Method for preparing hydroxyl carthamus tinctorius yellow color A
A technology of hydroxysafflower and yellow pigment, which is applied in the field of preparation of hydroxysafflower yellow A, can solve the problems of being unsuitable for industrial production, and achieve the effects of easy elution and regeneration, low production cost and low price
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Embodiment 1
[0020] Take 0.4Kg of dried safflower, extract twice with 12Kg of deionized water, the extraction temperature is 60°C, the extraction time is 45min, the extracts are combined, filtered, and the filtrate is concentrated under reduced pressure at 60°C to a water extract with a specific gravity of about 1.10; the water extract Separation on a polyamide column (diameter-to-height ratio: 1:20), with a loading volume of 1:3. First rinse 3 column volumes with deionized water, then rinse 4 column volumes with 50% ethanol, collect the eluate, concentrate under reduced pressure at 60°C to a specific gravity of 1.05 to obtain a preliminary separation concentrate; the preliminary separation concentrate is put on the column For MDS-5 (diameter-to-height ratio: 1:10), the loading volume is 0.5:1. First, wash 2 column volumes with 10% ethanol, then wash 4 column volumes with 20% ethanol, and collect 20% ethanol. lotion. Thin-layer chromatography detection (developing solvent is ethyl acetate...
Embodiment 2
[0022] Take 0.4Kg of dried safflower, extract twice with 15Kg of deionized water, the extraction temperature is 80°C, the extraction time is 60min, the extracts are combined, filtered, and the filtrate is concentrated under reduced pressure at 60°C to a water extract with a specific gravity of about 1.05; the water extract Separation on the AB-8 column (diameter-to-height ratio: 1:20), and the loading volume is 1:2. First rinse 2 column volumes with deionized water, then rinse 4 column volumes with 30% ethanol, collect the eluate, concentrate under reduced pressure at 60°C to a specific gravity of 1.10 to obtain a preliminary separation concentrate; the preliminary separation concentrate is put on the column MDS-5 (diameter-to-height ratio: 1:10), the loading volume is 1:1, rinse with deionized water for 3 column volumes, then rinse with 30% ethanol for 4 column volumes, collect 30% ethanol The washing solution was detected by thin layer chromatography, combined with the eluen...
Embodiment 3
[0024] Take 1Kg of dried safflower, extract twice with 30Kg deionized water, extraction temperature is 70°C, extraction time is 80min, the extracts are combined, filtered, and the filtrate is concentrated under reduced pressure at 60°C to a water extract with a specific gravity of about 1.12; H103 column separation (diameter-to-height ratio 1:20), sample loading 1:3. First rinse 4 column volumes with deionized water, then rinse 4 column volumes with 40% ethanol, collect the eluate, concentrate under reduced pressure at 60°C to a specific gravity of 1.10 to obtain a preliminary separation concentrate; the preliminary separation concentrate is put on the column MDS-5 (diameter-to-height ratio: 1:10), the loading volume is 2:1, rinse with deionized water for 3 column volumes, then rinse with 40% ethanol for 3 column volumes, collect 40% ethanol The washing solution was detected by thin layer chromatography, combined with the eluent containing hydroxysafflower yellow A spots, conc...
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