Application of natural dyes from balsamine in dyeing
A technology of natural dyes and impatiens, applied in natural dyes, dyeing methods, azo dyes, etc., can solve the problems of waste of raw materials and time, low extraction rate, etc., and achieve the effect of low cost, high extraction efficiency, and wide range of raw materials
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[0023] Example 1
[0024] Weigh the crushed impatiens, add a 40% ethanol aqueous solution with a volume ratio of 2, the pH value is 2, the material-to-liquid mass ratio is 1:15, the ultrasonic power is 400W at 20°C, and after extraction for 30 minutes, the filter residue and natural content are filtered Dye filtrate; after leaching the filter residue with 50% ethanol aqueous solution at 20°C for 60 minutes, filter, combine the two filtrates, and centrifuge the filtrate at a centrifugal speed of 3000r / min and a centrifugal time of 10min. Separate the supernatant The supernatant was concentrated under reduced pressure to obtain crude balsam balsam natural dye; after the crude balsam balsam natural dye was dissolved in deionized water, it was added to a macroporous adsorption resin column, and the flow rate was controlled at 2 mL / min until the adsorption was saturated. Afterwards, the resin column was rinsed with deionized water to remove impurities, and then eluted with an ethanol ...
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[0028] Example 2
[0029] Weigh the crushed impatiens, add 50% ethanol aqueous solution by volume, pH 3, mass ratio of material to liquid 1:30, ultrasonic power 700W, after extraction at 40℃ for 60min, filter residue and natural content Dye filtrate; after extracting the filter residue with a 75% ethanol solution by volume at 65°C for 80 min, filter, combine the two filtrates, centrifuge at a centrifugal speed of 6000r / min, and centrifuge for 20 min. Separate the supernatant and After precipitation, the supernatant was concentrated under reduced pressure to obtain crude balsam balsam natural dye; after the crude balsam balsam natural dye was dissolved in deionized water, it was added to a macroporous adsorption resin column, and the flow rate was controlled at 4 mL / min. After the adsorption was saturated, Rinse the resin column with deionized water to wash away impurities, and then eluted with an ethanol aqueous solution with a pH of 4 and a volume ratio of 60%. The obtained elu...
Example Embodiment
[0033] Example 3
[0034] Weigh the crushed impatiens, add a 60% ethanol aqueous solution by volume, pH 4, material-to-liquid mass ratio 1:45, ultrasonic power 800W, extract at 50°C for 70 minutes, and filter to obtain filter residue and natural dye Filtrate: After leaching the filter residue with a volume ratio of 80% ethanol aqueous solution at 50°C for 90 minutes, filter, combine the two filtrates, and centrifuge the filtrate at a centrifugal speed of 7000r / min and a centrifugal time of 30min. Separate the supernatant and After precipitation, the supernatant was concentrated under reduced pressure to obtain crude balsam balsam natural dye; after the crude balsam balsam natural dye was dissolved in deionized water, it was added to a macroporous adsorption resin column, and the flow rate was controlled at 4 mL / min. After the adsorption was saturated, Rinse the resin column with deionized water to wash away impurities, and then eluted with an ethanol aqueous solution with a pH of...
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