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A pore adsorption and resin technology, applied in the field of macroporous adsorption resin preparation, can solve the problems of poor separation effect, high organic residues, difficult pretreatment, etc., and achieve the effects of high utilization rate, strong selectivity, and reuse. Good results
Inactive Publication Date: 2017-09-15
JIANGSU STEVEN BIOTECHNOLOGY CO LTD
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Problems solved by technology
[0003] At present, the macroporous adsorption resins used for stevioside extraction in industrial production are generally AB-8 and D101 types. These commonly us
Method used
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Effect test
Embodiment 1
[0034] Install three macroporous adsorption resins (200L), marked as 1# (STW-1), 2# (AB-8), 3# (D101), rinse with high ethanol after installation, and wash with water until there is no alcohol smell, Carry out acid-base acid (4%) treatment, wash with water until neutral and set aside. Soak the high-concentration sugar water feed liquid, let the feed liquid pass through the adsorption resin for supersaturated adsorption, then wash with 2BV pure water, and measure the volume of the effluent liquid. Wash with 1BV0.5% alkali, and then wash with pure water until neutral. Use 70% ethanol for desorption, dealcoholize with a rotary evaporator after desorption, and finally decolorize, spray dry with a spray dryer after decolorization, and obtain the crude stevioside. The data of 1#, 2# and 3# are shown in the table below:
[0035]
Embodiment 2
[0037] The 1# (STW-1), 2# (AB-8), 3# (D101) adsorption resins (200L) after repeated use are not treated, and are directly supersaturated with high-concentration sugar water for adsorption, and then 2BV of pure water Wash with water and measure the volume of the effluent. Wash with 1BV0.5% alkali, and then wash with pure water until neutral. Use 70% ethanol for desorption, dealcoholize with a rotary evaporator after desorption, and finally decolorize, spray dry with a spray dryer after decolorization, and obtain the crude stevioside. The data of 1#, 2# and 3# are shown in the table below:
[0038]
Embodiment 3
[0040] The 1# (STW-1), 2# (AB-8), 3# (D101) adsorption resins (200L) after repeated use are not treated, and are directly supersaturated with high-concentration sugar water for adsorption, and then 2BV of pure water Wash with water and measure the volume of the effluent. Wash with 1BV0.5% alkali, then wash with pure water until neutral. Use 70% ethanol for desorption, dealcoholize with a rotary evaporator after desorption, and finally decolorize, spray dry with a spray dryer after decolorization, and obtain the crude stevioside. The data of 1#, 2#, 3#1#, 2#, 3# are shown in the table below:
[0041]
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Abstract
The invention relates to a macroporous adsorption resin preparation method, which comprises: preparing a monomer: pouring divinylbenzene, methyl acrylate and dibenzoyl peroxide into a reaction kettle according to a formula, carrying out room temperature stirring for 25-30 min, pouring a pore forming agent cyclohexane, and carrying out room temperature stirring for 25-30 min; preparing a water phase: adding a proper amount of water to the reaction kettle, pouring a powder salt, and stirring to make the salt water achieve a uniform state; pouring gelatin and methylene blue, stirring while heating to a temperature of 55-60 DEG C, and turning off the stirring in advance; sucking the prepared monomer into the reaction kettle, and carrying out heating-free empty stirring for 10-15 min, wherein the temperature of the water phase at the beginning is 55-60 DEG C, and the temperature in the reaction kettle is about 40-45 DEG C after the monomer is poured; slowly heating to a temperature of 68-70 DEG C after the empty stirring is performed for 10-15 min; and carrying out thermal insulation for 4-5 h, carrying out steam heating to slowly increase the temperature to 70-75 DEG C, and carrying out thermal insulation for 6-7 h, wherein the stirring is not turned off during the operation.
Description
Background technique [0001] Macroporous adsorption resin is a kind of polymer adsorption resin without exchange groups and has a macroporous structure. It has a good macroporous network structure and a large specific surface area. It can selectively physically adsorb organic substances in aqueous solutions. It is a new type of organic polymer adsorbent developed in the 1960s. [0002] Macroporous adsorption resin adsorption technology was first used in wastewater treatment, pharmaceutical industry, chemical industry, analytical chemistry, clinical testing and treatment, etc. In recent years, it has been widely used in the extraction, separation and purification of active ingredients of Chinese herbal medicine in my country. Compared with the traditional process of traditional Chinese medicine preparations, the extract obtained by applying macroporous adsorption resin technology is small in size, does not absorb moisture, and is easy to make various dosage forms with beautiful ...
Claims
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Application Information
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