? Amaranth is an annual herb, has been cultivated from north to south, but also wild, widely distributed. Its stems and leaves are purple or green, and it is a vegetable rich in nutrients. Its seeds can be used as a snack ingredient. Purple stems and leaves contain bright pigments, can be used as food dyes, can also be used for liquid coloring, and non-toxic, harmless, stable performance. The leek pigment extraction method is simple, suitable for small units and individual business catering industry adoption. ? Extraction method: First, the purple amaranth (can also be used to discard the stem) washed, chopped, smashed, and then wrapped with several layers of gauze, squeezed and filtered to take its juice. The residue can be boiled for a few more minutes with 1/2 ounce of water and squeezed and filtered as above. Combine the two filtrates, boil for about 5 minutes, and filter. When the filtrate is heated and concentrated to 1â„4 of its original volume, the upper liquid is decanted, and 3-4 times of absolute ethanol (alcohol) is added after cooling. After standing for 24 hours, the lower rose liquid is extracted. pigment. (You can)
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