Preparation method of shepherd's-purse edible film

A technology of shepherd's purse and mixed slurry, which is applied in food preparation, sustainable manufacturing/processing, food science and other directions, can solve problems such as low utilization rate, and achieve the effects of convenient operation, good social and economic benefits, and simple preparation method.

Inactive Publication Date: 2015-12-30
HENAN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, shepherd's purse is mainly eaten as a vegetable in our country, and it is rarely further developed, and the utilization rate is low.

Method used

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  • Preparation method of shepherd's-purse edible film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A preparation method of shepherd's purse edible film, comprising the following steps:

[0026] (1) Pretreatment of shepherd's purse: select fresh shepherd's purse, remove rotten leaves, withered yellow leaves, keep the roots, and clean them;

[0027] (2) Color protection treatment: cut the shepherd's purse washed in step (1) into 1cm long sections, and boil it with 0.2% Na 2 SO 3 After blanching in the solution for 3 minutes, remove and drain;

[0028] (3) Pulping: mashing the shepherd's purse after draining in step (2) into a shepherd's purse pulp with a tissue masher, and then refining the shepherd's purse pulp with a colloid mill to obtain a shepherd's purse pulp with an average particle size of 100 μm;

[0029] (4) Preparation of thickener mixture: Add tapioca starch into water, the mass fraction of which is 1.0%; bathe in water at 85°C for 90 minutes to obtain tapioca starch paste, then add fish skin gelatin, and fully dissolve to obtain Thickener mixed solution...

Embodiment 2

[0034] A preparation method of shepherd's purse edible film, comprising the following steps:

[0035] (1) Pretreatment of shepherd's purse: select fresh shepherd's purse, remove rotten leaves, withered yellow leaves, keep the roots, and clean them;

[0036] (2) Color protection treatment: cut the shepherd's purse washed in step (1) into 1.5cm long sections, and boiled with 0.5% Na 2 SO 3 After blanching in the solution for 1.5 minutes, remove and drain;

[0037] (3) Pulping: mashing the shepherd's purse after draining in step (2) into a shepherd's purse pulp with a tissue masher, and then refining the shepherd's purse pulp with a colloid mill to obtain a shepherd's purse pulp with an average particle size of 100 μm;

[0038] (4) Preparation of thickener mixture: Add tapioca starch into water, the mass fraction of which is 1.5%; bathe in water at 90°C for 80 minutes to obtain tapioca starch paste, then add fish skin gelatin, and fully dissolve to obtain Thickener mixed solut...

Embodiment 3

[0043] A preparation method of shepherd's purse edible film, comprising the following steps:

[0044] (1) Pretreatment of shepherd's purse: select fresh shepherd's purse, remove rotten leaves, withered yellow leaves, keep the roots, and clean them;

[0045] (2) Color protection treatment: cut the shepherd's purse washed in step (1) into 2cm long segments, and use boiled 0.4% Na 2 SO 3 After blanching in the solution for 1 min, remove and drain;

[0046] (3) Pulping: mashing the shepherd's purse after draining in step (2) into a shepherd's purse pulp with a tissue masher, and then refining the shepherd's purse pulp with a colloid mill to obtain a shepherd's purse pulp with an average particle size of 100 μm;

[0047] (4) Preparation of thickener mixture: add tapioca starch into water, the mass fraction of which is 2.0%; bathe in water at 80°C for 90 minutes to obtain tapioca starch paste, then add fish skin gelatin, and dissolve fully to obtain Thickener mixed solution, wher...

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Abstract

The invention discloses a preparation method of a shepherd's-purse edible film, which comprises the steps of shepherd's-purse pretreatment, color-protecting treatment, pulping, preparation of thickener mixed liquor, preparation of mixed slurry, degassing, flow casting, drying, film uncovering, and the like. According to the invention, shepherd's-purse slurry is taken as a main base material, tapioca starch and fish gelatin are added as a thickener, and glycerol is added as a plasticizer, and through blending, the components are interacted so as to achieve the purpose of synergistic interaction, so that a shepherd's-purse edible film with good mechanical properties and barrier properties is obtained. Experimental results show that the thickness of the shepherd's-purse edible film is 0.09-0.15 mm, the tensile strength is 10.8-14.1 MPa, the elongation at break is 19.7-24.2%, the water vapor permeability is 16.8-21.5*10<-10> g/m.s.Pa, and the oxygen permeability is 8.3-10.5*10<-14> cm<3>/m.s.Pa. The shepherd's-purse edible film prepared according to the invention is wide in raw material source, low in cost and rich in nutrition, can be directly eaten, and can also be used as a skin packaging material of food.

Description

technical field [0001] The invention relates to a preparation method of shepherd's purse edible film, which belongs to the technical field of edible material processing. Background technique [0002] With the waste of resources caused by non-degradable packaging materials such as plastics and the environmental pollution caused by their wastes, the research on using natural polymer materials to prepare degradable and environmentally friendly biopolymer packaging materials has attracted more and more attention. Among them, edible biopolymer film (referred to as edible film) has become a hot spot in the fields of food, medicine and packaging due to its advantages of sufficient raw material sources, edible and non-polluting. In recent years, fruit and vegetable edible films have appeared, which use fruits and vegetables as basic film-forming materials and add suitable additives, such as thickeners and plasticizers. Edible films for fruits and vegetables can be eaten directly, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23L1/212A23L1/0522A23L1/0562B65D65/46
CPCA23V2002/00B65D65/463A23V2200/242A23V2250/5118A23V2250/5432Y02A40/90Y02W90/10
Inventor 王新伟赵仁勇宋永令
Owner HENAN UNIVERSITY OF TECHNOLOGY
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