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Pitaya peel-based edible packaging film and preparation method thereof

A technology of pitaya peel and packaging film, applied in packaging, wrapping paper, transportation and packaging, etc., to achieve excellent antibacterial properties, simple preparation method, and the effect of improving shelf life

Active Publication Date: 2016-03-23
SICHUAN AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of the shortcomings of the prior art, one of the purposes of the present invention is to provide a method for preparing an edible packaging film based on pitaya peel. The packaging film prepared by this method not only has good mechanical properties and strong barrier properties, but also has biodegradable properties. It solves the problems caused by plastic packaging materials, and also improves the added value of dragon fruit peel

Method used

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  • Pitaya peel-based edible packaging film and preparation method thereof
  • Pitaya peel-based edible packaging film and preparation method thereof
  • Pitaya peel-based edible packaging film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Taking the edible packaging film based on pitaya peel, its components are pitaya peel slurry concentrations are product 1: 15%, product 2: 20%, product 3: 25%, product 4: 30%, product 5: 35% , Product 6: 40%, Product 7: 45%; the amount of sodium alginate and glycerin added is 0.35% and 0.20% of the above slurry, respectively;

[0036] (1) Choose fresh pitaya peel and cut it into 1.5×1.5cm cubes, blanching with 2% sodium chloride solution at 85°C for 2 minutes, pick up and rinse with cold water, and drain;

[0037] (2) According to the different ratios of dragon fruit peel: distilled water (ranging from 15:85 to 45:55), put it into a beater and beat for 10 minutes to make a film slurry;

[0038] (3) Add 0.35% sodium alginate and 0.20% glycerin to the membrane slurry, and homogenize for 8 minutes at a homogenization speed of 16000r / min to make the slurry fine and uniform;

[0039] (4) Degas for 50 minutes when the vacuum degree is -0.095MPa, and pour out the membrane slu...

Embodiment 2

[0042] The edible packaging film based on pitaya peel, its component is pitaya 35% (W / W), water 65% (W / W); Make film slurry, sorbitol is 0.2% of making film slurry quality , the sodium carboxymethyl cellulose addition is 0.35% of the quality of the film slurry, and the preparation method is the same as in Example 1.

Embodiment 3

[0044] The edible packaging film based on pitaya peel is composed of 35% pitaya peel and 65% water; the film slurry is made, glycerin is 0.3% of the mass of the film slurry, and the amount of sodium alginate added is Membrane slurry 0.4%, preparation method is the same as embodiment 1.

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Abstract

The invention provides a preparation method for a pitaya peel-based edible packaging film. The preparation method is characterized by comprising the following steps: (1) washing and stripping and slicing pitaya peels; (2) performing blanching treatment; (3) adding water and pulping to obtain pitaya peel pulp, wherein the mass ratio of matter obtained in the step (2) to the water is (15 to 45):100; (4) adding a thickening agent and a plasticizer into the pitaya peel pulp, wherein the mass ratio of the thickening agent to the pitaya peel pulp is (0 to 0.4):100, and the mass ratio of the plasticizer to the pitaya peel pulp is (0 to 0.3):100; the thickening agent is sodium alginate or sodium carboxymethylcellulose, and the plasticizer is glycerinum or sorbitol; (5) performing homogenization treatment at a treatment rate of 15000 to 20000 r / min for 5 to 8min; then, performing degassing treatment and standing to obtain shaped pulp; (6) casting and drying, and then performing film uncovering to obtain the pitaya peel-based edible packaging film. The invention also provides the packaging film prepared by the preparation method.

Description

technical field [0001] The invention belongs to the field of food engineering, and in particular relates to an edible packaging film based on pitaya peel and a preparation method thereof. technical background [0002] In recent years, domestic food-related problems have become increasingly prominent, and how to solve food-related problems has become an important topic for the government and scientific researchers. Among the many food-related issues, the packaging of food and the disposal of perishable food waste are more eye-catching. [0003] Because plastic packaging bags are difficult to degrade and have existing or potential food safety hazards, they have been gradually abandoned by developed countries. Italy, the world's largest food exporter, has clearly banned the use of plastic food packaging bags in 1991. [0004] Perishable food waste mainly refers to certain parts of perishable food that are not used as raw materials for food processing during food processing, s...

Claims

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Application Information

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IPC IPC(8): C08L97/02C08L5/04C08L1/28C08K5/053C08J5/18B65D65/46
CPCB65D65/463C08J5/18C08J2397/02C08L97/02C08L2203/16C08L2205/03C08L5/04C08K5/053C08L1/286
Inventor 吴贺君董知韵路萍刘耀文刘韫滔林德荣叶劲松胡彪刘博郭玉春
Owner SICHUAN AGRI UNIV
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