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Method for manufacturing degradable packaging film by tamarind seeds

A technology of packaging film and tamarind powder, which is applied in the field of food engineering, can solve the problems of unresearched film-forming process, low utilization rate, research on retention extraction process, etc., and achieve excellent antibacterial performance, low cost, and excellent mechanical properties. Effect

Inactive Publication Date: 2019-03-01
SICHUAN AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The non-fiber carbohydrate content in tamarind seeds is 65-73%, the fat content is 6-8%, the fiber content is 3-5%, the ash content is 2.5-3.2%, and the protein content is 15-20%. It is abundant, but its utilization rate is very low. The current technology largely stays in the research on the extraction process of tamarind gum, and its film-forming process has not been studied. In theory, tamarind can be used to make edible degradable packaging films

Method used

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  • Method for manufacturing degradable packaging film by tamarind seeds

Examples

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Effect test

Embodiment 1

[0029] A method of making degradable packaging film with tamarind seeds, comprising the following steps:

[0030] (1) Select the sweet-type small-curved fruit, remove the pulp and wash to obtain tamarind seeds, dry them at 50°C for 5 hours, then place them in a traditional Chinese medicine grinder for crushing, and pass through a 50-mesh sieve to obtain tamarind powder for later use ;

[0031] (2) Mix the tamarind seed powder obtained in step (1) with water according to a material-to-liquid ratio of 1:45g / mL, and heat the mixture to boiling for 40 minutes until the powder is completely dissolved, during which the lost moisture is constantly replenished;

[0032] (3) Step (2) is processed, and after the feed liquid is cooled, filter it with a 250-mesh filter bag, take the clear liquid, add 0.3% glycerin thereto, homogeneously degas, cast the film into a film, and obtain the finished product. The operation of the degassing treatment is to store the gas in the film-forming liqui...

Embodiment 2

[0037] A method of making degradable packaging film with tamarind seeds, comprising the following steps:

[0038] (1) Select the sweet-type small-curved fruit, remove the pulp and wash to obtain tamarind seeds, dry them at 80°C for 3 hours, then place them in a traditional Chinese medicine grinder for crushing, and pass through a 80-mesh sieve to obtain tamarind powder for later use ;

[0039] (2) Mix the tamarind seed powder obtained in step (1) with water according to the ratio of material to liquid of 1:60g / mL, heat the mixture to boiling for 55min until the powder is completely dissolved, and constantly replenish the lost moisture during the period;

[0040] (3) Step (2) is processed, and after the feed liquid is cooled, filter it with a 350-mesh filter bag, take the clear liquid, add 0.6% glycerin thereto, homogeneously degas, cast the film into a film, and obtain the finished product. The operation of the degassing treatment is to store the gas in the film-forming liqui...

Embodiment 3

[0045] A method of making degradable packaging film with tamarind seeds, comprising the following steps:

[0046] (1) Select the sweet small curved fruit, remove the pulp and wash to obtain tamarind seeds, dry at 65°C for 4 hours, then put them in a traditional Chinese medicine grinder and grind them, and pass through a 60-mesh sieve to obtain tamarind powder for later use ;

[0047](2) mixing tamarind seed powder obtained in step (1) with water according to the ratio of material to liquid is 1:50g / mL, heating the mixture to boiling for 50min until the powder is completely dissolved, during which the lost moisture is constantly replenished;

[0048] (3) Step (2) is processed, and after the feed liquid is cooled, filter it with a 300-mesh filter bag, take the clear liquid, add 0.5% glycerin therein, homogeneously degas, and form a film by casting method to obtain the finished product. The operation of the degassing treatment is: store the gas in the film-forming liquid for 50 ...

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Abstract

The invention provides a method for manufacturing a degradable packaging film by tamarind seeds, and belongs to the technical field of food engineering. The preparation method comprises the followingsteps that (1) the tamarind seeds are taken, pulverized in a Chinese medicine pulverizer after drying and screened by a 50-80 mesh sieve for standby application; (2) tamarind powder obtained in the step (1) and water are mixed according to the solid-liquid ratio of 1 to (45 to 60)g / mL, and the mixture is heated to boiling for 40-55min to dissolve the powder, and lost water is continuously replenished during heating; and (3) the step (2) is finished, liquid is cooled and filtered by a 250-350 mesh filter bag, clear liquid is taken and added with 0.3-0.6% glycerol, homogenizing degassing is performed, tape casting is performed for film forming, and then the degradable packaging film is obtained. The preparation process is simple, the operability is high, no additional thickener and film-forming agent need to be added, the obtained packaging film has good mechanical properties and a remarkable antibacterial effect, and the shelf life of foods can be prolonged.

Description

technical field [0001] The invention belongs to the technical field of food engineering, and in particular relates to a method for making a degradable packaging film with tamarind seeds. Background technique [0002] With the increasingly prominent problems of food safety and environmental pollution, the application of traditional plastic packaging in food is becoming less and less accepted by people, and an edible packaging film that is easy to degrade, edible, and friendly to food and the environment Gradually come into people's field of vision. Edible packaging film (EPF) is a film with a porous network structure formed by the interaction of different molecules with natural edible substances as raw materials. It is a food packaging material with great development potential and has good Prospects. [0003] At present, edible packaging films have been widely used in food packaging, and food packaging films made of various edible raw materials have been continuously develo...

Claims

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Application Information

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IPC IPC(8): C08J5/18C08L99/00
CPCC08J5/18C08J2300/16C08J2399/00
Inventor 陈安均刘孝平姜林君刘路刘兴艳申光辉黎杉珊
Owner SICHUAN AGRI UNIV
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