CN112830979A - 一种改性黄原胶及其制备方法与应用 - Google Patents
一种改性黄原胶及其制备方法与应用 Download PDFInfo
- Publication number
- CN112830979A CN112830979A CN202110058359.4A CN202110058359A CN112830979A CN 112830979 A CN112830979 A CN 112830979A CN 202110058359 A CN202110058359 A CN 202110058359A CN 112830979 A CN112830979 A CN 112830979A
- Authority
- CN
- China
- Prior art keywords
- xanthan gum
- solution
- reaction
- modified
- aldehyde
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229920001285 xanthan gum Polymers 0.000 title claims abstract description 117
- 239000000230 xanthan gum Substances 0.000 title claims abstract description 114
- 235000010493 xanthan gum Nutrition 0.000 title claims abstract description 114
- 229940082509 xanthan gum Drugs 0.000 title claims abstract description 114
- GJCOSYZMQJWQCA-UHFFFAOYSA-N 9H-xanthene Chemical class C1=CC=C2CC3=CC=CC=C3OC2=C1 GJCOSYZMQJWQCA-UHFFFAOYSA-N 0.000 title claims abstract description 59
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 238000006243 chemical reaction Methods 0.000 claims abstract description 29
- JQWHASGSAFIOCM-UHFFFAOYSA-M sodium periodate Chemical compound [Na+].[O-]I(=O)(=O)=O JQWHASGSAFIOCM-UHFFFAOYSA-M 0.000 claims abstract description 18
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 claims abstract description 16
- 150000003973 alkyl amines Chemical class 0.000 claims abstract description 14
- 239000003814 drug Substances 0.000 claims abstract description 14
- 229940079593 drug Drugs 0.000 claims abstract description 8
- 239000003937 drug carrier Substances 0.000 claims abstract description 8
- GYZLOYUZLJXAJU-UHFFFAOYSA-N diglycidyl ether Chemical compound C1OC1COCC1CO1 GYZLOYUZLJXAJU-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910000033 sodium borohydride Inorganic materials 0.000 claims abstract description 6
- 239000012279 sodium borohydride Substances 0.000 claims abstract description 6
- 239000000243 solution Substances 0.000 claims description 48
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 15
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical group [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 11
- 239000008367 deionised water Substances 0.000 claims description 10
- 229910021641 deionized water Inorganic materials 0.000 claims description 10
- HEFNNWSXXWATRW-UHFFFAOYSA-N Ibuprofen Chemical compound CC(C)CC1=CC=C(C(C)C(O)=O)C=C1 HEFNNWSXXWATRW-UHFFFAOYSA-N 0.000 claims description 8
- JRBPAEWTRLWTQC-UHFFFAOYSA-N dodecylamine Chemical compound CCCCCCCCCCCCN JRBPAEWTRLWTQC-UHFFFAOYSA-N 0.000 claims description 8
- 229960001680 ibuprofen Drugs 0.000 claims description 8
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 7
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 6
- 239000003513 alkali Substances 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims description 6
- 230000001376 precipitating effect Effects 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 5
- 239000007864 aqueous solution Substances 0.000 claims description 4
- 239000003960 organic solvent Substances 0.000 claims description 4
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 claims description 3
- LSQZJLSUYDQPKJ-NJBDSQKTSA-N amoxicillin Chemical compound C1([C@@H](N)C(=O)N[C@H]2[C@H]3SC([C@@H](N3C2=O)C(O)=O)(C)C)=CC=C(O)C=C1 LSQZJLSUYDQPKJ-NJBDSQKTSA-N 0.000 claims description 3
- 229960003022 amoxicillin Drugs 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 235000019253 formic acid Nutrition 0.000 claims description 3
- 239000005457 ice water Substances 0.000 claims description 3
- LSQZJLSUYDQPKJ-UHFFFAOYSA-N p-Hydroxyampicillin Natural products O=C1N2C(C(O)=O)C(C)(C)SC2C1NC(=O)C(N)C1=CC=C(O)C=C1 LSQZJLSUYDQPKJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000003208 petroleum Substances 0.000 claims description 3
- WJYIASZWHGOTOU-UHFFFAOYSA-N Heptylamine Chemical compound CCCCCCCN WJYIASZWHGOTOU-UHFFFAOYSA-N 0.000 claims description 2
- 235000019441 ethanol Nutrition 0.000 claims description 2
- FJDUDHYHRVPMJZ-UHFFFAOYSA-N nonan-1-amine Chemical compound CCCCCCCCCN FJDUDHYHRVPMJZ-UHFFFAOYSA-N 0.000 claims description 2
- IOQPZZOEVPZRBK-UHFFFAOYSA-N octan-1-amine Chemical compound CCCCCCCCN IOQPZZOEVPZRBK-UHFFFAOYSA-N 0.000 claims description 2
- 238000001556 precipitation Methods 0.000 claims description 2
- 230000035484 reaction time Effects 0.000 claims description 2
- QFKMMXYLAPZKIB-UHFFFAOYSA-N undecan-1-amine Chemical compound CCCCCCCCCCCN QFKMMXYLAPZKIB-UHFFFAOYSA-N 0.000 claims description 2
- 238000001291 vacuum drying Methods 0.000 claims description 2
- 238000005406 washing Methods 0.000 claims description 2
- 230000002209 hydrophobic effect Effects 0.000 abstract description 12
- 230000004048 modification Effects 0.000 abstract description 12
- 238000012986 modification Methods 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 10
- 239000000376 reactant Substances 0.000 abstract description 2
- 239000000047 product Substances 0.000 description 13
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 230000001186 cumulative effect Effects 0.000 description 4
- 238000004108 freeze drying Methods 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 238000013268 sustained release Methods 0.000 description 4
