Natural indigo prepared by froth flotation method and its preparation method and device

Abstract

The invention provides an indigo prepared by adopting the froth-flotation method, which comprises the components by weight percentages as follows: 2.63%-5.51% of indigo blue and 0.13%-0.61% of indigo red. The invention also provides a preparation method and a device for the indigo. The preparation method for the indigo of the invention has the advantages that the operation and the management are convenient, the separation is not limited by environment or climate, and the running is stable and reliable. The preparation method is a novel technique for indigo separation; by adopting the novel technology for machining, the large scale production can be realized on the basis of ensuring the drug quality, in addition, the indigo product quality is increased; the preparation method has simple and convenient operation and low technical difficulty. The quality of the indigo which is prepared by the preparation method is higher than the pharmacopoeia standards obviously.

Description

technical field The invention relates to a new preparation method of indigo naturalis and a device adopting the method, which is especially suitable for the separation of indigo naturalis from crude indigo. It belongs to the field of medicine. Background technique Indigo Daisy is the dry powder or agglomerate obtained by processing the leaves or stems of Baphicacanthus cusia (Nees) Bremek., Polygonum tinctorium Ait. or Isatis indigotica Fort. . Indigo Daisy is mild in taste and cold in nature. It has the effects of clearing away heat and detoxification, cooling blood, and relieving convulsions. It is often used for febrile toxins in seasonal diseases, vomiting and hemoptysis. In recent years, it has been used for bleeding caused by bronchiectasis. The processing steps mainly include raw material collection, soaking and fermentation, beating indigo, washing flowers, etc. Due to the different raw materials used, in some places, after beating indigo, the semi-finished "starch...

AI Technical Summary

Problems solved by technology

The processing steps mainly include raw material collection, soaking and fermentation, beating indigo, washing flowers, etc. Due to the different raw materials used, in some places, after beating indigo, the semi-finished "starch" is directly mixed with water, then stirred to collect the foam, and then dried to become Indigo Naturalis; Where other substances (blood) need to be added and then stirred, that is, "washing flowers". Traditional processing is done by experienced pharmacists. The application of this technology in separation is difficult and not universally applicable; modern Qingdai processing enterprises will acquire Add a certain amount of water to the semi-finished product in the pool, stir it fully with an electric mixer, so that a large amount of foam will be generated on the liquid surface, take out the foam on the gauze sieve, put it in the sun and dry it, that is, Indigo Naturalis. At this time, it is a porous foamy mass. Crushed, sieved, mixed evenly and packaged after passing the inspection to get the finished product

At present, there is no relevant report on the extraction and separation of traditional Chinese medicine Qingdai and other medicinal materials by foam flotation, and there is no relevant report on the specific separation device.

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