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Food fresh keeping film and preparation method thereof

A food preservation film and food preservation technology, which is applied in the field of storage and preservation of agricultural products, can solve the problems of discarding resources and waste, and achieve the effects of increasing the storage period, inhibiting water evaporation and reducing costs

Inactive Publication Date: 2014-09-10
SHANGHAI OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Pomegranate peel is the dry peel of pomegranate, which is a by-product of pomegranate processing, accounting for 20% to 30% of the pomegranate quality. There are six major pomegranate producing areas in my country, and the pomegranate production is abundant, but the pomegranate peel has not been fully utilized. Most of them are discarded, resulting in a serious waste of resources

Method used

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  • Food fresh keeping film and preparation method thereof
  • Food fresh keeping film and preparation method thereof
  • Food fresh keeping film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Dry 300g of PP raw material at 80°C in advance. The dried PP raw material was passed through the torque rheometer twin-screw granulation equipment to obtain new resin granules, and the obtained new resin granules were passed through the single-screw blown film equipment to obtain the food preservation film A of the control group.

Embodiment 2

[0042] Dry 300g of PE raw material at 80°C in advance. The dried PE raw material was passed through the twin-screw granulation equipment of the torque rheometer to obtain new resin particles, and the obtained new resin particles were passed through the single-screw blown film equipment to obtain the food preservation film B of the control group.

Embodiment 3

[0044]The mass concentration of extracts of grape seed, pomegranate peel, ginger, licorice, green tea and honeysuckle is 2%, and the total amount of grape seed, pomegranate peel, ginger, licorice, green tea and honeysuckle extract and PE raw material is determined to be 300g, so The quality of grape seed, pomegranate peel, ginger, licorice, green tea and honeysuckle extracts and PE raw materials are 6g, 6g, 6g, 6g, 6g, 6g, 264g respectively. Dry 264g of PE raw material at 80°C in advance. Stir the dried PE raw material and essential oil homogeneously, then modify it through twin-screw granulation equipment, and pass the obtained modified resin through single-screw film blowing equipment to prepare food preservation film C.

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Abstract

The invention discloses a food fresh keeping film and a preparation method thereof. Polyethylene (PE) or polypropylene (PP) or high-barrier property material ethylene / ethylene vinyl alcohol (EVOH) is used as a base film raw material, and plant extracts of grape seeds, pericarpium granati, ginger, liquorice root, green tea and honeysuckle are used as active ingredients. The food fresh keeping film can be prepared by adopting the following steps: and after uniformly mixing raw materials and the plant extracts, preparing a modified resin with a fresh keeping active ingredient through a dual-screw extruder, and then extruding the modified resin into a blown film. According to the food fresh keeping film, the food spoilage can be effectively delayed and the microorganism reproduction can be inhibited; and meanwhile, the food fresh keeping film plays a role in resisting oxidation, and is capable of effectively prolonging low-temperature and room-temperature storage periods of fruit and vegetable products.

Description

technical field [0001] The invention belongs to the field of storage and preservation of agricultural products, in particular to a food preservation film and a preparation method thereof. Background technique [0002] Food safety is inseparable from food packaging safety. Packaging plays an irreplaceable role in protecting food, preventing food from being contaminated by external microorganisms or other substances, preventing or reducing food oxidation and other reactions, and is an important means of food preservation. Natural antioxidant and antibacterial preservatives refer to substances with antioxidant activity extracted from natural animals, plants or their metabolites. Compared with synthetic preservatives, they have the advantages of naturalness, high efficiency, and low toxicity. Research and development of broad-spectrum, efficient and safe natural product preservatives has become one of the hot spots in the field of food additive research today. The present inv...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L23/12C08L23/08C08K5/00B32B27/08B32B27/32B32B27/30B65D65/38B65D65/40
CPCC08K5/0008B32B27/08B32B27/306B32B27/32B32B2323/04B32B2323/10B32B2439/70B65D65/38B65D65/40C08J5/18C08J2323/06C08J2323/08C08J2323/12C08L2201/08C08L2203/16C08L23/06C08L23/0861C08L23/12
Inventor 李立韩伟月李娜朱勤魏妮娜陈小宏
Owner SHANGHAI OCEAN UNIV
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