Extractive of total benzofuran of benzoin plants, prepn. method and use thereof
A plant extract, benzofuran technology, applied in the direction of plant raw materials, plant/algae/fungi/moss components, sugar derivatives, etc.
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Embodiment 1
[0057] Example 1 Preparation of Washan Benzoin Extract 1
[0058] Wash 1000 g of dried benzoin seeds, crush it, add 8 L of 80% ethanol solution, heat and reflux for extraction for 1.5 hours, add 6 L of 80% ethanol solution to the filter residue, heat and reflux for 1 hour, and filter. The two filtrates were combined and concentrated under reduced pressure to obtain 248 g of total extract. Dissolve the total extract with 2L of hot water; take 2.5kg of D101 macroporous resin and pack it into a column, absorb the extract dissolved in hot water with macroporous resin, elute with 20L of water, discard the eluent, and then use 95% The column was eluted with ethanol, and the eluate was concentrated under reduced pressure to obtain an extract, which was then vacuum or freeze-dried to obtain 226 g of dry powder, which was analyzed by HPLC and determined to have a total benzofuran content of about 40% of the total weight.
Embodiment 2
[0059] Example 2 Preparation of Washan Benzoin Extract 2
[0060] Wash 1000 g of dried benzoin seeds, crush them, add 8 L of 80% ethanol solution, heat and reflux for extraction for 1.5 hours, add 6 L of 75% ethanol solution to the filter residue, heat and reflux for 1 hour, and filter. The two filtrates were combined and concentrated under reduced pressure to obtain 250 g of total extract. After dissolving the total extract with 2L hot water, extract 5 times with 3L industrial petroleum ether. Take 2 kg of D101 macroporous resin and pack it into a column. After the water layer is absorbed by the macroporous resin, it is eluted with 15 L of water. The eluent is discarded, and then the column is eluted with 75% ethanol. The eluent is concentrated under reduced pressure to obtain an extract , and then vacuum or freeze-dried to obtain 106 g of dry powder, which was analyzed by HPLC and determined to have a total benzofuran content of 90% of the total weight.
Embodiment 3
[0061] Example 3 Preparation of Luchun Benzoin Extract
[0062] Luchun benzoin dried seeds 1000g, crushed, add 8L of 80% ethanol solution, extract by heating and reflux for 1.5 hours, add 6L of 50% ethanol solution to the filter residue, extract by heating and reflux for 1 hour, and filter. The two filtrates were combined and concentrated under reduced pressure to obtain 203 g of total extract. Dissolve the total extract with 2L of hot water; take 2.5kg of D101 macroporous resin and pack it into a column, absorb the extract dissolved in hot water with macroporous resin, elute with 20L of water, discard the eluent, and then use 20% The column was eluted with ethanol, and the eluate was concentrated under reduced pressure to obtain an extract, which was then vacuum or freeze-dried to obtain 196 g of dry powder, which was analyzed by HPLC and determined to have a total benzofuran content of about 45% of the total weight.
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