CN109045308A - A kind of chitosan/carbon nanotube/hericium erinaceum polysaccharide preparation method - Google Patents
A kind of chitosan/carbon nanotube/hericium erinaceum polysaccharide preparation method Download PDFInfo
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- CN109045308A CN109045308A CN201811197924.XA CN201811197924A CN109045308A CN 109045308 A CN109045308 A CN 109045308A CN 201811197924 A CN201811197924 A CN 201811197924A CN 109045308 A CN109045308 A CN 109045308A
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- A61K47/69—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the conjugate being characterised by physical or galenical forms, e.g. emulsion, particle, inclusion complex, stent or kit
- A61K47/6921—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the conjugate being characterised by physical or galenical forms, e.g. emulsion, particle, inclusion complex, stent or kit the form being a particulate, a powder, an adsorbate, a bead or a sphere
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- A61K47/6929—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the conjugate being characterised by physical or galenical forms, e.g. emulsion, particle, inclusion complex, stent or kit the form being a particulate, a powder, an adsorbate, a bead or a sphere the form being a solid microparticle having no hollow or gas-filled cores the form being a nanoparticle, e.g. an immuno-nanoparticle
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- A61K47/56—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent the modifying agent being an organic macromolecular compound, e.g. an oligomeric, polymeric or dendrimeric molecule
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Abstract
The present invention provides a kind of chitosan/carbon nanotube/hericium erinaceum polysaccharide preparation method, and hericium erinaceum polysaccharide is loaded on chitosan-carboxylation multi-walled carbon nanotube, and the carbon nanotube after modification can reduce its toxicity, increases the application on organism.Drugloading rate and encapsulation rate are high.Cross-film ability is strong in cell, is that application of the functionalized carbon nano-tube on drug carrier material is provided fundamental basis.
Description
Technical field
The invention belongs to field of biotechnology, and in particular to a kind of chitosan/carbon nanotube/hericium erinaceum polysaccharide preparation side
Method.
Background technique
Nowadays Nano medication is a focus on research direction of biomedicine field, and it is desirable to Nano medications to keep away
The disadvantage for exempting from existing drug improves the curative effect of drug.In the past few decades, people have synthesized some nano-carriers such as lipid
Body, micella, Nano particles of silicon dioxide, carbon nanotube etc..Largely modern research shows that hericium erinaceum polysaccharide has anti-oxidant, enhancing
Immunity, anti-aging, it is hypoglycemic the effects of, but bioavailability is not high, and effective component is lost serious.This research is poly- using shell
Sugar/carbon nanotube modifies hericium erinaceum polysaccharide, because carbon nanotube has a ultra-light-weight, inner hollow space, high surface area
Structure, so that carbon nanotube can be good at entrapped drug, and its strongest ability is the cross-film ability of cell, so that carbon nanometer
Pipe can become the ideal carrier during a kind of medicament transport.Untreated carbon nanotube biological compatibility is poor, has potential
Toxicity.And chitosan possesses good biocompatibility, toxicity is lower, easily prepared.By chitosan to carbon nanotube into
Row functional modification improves the water solubility of carbon nanotube, and then using hericium erinaceum polysaccharide as model drug, discovery is received with chitosan carbon
Mitron carries hericium erinaceum polysaccharide, and discovery can enhance its drugloading rate and encapsulation rate compared with traditional polysaccharide method for making Nano, is functionalization
Application of the carbon nanotube on drug carrier material is provided fundamental basis.
The research for carrying medicine about hericium erinaceum polysaccharide at present has two: the effective elements of the medicine is in carbon nanotube in 1.
Upper research is seldom.This research uses hericium erinaceum polysaccharide, has filled up the blank on Chinese medicine.After 2. drug is loaded on carrier
Drugloading rate it is low.3. not carrying out follow-up study to it after study on the carrier success.
Summary of the invention
The purpose of the present invention is to provide a kind of chitosan/carbon nanotube/hericium erinaceum polysaccharide preparation methods.
To achieve the above object, the present invention adopts the following technical scheme:
A kind of chitosan/carbon nanotube/hericium erinaceum polysaccharide preparation method, comprising the following steps:
(1) chitosan-carboxylation multi-walled carbon nanotube preparation;
1) 0.2 g of chitosan CS is weighed, with 0.1 mol/L acetic acid constant volume, 100 mL, 30 min of ultrasound;
2) 50 mg multi-walled carbon nanotubes (MWCNTs), 30 min of ultrasound are added;
3) 40 ml 1mg/mL TPP solution, 5 h of magnetic agitation are dropped evenly;
4) 13000 rpm of mixture, 30 min is centrifugated, is cleaned 3 times with ultrapure water;
5) freeze-drying is further tested with obtaining chitosan-carboxylation multi-walled carbon nanotube (CS-MWCNTs) powder.
(2) load of hericium erinaceum polysaccharide.
1) 5 mg chitosans-carboxylation multi-walled carbon nanotube (CS-MWCNTs) is accurately weighed, is dissolved in 8 mL deionizations,
5 min of ultrasonic disperse;
2) 20 mg hericium erinaceum polysaccharides separately are weighed, is added in step (1) solution with after deionized water dissolving, ultrasonic mixing dispersion 30
min;Guarantee chitosan-carboxylation multi-walled carbon nanotube (CS-MWCNTs) is 0.5 mg/mL, and hericium erinaceum polysaccharide is 2.0 mg/mL;
3) 13000 rpm of mixture, 30 min is centrifugated, is cleaned 3 times with ultrapure water;
4) supernatant sugar concentration is surveyed, chitosan/carbon nanotube/hericium erinaceum polysaccharide (CS-MWCNTs-Hep) mixture freeze-drying is spare.
