Extraction, separation and dyeing application of natural dye
A natural dye, a natural technology, applied in the direction of natural dyes, azo dyes, organic dyes, etc., to achieve the effect of simple extraction process, good ecological compatibility, and rich sources
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Embodiment 1-6
[0030] According to the data shown in table 1, the extraction and separation of step (1) pituitary red natural dye are as follows:
[0031] Remove the seed coat of the mature pituitary fruit, take out the red seeds, put them into a closed container of methanol-ethanol-water, adjust the pH value of the solution with an alkali agent, boil and extract for 2 hours under a vacuum of 0.05MPa, and then filter with suction. Filter residue repeats above-mentioned leaching step 2-3 times, merges filtrate. The filtrate was subjected to polyamide column chromatography, eluted with ethyl acetate-n-hexane solution, and then the eluate was concentrated under reduced pressure in a vacuum concentration tank with a vacuum degree of 0.06-0.08MPa. The solvent was recovered and dried to obtain a red color block, grind and disperse the color block to 200-300 mesh, and obtain Pittosporum red natural dye.
[0032] According to modification and dyeing condition of table 2, the reed dyeing of step (2)...
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Application Information
- IPC
- C09B61/00; B27K9/00
- Inventors
- 纪俊玲; 汪信