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Method of manufacturing edible spray printing ink through natural pigment

A technology of natural pigments and inks, applied in inks, natural dyes, chemical instruments and methods, etc., can solve problems such as environmental pollution, affecting food safety, etc., and achieve the effects of high extraction efficiency, solving clogging of nozzles, and simple preparation process.

Inactive Publication Date: 2018-10-02
CITY COLLEGE OF DONGGUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a method of using natural pigments to produce edible inkjet printing inks, in order to solve the problems that the toxic ingredients in the existing inkjet printing inks will affect the safety of food and cause pollution to the environment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A kind of method utilizing natural pigment to manufacture edible jet printing ink comprises the steps:

[0045] a. Place the red dragon fruit in the refrigerator to freeze and take it out, remove the peel to obtain the pulp;

[0046] B, get 300g pulp and put into 600g, 70% ethanol solution and mix to obtain pulp-ethanol mixture, the pulp-ethanol mixture is heated and reacted in a water bath at 40°C for 5 hours; the pulp and ethanol in the pulp-ethanol mixture The mass ratio is 5:7;

[0047] C, after completion of the reaction, the pulp-ethanol mixture is removed from the pomace, coarsely filtered with a filter screen, and then filtered with a filter membrane of 0.45 μm to obtain the dragon fruit pigment solution;

[0048] D, the pitaya pigment solution is put into the vacuum dryer and concentrated, and the concentrated pitaya pigment solution is measured by a colorimeter and coated on white paper until the color reaches a density of 1.0;

[0049]e, the concentrated pi...

Embodiment 2

[0051] A kind of method utilizing natural pigment to manufacture edible jet printing ink comprises the steps:

[0052] a, place the dragon fruit in the refrigerator and take it out after freezing, remove the pericarp to obtain the pulp;

[0053] b. Put the pulp into the ethanol solution and mix to obtain the pulp-ethanol mixture, and heat the pulp-ethanol mixture in a water bath at 35°C for 7 hours; the mass ratio of pulp to ethanol in the pulp-ethanol mixture is 1: 1.5;

[0054] c, after the reaction is completed, the pulp-ethanol mixture is removed from the pomace, coarsely filtered, and then filtered with a filter membrane of 0.45 μm to obtain the dragon fruit pigment solution;

[0055] D, the pitaya pigment solution is put into the vacuum dryer and concentrated, and the concentrated pitaya pigment solution is measured by a colorimeter and coated on white paper until the color reaches a density of 1.0;

[0056] e, the concentrated dragon fruit pigment solution, mass fract...

Embodiment 3

[0058] A kind of method utilizing natural pigment to manufacture edible jet printing ink comprises the steps:

[0059] a, place the dragon fruit in the refrigerator and take it out after freezing, remove the pericarp to obtain the pulp;

[0060] b. Put the pulp into the ethanol solution and mix to obtain the pulp-ethanol mixture, and heat the pulp-ethanol mixture in a water bath at 45°C for 10 hours; the mass ratio of pulp to ethanol in the pulp-ethanol mixture is 1: 1;

[0061] c, after the reaction is completed, the pulp-ethanol mixture is removed from the pomace, coarsely filtered, and then filtered with a filter membrane of 0.45 μm to obtain the dragon fruit pigment solution;

[0062] D, the pitaya pigment solution is put into the vacuum dryer and concentrated, and the concentrated pitaya pigment solution is measured by a colorimeter and coated on white paper until the color reaches a density of 1.0;

[0063] e, the concentrated dragon fruit pigment solution, the mass fr...

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Abstract

The invention discloses a method of manufacturing edible spray printing ink through a natural pigment. The method takes an edible dragon fruit as a main raw material; a preparation technology is simple; preparation raw materials are cheap and easy to obtain; the spray printing ink is excellent in printability and nontoxic; the manufactured spray printing ink is high in tinting strength and dryingrate, smooth to deliver, and easy to clean, and does not block an ink nozzle; the raw materials adopted by the method and water have very good compatibility; volatile media such as an alcohol solutionand the water are adopted, so that the prepared printing ink can be dried naturally on a printed material; arabic gum is adopted, so that a binding force between the spray printing ink and a printingmaterial can be increased; the fastness of an ink layer is improved; the printing ink on the spray printing material is not easily rubbed off after drying and has excellent wear resistance; with theadoption of table salt and white vinegar, an effect of reducing surface tension of the ink is exerted; the ink is more easily ejected; at the same time, the viscosity is also reduced; and the method solves the problem of blocking of the nozzle due to sediment of ingredients of the existing printing ink.

Description

technical field [0001] The invention relates to the technical field of printing, in particular to a method for producing edible jet printing ink by utilizing natural pigments. Background technique [0002] At present, the production date of food and medicine needs to be printed by the manufacturer on the outer packaging of the food by inkjet. Some companies also need to print some special marks out of consideration for food quality and anti-counterfeiting. Inkjet printing equipment is generally connected to various modern industrial production lines, effectively ensuring the variable printing of food and medicine. There are many types of inkjet inks at home and abroad, mainly solvent-based inkjet inks and water-based inkjet inks. Solvent-based inkjet inks contain organic solvents. If they are transferred, they will have serious adverse effects on human health; although water-based inkjet inks are hygienic and environmentally friendly, the pigments are generally inedible, an...

Claims

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Application Information

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IPC IPC(8): C09D11/328C09D11/30C09D11/38C09B61/00C09B67/54
CPCC09B61/00C09B67/0096C09D11/30C09D11/328C09D11/38
Inventor 刘武辉吴莺杨玉春
Owner CITY COLLEGE OF DONGGUAN UNIV OF TECH
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