Method for extracting water-soluble haematochrome from lovastatin crystallization mother liquor
A technology of lovastatin and crystallization mother liquor, which is applied in the field of extracting water-soluble red pigment, can solve the problems of wasting pigment resources, etc., and achieve the effect of high color price, stable color and no obvious odor
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Embodiment 1
[0096] Take 2L of lovastatin crystallization mother liquor, concentrate in vacuum at 70-80°C, add 1L of water to concentrate to remove the organic solvent, add 2000ml of 3% NaOH solution, add water to volume 4L, stir for 2 hours for hydrolysis; adjust pH to 8.0, add 200g Perlite powder, 600ml 5% polyaluminum chloride solution, 600ml 0.1% PAM solution, stirred for 1 hour, vacuum filtered, and collected filtrate 5.5L;
[0097] Add 200g of perlite powder to the filtrate, stir and add 800ml of 6% calcium chloride solution, stir for 1 hour, filter, and collect 6L of filtrate; add 110ml of 10mol / L HCl to adjust the pH to 1.5, add 800ml of butyl acetate, stir and extract for 30 minutes , separate and collect the extract, stir and wash with 240ml 0.4mol / L HCl for 30 minutes, separate and wash the wastewater, and collect the extract; vacuum concentrate the extract at 70-80°C, add 400ml of water to continue concentrating to remove butyl acetate, and use 500ml of 1% NaOH solution was dis...
Embodiment 2
[0100] Take 2L of lovastatin crystallization mother liquor, concentrate in vacuum at 70-80°C, add 1L of water to concentrate to remove the organic solvent, add 2070ml of 3% NaOH solution, add water to volume 6L, stir and hydrolyze for 2 hours; adjust pH to 9.5, add 300g Perlite powder, 800ml 5% polyaluminum chloride solution, 800ml 0.1% PAM solution, stirred for 1 hour, vacuum filtered, and collected filtrate 5.6L;
[0101] Add 300g of perlite powder to the filtrate, stir and add 600ml of 6% calcium chloride solution, stir for 1 hour, filter, and collect 7.8L of filtrate; add 110ml of 8mol / L HCl to adjust the pH to 1.5, add 600ml of butyl acetate, stir and extract for 30 Minutes, separate and collect the extract, stir and wash with 300ml 0.4mol / L HCl for 30 minutes, separate and wash the wastewater, and collect the extract; vacuum concentrate the extract at 70-80°C, add 400ml of water and continue to concentrate to remove butyl acetate. Dissolve it with 500ml of 1% NaOH soluti...
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