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A kind of polymer carrier and its preparation method and its method of separating and purifying tea saponin

A separation and purification, polymer technology, applied in the field of separation and purification, can solve the problems of complicated procedures, long time, low efficiency, etc., and achieve the effect of simplifying the preparation process, realizing adsorption and desorption, and efficient adsorption

Active Publication Date: 2021-08-10
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems of complex procedures, low efficiency, high cost, long time and potential safety hazards in the existing high-purity tea saponin separation and purification process

Method used

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  • A kind of polymer carrier and its preparation method and its method of separating and purifying tea saponin
  • A kind of polymer carrier and its preparation method and its method of separating and purifying tea saponin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1: the preparation of polymer carrier

[0034] Dissolve 0.5 mol of DEAEM and 100 mL of EGDMA in 500 mL of acetonitrile, oscillate and mix evenly, and after standing in the dark for 10 minutes, add 3.77 g of initiator azobisisobutyronitrile, and oscillate evenly. Then, the mixed solution was ultrasonically degassed for 30 minutes, and then nitrogen gas was continuously passed in for 30 minutes. After vacuum sealing, it was placed in a water bath at 60° C. for 24 hours.

[0035] The obtained massive polymer was ground, pulverized, and sieved to obtain particles with a size of 100 mesh and 80 mesh. The above particles were wrapped with filter paper, placed in a Soxhlet extractor, and 80% methanol prepared in advance was added: 20 % acetic acid (v / v) extract, extract at 90°C for 24 hours to remove the porogen acetonitrile; then use 100% methanol to continue the extraction for 2 hours to remove acetic acid. The obtained polymer particles were dried under reduced ...

Embodiment 2

[0037] Embodiment 2: the preparation of polymer carrier

[0038] Shake and mix 1mol of DEAEM, 200mL of EGDMA and 1000mL of DMSO evenly. After standing in the dark for 10 minutes, add 7.54g of initiator azobisisobutyronitrile. After shaking evenly, ultrasonic degassing for 30 minutes, followed by nitrogen gas for 30 minutes , vacuum-sealed and placed in a 70°C water bath for 24 hours.

[0039] The block polymer obtained is ground, pulverized, sieved to obtain 100 mesh and 80 mesh size particles, the above particles are wrapped with filter paper, placed in a Soxhlet extractor, add 80% methanol: 20% acetic acid (v / v) extract at 90°C for 36h to remove the porogen DMSO, then use 100% methanol to continue the extraction for 3h, and finally dry the obtained polymer particles at 60°C under reduced pressure for 24h, Polymer carrier particles are obtained.

[0040] The obtained polymer carrier particles were scanned by scanning electron microscope; the obtained particles were measure...

Embodiment 3

[0041] Embodiment 3: the preparation of polymer carrier

[0042] Shake and mix 1mol of DEAEM, 200mL of EGDMA and 5000mL of DMSO evenly, add 7.54g of initiator azobisisobutyronitrile, shake evenly, degas with ultrasonic for 30min, then continue to pass in nitrogen for 30min, vacuum seal and place in water bath In a shaker, shake at 150r / min at 60°C for 24h.

[0043] The obtained granular precipitate was wrapped with filter paper, placed in a Soxhlet extractor, added with 80% methanol: 20% acetic acid (v / v) extract, and extracted at 90°C for 36h to remove the porogen DMSO, Then 100% methanol was used to continue the extraction for 3 hours, and finally the obtained polymer particles were dried under reduced pressure at 60° C. for 24 hours to obtain polymer carrier particles.

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Abstract

The invention discloses a polymer carrier, a preparation method thereof and a method for separating and purifying tea saponin. The present invention utilizes the principle that high-concentration tea saponin can spontaneously aggregate and disintegrate in a specific solution, uses suitable functional monomers, cross-linking agents, and porogens as raw materials, through molecular self-assembly, inter-molecular and / intra-molecular The polymer carrier is prepared by copolymerization reaction, and then the unique properties of the carrier after removing the porogen are used to realize efficient adsorption and reversible cycle adsorption of tea saponin, to prepare high-purity target substances, and to realize the recycling of the carrier at the same time. The polymer carrier of the present invention has a large adsorption target substance loading capacity, which can reach 600-750 mg / g (target substance / dry basis carrier).

Description

technical field [0001] The invention relates to a polymer carrier and a preparation method thereof and a method for separating and purifying tea saponin, belonging to the technical field of separation and purification. Background technique [0002] Tea saponin, also known as tea saponin (C 57 h 90 o 26 ), is the general term for pentacyclic triterpenoid saponins in Theaceae plants, widely present in various organs and tissues of Theaceae plants, with higher content in fruits and leaves. Tea saponin is a natural surfactant with good performance, which can be widely used in light industry, chemical industry, pesticide, feed, breeding, textile, oil extraction, mining, building materials and highway construction and other fields. The extraction methods of tea saponin in industry mainly include hot water or alcohol-containing hot water extraction, ultrasonic-assisted extraction, microwave-assisted extraction, enzymatic extraction, etc.; purification methods include ultrafiltra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F222/14C08F220/34C08J9/26B01D36/00C07J63/00
CPCB01D36/00C07J63/008C08F222/1006C08J9/26
Inventor 杨瑞金陈琪琪汪明明
Owner JIANGNAN UNIV
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