Preparation method of high purity sulforaphene
A kind of rapin, high-purity technology, applied in the field of preparation of high-purity rapin, to achieve the effect of saving cost, improving stability and high purification efficiency
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Embodiment 1
[0025] A kind of preparation method of high-purity radashin, concrete method step is as follows:
[0026] (1) Preparation of radish concentrate
[0027] Taking radish seed meal as raw material, according to the mass (kg) of radish seed meal: the volume fraction is 50~80% ethanol solution volume (L) ratio is the ratio of 1: 6, first stirred and reacted at room temperature for 4h, and then used The citric acid solution with a mass fraction of 2% was adjusted to pH 2, and then pumped into a clarified tubular centrifuge, centrifuged at a speed of 15000 r / min, and the supernatant and sediment were collected respectively. For the centrifugal supernatant that collects, pump into the reverse osmosis concentrator, under 0.15MPa, carry out the reverse osmosis concentration for the first time, until the volume of the first reverse osmosis retentate is reduced to 10% of the original volume, collect the second Primary reverse osmosis permeate and primary reverse osmosis retentate. In the f...
Embodiment 2
[0036] A kind of preparation method of high-purity radashin, concrete method step is as follows:
[0037] (1) Preparation of radish concentrate
[0038] Taking radish seed meal as raw material, according to the mass (kg) of radish seed meal: volume fraction is the ratio of the volume (L) of 65% ethanol solution to be the ratio of 1:7, stir and react at room temperature for 5h first, then use mass fraction The pH of the 4% citric acid solution was adjusted to 2.5, centrifuged at a rotational speed of 18000 r / min, and the supernatant and sediment were collected respectively. For the centrifugal supernatant that collects, pump in the reverse osmosis concentrator, under 0.20MPa, carry out reverse osmosis concentration for the first time, until the volume of reverse osmosis retentate for the first time is reduced to 12% of original volume, collect respectively Primary reverse osmosis permeate and primary reverse osmosis retentate. In the first reverse osmosis retentate collected,...
Embodiment 3
[0047] A kind of preparation method of high-purity radashin, concrete method step is as follows:
[0048] (1) Preparation of radish concentrate
[0049] Taking radish seed meal as raw material, according to the mass (kg) of radish seed meal: volume fraction is the ratio of the volume (L) of 80% ethanol solution to be the ratio of 1:9, stir and react at room temperature for 7h first, and then use mass fraction The pH of the 6% citric acid solution was adjusted to 3, centrifuged at a speed of 20000 r / min, and the supernatant and sediment were collected respectively. For the centrifugal supernatant that collects, pump in the reverse osmosis concentrator, under 0.25MPa, carry out reverse osmosis concentration for the first time, until the volume of the reverse osmosis retentate for the first time is reduced to 15% of original volume, collect respectively Primary reverse osmosis permeate and primary reverse osmosis retentate. In the first reverse osmosis retentate collected, add ...
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