Processing of indigo naturalis powder

In summer and autumn, pick the stems and leaves of marigold, put them in a jar, soak them thoroughly with clear water for 2-3 days until the leaves can fall off the branches, and take out the branches. Add 65,438+0kg of lime to every 65,438+00kg of leaves, and stir thoroughly. When the immersion liquid changes from dark green to deep purple, the blue foam on the liquid surface is taken out and dried to obtain indigo naturalis with the best quality. When the foam decreases, stop stirring and let it precipitate for 2-3 hours, then release the supernatant and screen the precipitate to remove debris. And drying the precipitate to obtain secondary indigo naturalis.

According to 1992 "China Chinese Herbal Medicine" magazine, compared with indigo collected in Chinese mainland, it was found that the contents of indirubin and indigo in deep blue indigo were higher, while the content of indigo in gray blue was lower and the quality was worse.

After collecting and analyzing 25 samples of indigo naturalis sold in various markets in Taiwan Province Province, it was found that all the other indigo naturalis sold in the market were pigments and did not contain any effective ingredients at all, except the gray-blue variety used by the Chinese Medicine Bureau.

Indirubin and indigo are the main components in indigo naturalis.

Therefore, due to different sources of medicinal plants and different production processes, indigo powder has different grades, colors and effects, but blue is still the top grade. Whether pigment or effective ingredients are added must be tested before we know. Production technology of indigo naturalis extract and technology of indigo naturalis paste, indigo naturalis powder and indigo naturalis powder

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