Process for extracting alpha-crocin from fructus gardeniae
A technology of crocin and gardenia, applied in the field of high color value α-crocin, can solve the problems of poor safety and unsuitability for industrial production, achieve low production cost, realize industrial production, and reduce workload
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Embodiment 1
[0021] Grind jasmine jasmine to 40 mesh, put 20kg into the extraction tank, add 30L No. 4 solvent, soak and heat to 40°C and stir for 1 hour, filter the degreasing liquid, add 30L of 50°C hot water to the degreasing raw material, adjust the pH to 4.8, add 200g of starch After enzymatic hydrolysis for 1 hour, quickly raise the temperature to 90°C and keep the temperature for half an hour, add water to 100L, adjust the pH to 7, heat and reflux for extraction for 3 hours, extract twice, filter while hot, combine the filtrate, add 7kg polyamide resin and stir for 0.5 hour, Filter to obtain 170L extract. Take HPD100 macroporous resin for column packing, pretreatment, then load the extract at a flow rate of 2BV / h, first elute with 4 times the column volume of deionized water, discard the eluent, and then successively use 6 times the column volume of 20% Elute with ethanol and 5 times column volume of 50% ethanol, detect by TLC, collect α-crocin eluate, recover ethanol by vacuum dist...
Embodiment 2
[0023] Crush jasmine jasmine to 50 mesh, put 20kg into the extraction tank, add 20L No. 4 solvent, soak and heat to 45°C and stir for 1.5 hours, filter the degreasing liquid, add 40L 50°C hot water to the degreasing raw material, adjust pH to 4.5, add 300g protease After 1 hour of enzymatic hydrolysis, quickly raise the temperature to 95°C and keep the temperature for half an hour, add water to 160L, adjust the pH to 7, heat and reflux for extraction for 2.5 hours, extract twice, filter while hot, combine the filtrates, add 7kg polyamide resin and stir for 0.5 hours, filter , to obtain 290L extract. Take HPD300 macroporous resin for column packing, pretreatment, then load the extract liquid at a flow rate of 1.5BV / h, first elute with 6 times the column volume of deionized water, discard the eluent, and then successively use 7 times the column volume Elute with 30% ethanol and 4 times column volume of 60% ethanol, detect by TLC, collect α-crocin eluate, recover ethanol by vacuu...
Embodiment 3
[0025] Grind the water gardenia to 50 mesh, put 20kg into the extraction tank, add 30L No.4 solvent, soak and heat to 45°C and stir for 1 hour, filter the degreasing liquid, add 36L of 50°C hot water to the degreasing raw material, adjust the pH to 4.8, and add 300g protease After 1 hour of enzymatic hydrolysis, quickly raise the temperature to 95°C and keep the temperature for half an hour, add water to 140L, adjust the pH to 7, heat and reflux for extraction for 3 hours, extract 3 times, filter while hot, combine the filtrate, add 7kg of polyamide resin and stir for 0.5 hours, filter , to obtain 380L extract. Take HPD100 macroporous resin for column packing, pretreatment, then load the extract at a flow rate of 1.5BV / h, first elute with 5 times column volume deionized water, discard the eluent, and then sequentially use 8 times column volume 20 % ethanol and 6 times of column volume 45% ethanol for elution, TLC detection, collect α-crocin eluate, recover ethanol by vacuum di...
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