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Fruit cuticle-imitated compression-resistant germproof packaging film and preparation method thereof

A cuticle and anti-bacterial technology, which is applied in the field of packaging materials, can solve the problems of not being able to effectively prolong the storage period of fruits and have no antibacterial properties, and achieve obvious hydrophobicity, prolong shelf life, and inhibit the growth of microorganisms

Inactive Publication Date: 2013-03-13
SHANDONG INST OF COMMERCE & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the lack of antibacterial properties, it cannot effectively prolong the storage period of the fruit when applied to the packaging of the fruit.

Method used

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  • Fruit cuticle-imitated compression-resistant germproof packaging film and preparation method thereof
  • Fruit cuticle-imitated compression-resistant germproof packaging film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Preparation method of imitation fruit cuticle anti-compression and anti-bacteria packaging film

[0044] (1) Preparation of konjac glucomannan base liquid: Add 5.0% paraffin and water into a beaker, place the beaker on a magnetic stirrer at 1000 r / min, heat to 75°C, stir to dissolve; use 1 mol / L NaOH Adjust the pH to 10, then add 10% of konjac glucomannan esterification modified product, 1% of chitosan, 0.12% of xanthan gum, 0.75% of carrageenan, and stir at 1000 r / min for 60 min;

[0045] (2) Preparation of synergist solution: take another beaker, mix 3% polycaprolactone (PCL), 0.5% epoxy soybean oil, 0.5% glycerin with water, heat at 1000 r / min to 55°C , stir evenly;

[0046] (3) Preparation of composite membrane solution: Add the prepared synergist solution into the konjac glucomannan base solution, place it on a magnetic stirrer (1000 r / min; 60°C) and stir continuously for 60 min, then, in Degas on a centrifuge (3500 r / min) for 30 min;

[0047] (4) The production...

Embodiment 2

[0053] Preparation method of imitation fruit cuticle anti-compression and anti-bacteria packaging film

[0054] (1) Preparation of konjac glucomannan base liquid: Add 5.5% paraffin and water into a beaker, place the beaker on a magnetic stirrer at 1000 r / min, heat to 80°C, stir to dissolve; use 1 mol / L NaOH Adjust the pH to 11, then add 20% of konjac glucomannan esterification modified product, 1.5% of chitosan, 0.15% of xanthan gum, 0.85% of carrageenan, and stir at 1000 r / min for 75 min;

[0055] (2) Preparation of synergistic solution: take another beaker, mix polycaprolactone (PCL) 4%, epoxidized soybean oil 1%, glycerin 1% with water, heat at 1000 r / min to 63°C , stir evenly;

[0056] (3) Preparation of composite membrane solution: The prepared synergist solution was added to the konjac glucomannan base solution, placed on a magnetic stirrer (1000 r / min; 63°C) and stirred continuously for 75 min. Next, degas for 45 min on a centrifuge (3500 r / min);

[0057] (4) The pro...

Embodiment 3

[0062] Preparation method of imitation fruit cuticle anti-compression and anti-bacteria packaging film

[0063] (1) Preparation of konjac glucomannan base solution: Add 6.5% paraffin and water into a beaker, place the beaker on a magnetic stirrer at 1000 r / min, heat to 85°C, stir to dissolve; use 1 mol / L NaOH Adjust the pH to 12, then add 25% of konjac glucomannan esterification modified product, 1.5% of chitosan, 0.18% of xanthan gum, 1% of carrageenan, and stir at 1000 r / min for 120 min;

[0064] (2) Preparation of synergistic solution: take another beaker, mix polycaprolactone (PCL) 5%, epoxidized soybean oil 1.5%, glycerin 1% with water, heat at 1000 r / min to 65°C , stir evenly;

[0065] (3) Preparation of composite membrane solution: Add the prepared synergist solution into the konjac glucomannan base solution, place it on a magnetic stirrer (1000 r / min; 65°C) and stir continuously for 120 min, then, in Degas for 45 min on a centrifuge (3500 r / min);

[0066] (4) Fabric...

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Abstract

The invention belongs to the field of a packing material, and particularly relates to a fruit cuticle-imitated compression-resistant germproof packaging film and a preparation method thereof. The fruit cuticle-imitated compression-resistant germproof packaging film provided by the invention comprises the following components: konjac glucomannan-esterified and modified product, paraffins, chitosan, carrageenan, xanthan gum, polycaprolactone, epoxidized soybean oil, glycerol and water. According to the structure of the fruit cuticle, and in combination with the good film-forming property of the konjac glucomannan, the film which is good in biomechanical property and effective in barrier property can be prepared, so that the film not only can restrain the absorbing, breeding and infecting of the microorganism on the surface of the film, but also can play a part in press resistance like a strengthening rib. The mechanical property and antimicrobial property of the film can be enhanced due to the added polycaprolactone, chitosan, carrageenan, reducing glue, epoxidized soybean oil, glycerol, paraffins and the like. The preparation method provided by the invention is simple in technology, and the materials are convenient to take and low in price, so that the fruit shelf life can be obviously prolonged.

Description

technical field [0001] The invention belongs to the field of packaging materials, in particular to a pressure-resistant and anti-bacterial packaging film imitating fruit cuticles, and also relates to a preparation method of the packaging film. Background technique [0002] With the continuous improvement of people's quality of life, higher requirements are put forward for the edible and appearance quality of fruits. However, fruits are extremely vulnerable to mechanical damage and microbial infection during harvesting, storage, transportation and sales. Therefore, internal packaging of fruits is a necessary means to reduce friction, collision and extrusion with the outside world, resist microbial damage, and increase the added value of fruits and vegetables. At present, domestic fruit inner packaging mainly includes plastic / paper trays, plastic net sets, various plastic films and various fruit packaging boxes. Plastic / paper trays can effectively alleviate the mechanica...

Claims

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Application Information

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IPC IPC(8): C08L5/02C08L91/06C08L5/08C08L5/00C08L67/04C08K5/1515C08K5/053B65D65/46
Inventor 张长峰魏雪琴庞杰寇丹丹
Owner SHANDONG INST OF COMMERCE & TECH
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