Preparation method of edible ink
A kind of food and ink technology, applied in the direction of ink, chemical instruments and methods, azo dyes, etc., to achieve the effect of rich colors, good adhesion and simple process
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[0024] The invention discloses a preparation method of edible ink, firstly preparing monascus red pigment and green pigment.
[0025] The specific implementation method of preparing monascus red pigment is as follows:
Embodiment 1-1
[0027] (1) First put 2KG of red yeast rice and 6KG of edible alcohol with a purity of 70% into a container and mix them, stir for 3 minutes, then let stand and soak for 24 hours, and then filter the soaked mixture for the first time .
[0028] (2) Then the filter residue after the first filtration and the edible alcohol with a purity of 70% are put into the container and mixed, and the weight ratio of the filter residue and edible alcohol is 1: 3; after stirring for 3 minutes, let stand and soak for 24 hours, and let stand Finally, the soaked mixed solution is filtered for the second time.
[0029] (3) Clarify the filtrate filtered for the first time and the filtrate filtered for the second time for 3 hours, filter the supernatant through a polyamide nanofiltration membrane, and place the colloid on the polyamide nanofiltration membrane at 50°C drying in a constant temperature oven to obtain the monascus red pigment.
[0030] (4) Repeat step (2) twice, soak for the third and...
Embodiment 1-2
[0032] (1) First put 3KG of red yeast rice and 15KG of edible alcohol with a purity of 75% into a container and mix them, stir for 4 minutes, then let stand and soak for 22 hours, and then filter the soaked mixture for the first time .
[0033] (2) Then the filter residue after the first filtration and the edible alcohol with a purity of 75% are put into the container and mixed, and the weight ratio of the filter residue and edible alcohol is 1:5; after stirring for 4 minutes, let it stand and soak for 22 hours, and let it stand Finally, the soaked mixed solution is filtered for the second time.
[0034] (3) Clarify the filtrate filtered for the first time and the filtrate filtered for the second time for 4 hours, filter the supernatant through a polyamide nanofiltration membrane, and place the colloid on the polyamide nanofiltration membrane at 60°C drying in a constant temperature oven to obtain the monascus red pigment.
[0035] (4) Repeat step (2) twice, soak for the thi...
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Abstract
Description
Claims
Application Information
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