Active packaging film based on essential oil/beta-cyclodextrin inclusion compound and preparation method for active packaging film

A technology of cyclodextrin inclusion compound and packaging film, which is applied in the field of packaging materials to achieve high-efficiency bacteriostatic activity, inhibited growth, and good transparency.

Inactive Publication Date: 2012-07-18
邓靖 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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  • Active packaging film based on essential oil/beta-cyclodextrin inclusion compound and preparation method for active packaging film
  • Active packaging film based on essential oil/beta-cyclodextrin inclusion compound and preparation method for active packaging film

Examples

Experimental program
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Example Embodiment

[0027] Example 1

[0028] Take 40 g of polyvinyl alcohol, 1 g of sodium lauryl sulfate and 8 ml of ethylene glycol in a 500 ml beaker, and add 250 ml of water. Place the beaker in a constant temperature water bath and heat to 60° C. under low-speed stirring to obtain dispersion A. Weigh 5g of essential oil / β-cyclodextrin inclusion compound into a 250ml beaker, add 50ml water, and place the beaker in an ultrasonic oscillator for 15 minutes until the essential oil / β-cyclodextrin inclusion compound is more evenly dispersed in water. Get dispersion B. The dispersion liquid B is slowly added to the dispersion liquid A to form the dispersion liquid C. The dispersion liquid C is continuously heated to 95°C-100°C under low-speed stirring until the polyvinyl alcohol is completely melted. Take it out and cool to about 60°C and vacuum defoam to obtain a film-forming liquid. Put the film-forming liquid in a 50℃ water bath for heat preservation. Pour the film-forming liquid into the hopp...

Example Embodiment

[0029] Example 2

[0030] Take 40g of polyvinyl alcohol, 1g of sodium lauryl sulfate and 5ml of ethylene glycol in a 500ml beaker, and add 250ml of water. Place the beaker in a constant temperature water bath and heat to 60° C. under low-speed stirring to obtain dispersion D. Weigh 8g of essential oil / β-cyclodextrin inclusion compound into a 250ml beaker, add 50ml of water, and place the beaker in an ultrasonic oscillator for 15 minutes until the essential oil / β-cyclodextrin inclusion compound is more evenly dispersed in water. Get dispersion E. The dispersion liquid E is slowly added to the dispersion liquid D to be the dispersion liquid F. The dispersion liquid F is continuously heated to 95°C-100°C under low-speed stirring until the polyvinyl alcohol is completely melted. Take it out and cool to about 60°C and vacuum defoam to obtain a film-forming liquid. Put the film-forming liquid in a 50℃ water bath for heat preservation. Pour the film-forming liquid into the hopper o...

Example Embodiment

[0031] Example 3

[0032] Test results of active packaging film used for the preservation of sugar orange.

[0033] In this embodiment, sugar tangerine is used as a perishable food. Purchase seasonal sugar tangerines from the supermarket, and select the same size, no damage, no disease, ripe, fresh sugar tangerines. Wash the sugar tangerine with clean water first, then rinse with sterile water, and drain. The films prepared in Example 1 and Example 2 were cut into 15×15 cm squares and heat sealed into bags with a heat sealer. The fruits were randomly divided into multiple groups, and each group of 9 fruits was put into a film bag, and each treatment was repeated 3 times. The non-antibacterial PVA packaging film was used as a control to observe the effect of the active packaging film on the preservation of sugar tangerines. Thirty days after the start of the experiment, it was observed that the sugar tangerine in the packaging film prepared in the scheme of Example 2 did not rot...

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Abstract

The invention relates to a novel active packaging film. The active packaging film is characterized in that a film-forming base material is polyvinyl alcohol; a film-forming assistant contains ethylene glycol and lauryl sodium sulfate. The novel active packaging film contains broad-spectrum long-acting antibacterial beta-cyclodextrin inclusion compound particles. The inclusion compound particles account for 4-24 percent of the weight of the active antibacterial film. The particles are 1-100 nanometers in particle size; through the slow release of essential oil in the inclusion compound and the migration in the film, an antibacterial action is performed on surfaces of foods finally. The active packaging film provided by the invention is a colorless transparent film which is light in spice smell, consistent in thickness, fine and smooth in hand feeling and better in mechanical property, is not obvious in bubbles, is complete, bright and clean, and is capable of meeting the mechanical requirement of food packaging. The transparency is good, so that content held in the active packaging film can be clearly seen when the active packaging film is used for packaging the foods.

Description

technical field [0001] The invention relates to an active packaging film and a preparation method thereof, belonging to the technical field of packaging materials. Background technique [0002] Food packaging mostly uses plastic-based inert packaging materials, which do not have any biological activity, but maintain food quality by physically isolating the packaged food from the outside world. However, with the large-scale development of food processing, transportation and storage integration technology, the circulation of food has expanded to all parts of the world. It is not only necessary for food to maintain a long shelf life, but also to maintain the quality of nutrition and freshness. At the same time, as people pay more attention to their health and the continuous improvement of food quality requirements, they hope to reduce chemical additives as much as possible in food processing, so this poses new challenges to the safety and quality of food storage from the proces...

Claims

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Application Information

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IPC IPC(8): C08L29/04C08L5/16C08J5/18B65D65/46
Inventor 邓靖李文谭兴和郝喜海
Owner 邓靖
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