degasification; adopting a copper plate film forming conveyer belt to firstly pass through steam drying pipeline equipment and then pass through cooling pipeline equipment with relative humidity being about 50% to form a film; and finally adopting mechanical film rolling equipment to roll the film, thus producing a degradable and edible film with high strength. The film material has good mechanical performance and oil, moisture and oxygen resistance. The film can be applied to packaging of various materials such as food, health products, drugs, feed and the like.

Description

technical field [0001] The invention discloses a production technology of a corn compound modified starch degradable edible film, which belongs to the technical field of food processing. Background technique [0002] Degradable edible film is a new type of packaging material that can be coated to keep fresh and can be processed into bags, boxes and other packaging forms to replace traditional synthetic packaging materials such as plastics. At the same time, it can also be a component of food and add to food. Color, fragrance and nutritional value. The degradable edible film has the advantages of no pollution and degradability, which is incomparable to plastic packaging. This is becoming more and more serious in the "white pollution". Today, most developed countries have banned or restricted the use of plastic packaging and advocated the use of "green packaging". Undoubtedly the best choice. Therefore, the preparation technology of degradable edible film packaging materials...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18C08L3/06C08L3/08C08L5/04C08L5/00C08K5/053B65D65/46
CPCY02A40/90Y02W90/10
Inventor 活泼
Owner 活泼
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