The present invention has the advantages that
1. the carbon nanotube after modification can reduce its toxicity, increase the application on organism.
2. drugloading rate and encapsulation rate are high.
3. cross-film ability is strong in cell, the application for being functionalized carbon nano-tube on drug carrier material provides theory
Basis.
Specific embodiment
Embodiment 1
A kind of chitosan/carbon nanotube/hericium erinaceum polysaccharide preparation method, comprising the following steps:
(1) chitosan-carboxylation multi-walled carbon nanotube preparation;
1) 0.2 g of CS is weighed, with 0.1 mol/L acetic acid constant volume, 100 mL, 30 min of ultrasound;
2) 50 mg MWCNTs, 30 min of ultrasound are added;
3) 40 mL, 1 mg/mL TPP solution, 5 h of magnetic agitation are dropped evenly;
4) 13000 rpm of mixture, 30 min is centrifugated, is cleaned 3 times with ultrapure water;
5) freeze-drying is further tested with obtaining CS-MWCNTs powder.
(2) load of hericium erinaceum polysaccharide:
1) 5 mg CS-MWCNTs are accurately weighed, are dissolved in 8 mL deionizations, 5 min of ultrasonic disperse;
2) 20 mg hericium erinaceum polysaccharides separately are weighed, is added in step (1) solution with after deionized water dissolving, ultrasonic mixing dispersion 30
min;Guarantee CS-MWCNTs is 0.5 mg/mL, and hericium erinaceum polysaccharide is 2.0 mg/mL;
3) 13000 rpm of mixture, 30 min is centrifugated, is cleaned 3 times with ultrapure water;
4) supernatant sugar concentration is surveyed, the freeze-drying of CS-MWCNTs-Hep mixture is spare.
CS-MWCNTs modification hericium erinaceum polysaccharide becomes larger relative to original carbon nanotubes zeta current potential, and polysaccharide solution is more steady
It is fixed.Relative to other nanometer of polysaccharide, CS-MWCNTs-Hep has drugloading rate big, the high feature of encapsulation rate, and experiment surveys it and carries medicine
Rate is 41.7 % and encapsulation rate is 98.60 %.CS-MWCNTs-Hep has proliferation function when acting on IPEC-J2 cell, simultaneously
It can reduce by H2O2Caused apoptosis;In zoopery, compared with hericium erinaceum polysaccharide, polysaccharide can be significantly increased and answered immune
The protective effect for swashing mouse, improves the immunity of mouse.
The foregoing is merely presently preferred embodiments of the present invention, all equivalent changes done according to scope of the present invention patent with
Modification, is all covered by the present invention.
Claims (3)
1. a kind of chitosan/carbon nanotube/hericium erinaceum polysaccharide preparation method, it is characterised in that: the following steps are included:
(1) chitosan-carboxylation multi-walled carbon nanotube preparation;
(2) load of hericium erinaceum polysaccharide.
2. a kind of chitosan/carbon nanotube/hericium erinaceum polysaccharide preparation method according to claim 1, it is characterised in that:
The preparation of the chitosan-carboxylation multi-walled carbon nanotube are as follows:
(1) 0.2 g of chitosan is weighed, with 0.1 mol/L acetic acid constant volume, 100 mL, 30 min of ultrasound;
(2) 50 mg multi-walled carbon nanotubes, 30 min of ultrasound are added;
(3) 40 ml 1mg/mL TPP solution, 5 h of magnetic agitation are dropped evenly;
(4) mixture is centrifugated, is cleaned 3 times with ultrapure water;
(5) freeze-drying is further tested with obtaining chitosan-carboxylation multi-wall carbon nano-tube pipe powder.
3. a kind of chitosan/carbon nanotube/hericium erinaceum polysaccharide preparation method according to claim 1, it is characterised in that:
The load step of hericium erinaceum polysaccharide are as follows:
(1) 5 mg chitosans-carboxylation multi-walled carbon nanotube is accurately weighed, is dissolved in 8 mL deionizations, 5 min of ultrasonic disperse;
(2) 20 mg hericium erinaceum polysaccharides separately are weighed, with after deionized water dissolving plus in step (1) solution, ultrasonic mixing disperses 30
min;Guarantee chitosan-carboxylation multi-walled carbon nanotube is 0.5 mg/mL, and hericium erinaceum polysaccharide is 2.0 mg/mL;
(3) mixture is centrifugated, is cleaned 3 times with ultrapure water;
(4) supernatant sugar concentration is surveyed, the freeze-drying of CS-MWCNTs-Hep mixture is spare.
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN110064058A (en) * | 2019-05-09 | 2019-07-30 | 青岛科技大学 | A kind of preparation method of aspirin/chitosan-modified carbon nanotube drug delivery system |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN110064058A (en) * | 2019-05-09 | 2019-07-30 | 青岛科技大学 | A kind of preparation method of aspirin/chitosan-modified carbon nanotube drug delivery system |
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