A kind of preparation technology of edible red pigment

A preparation process and technology for red pigment, applied in the field of preparation technology of edible red pigment, can solve the problems of high cost, complex process and the like, and achieve the effects of high purity, low process cost, simple and reasonable process

Inactive Publication Date: 2017-06-09
林木财
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Natural pigments can better imitate the color of natural objects, and the tone is more natural, but the process is more complicated and the cost is higher

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Embodiment 1 Prepare thearubigin with 10 kg of tea powder, comprising the following steps: collect high-quality tea powder produced during the tea making process, grind it into tea powder, pass through a 60-mesh sieve, and take 10 kg for later use; pour 40 kg of clear water into the reaction kettle, Add tea powder while heating and stirring, boil for 3 minutes, pour out the tea and filter to obtain the filtrate; heat the filtrate to 40°C, then add NaOH solution while heating to make the pH value of the filtrate reach about 9, heat it to 75°C and keep it still Set aside for 6h; filter and dry to obtain red powder, add ethanol and stir for 30min, let stand for 2h, filter and dry to obtain thearubigin.

Embodiment 2

[0012] Embodiment 2 Prepare thearubigin with 40kg of tea powder, including the following steps: collect high-quality tea dust produced in the tea making process, grind it into tea powder, pass through a 60-mesh sieve, and take 40kg for later use; pour 150kg of clear water into the reaction kettle, Add tea powder while heating and stirring, boil for 3 minutes, pour out the tea and filter to obtain the filtrate; heat the filtrate to 40°C, then add NaOH solution while heating to make the pH value of the filtrate reach about 9, heat it to 75°C and keep it still Set aside for 6h; filter and dry to obtain red powder, add ethanol and stir for 30min, let stand for 2h, filter and dry to obtain thearubigin.

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PUM

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Abstract

The invention relates to a preparation process of edible red pigment, which comprises the following steps: collecting high-quality tea dust produced in the tea making process, grinding it into tea powder, passing through a 60-mesh sieve, and taking 8-10 parts for later use; mixing 30-40 parts of clear water Pour into the reaction kettle, add tea powder while heating and stirring, boil for 3 minutes, pour out the tea and filter to obtain the filtrate; heat the filtrate to 40°C, then add NaOH solution while heating to make the pH of the filtrate reach about 9, heat After reaching 75°C, keep it warm for 6 hours; filter and dry to get red powder, add ethanol and stir for 30 minutes, let stand for 2 hours, filter and dry to get thearubigin. The invention has simple and reasonable process, low process cost, can prepare thearubigin with natural color and high purity, and can be used as coloring agent for beverages and foods.

Description

technical field [0001] The invention relates to the field of chemical industry, in particular to a preparation process of edible red pigment. Background technique [0002] Food coloring is a kind of pigment, that is, a food additive that can be eaten in an appropriate amount and can change the original color of food to a certain extent. Food coloring is also the same as food flavoring, which can be divided into two types: natural and synthetic. Food pigments mainly refer to pigments extracted from animal and plant tissues, mostly plant pigments, including microbial pigments, animal pigments and inorganic pigments. The vast majority come from plant tissues, especially fruits and vegetables. High security, and some also have nutritional effects. Natural pigments can better imitate the color of natural objects, and the tone is more natural, but the process is more complicated and the cost is higher. Contents of the invention [0003] The purpose of the present invention i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B61/00
Inventor 林木财
Owner 林木财
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