- 239000012730 sustained-release form Substances 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000003431 cross linking reagent Substances 0.000 description 3
- 238000002329 infrared spectrum Methods 0.000 description 3
- SHKUUQIDMUMQQK-UHFFFAOYSA-N 2-[4-(oxiran-2-ylmethoxy)butoxymethyl]oxirane Chemical group C1OC1COCCCCOCC1CO1 SHKUUQIDMUMQQK-UHFFFAOYSA-N 0.000 description 2
- 241000589649 Xanthomonas campestris pv. campestris Species 0.000 description 2
- 238000002835 absorbance Methods 0.000 description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 2
- 238000012512 characterization method Methods 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000008055 phosphate buffer solution Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- LUEWUZLMQUOBSB-FSKGGBMCSA-N (2s,3s,4s,5s,6r)-2-[(2r,3s,4r,5r,6s)-6-[(2r,3s,4r,5s,6s)-4,5-dihydroxy-2-(hydroxymethyl)-6-[(2r,4r,5s,6r)-4,5,6-trihydroxy-2-(hydroxymethyl)oxan-3-yl]oxyoxan-3-yl]oxy-4,5-dihydroxy-2-(hydroxymethyl)oxan-3-yl]oxy-6-(hydroxymethyl)oxane-3,4,5-triol Chemical compound O[C@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@H]1O[C@@H]1[C@@H](CO)O[C@@H](O[C@@H]2[C@H](O[C@@H](OC3[C@H](O[C@@H](O)[C@@H](O)[C@H]3O)CO)[C@@H](O)[C@H]2O)CO)[C@H](O)[C@H]1O LUEWUZLMQUOBSB-FSKGGBMCSA-N 0.000 description 1
- CLWAXFZCVYJLLM-UHFFFAOYSA-N 1-chlorohexadecane Chemical compound CCCCCCCCCCCCCCCCCl CLWAXFZCVYJLLM-UHFFFAOYSA-N 0.000 description 1
- AOBIOSPNXBMOAT-UHFFFAOYSA-N 2-[2-(oxiran-2-ylmethoxy)ethoxymethyl]oxirane Chemical compound C1OC1COCCOCC1CO1 AOBIOSPNXBMOAT-UHFFFAOYSA-N 0.000 description 1
- 244000247812 Amorphophallus rivieri Species 0.000 description 1
- 235000001206 Amorphophallus rivieri Nutrition 0.000 description 1
- 239000001884 Cassia gum Substances 0.000 description 1
- 229920002261 Corn starch Polymers 0.000 description 1
- 229920002581 Glucomannan Polymers 0.000 description 1
- 229920002907 Guar gum Polymers 0.000 description 1
- 238000004566 IR spectroscopy Methods 0.000 description 1
- 229920002752 Konjac Polymers 0.000 description 1
- 229920000161 Locust bean gum Polymers 0.000 description 1
- LGRFSURHDFAFJT-UHFFFAOYSA-N Phthalic anhydride Natural products C1=CC=C2C(=O)OC(=O)C2=C1 LGRFSURHDFAFJT-UHFFFAOYSA-N 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- LCTONWCANYUPML-UHFFFAOYSA-N Pyruvic acid Chemical group CC(=O)C(O)=O LCTONWCANYUPML-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 125000002777 acetyl group Chemical group [H]C([H])([H])C(*)=O 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- JHIWVOJDXOSYLW-UHFFFAOYSA-N butyl 2,2-difluorocyclopropane-1-carboxylate Chemical compound CCCCOC(=O)C1CC1(F)F JHIWVOJDXOSYLW-UHFFFAOYSA-N 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 235000019318 cassia gum Nutrition 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000013270 controlled release Methods 0.000 description 1
- 239000008120 corn starch Substances 0.000 description 1
- 238000000921 elemental analysis Methods 0.000 description 1
- 238000005886 esterification reaction Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 230000002496 gastric effect Effects 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 229940046240 glucomannan Drugs 0.000 description 1
- 150000004676 glycans Chemical class 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000010559 graft polymerization reaction Methods 0.000 description 1
- 239000000665 guar gum Substances 0.000 description 1
- 235000010417 guar gum Nutrition 0.000 description 1
- 229960002154 guar gum Drugs 0.000 description 1
- 238000007037 hydroformylation reaction Methods 0.000 description 1
- 125000001165 hydrophobic group Chemical group 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000252 konjac Substances 0.000 description 1
- 235000010485 konjac Nutrition 0.000 description 1
- 150000002632 lipids Chemical class 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000000711 locust bean gum Substances 0.000 description 1
- 235000010420 locust bean gum Nutrition 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000003094 microcapsule Substances 0.000 description 1
- 238000002715 modification method Methods 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- -1 n-dodecyl groups Chemical group 0.000 description 1
- 229920005615 natural polymer Polymers 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 229940126701 oral medication Drugs 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920001282 polysaccharide Polymers 0.000 description 1
- 239000005017 polysaccharide Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 238000007142 ring opening reaction Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000001878 scanning electron micrograph Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000012798 spherical particle Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000001308 synthesis method Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 239000000213 tara gum Substances 0.000 description 1
- 235000010491 tara gum Nutrition 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B37/00—Preparation of polysaccharides not provided for in groups C08B1/00 - C08B35/00; Derivatives thereof
- C08B37/0006—Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid
- C08B37/0024—Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid beta-D-Glucans; (beta-1,3)-D-Glucans, e.g. paramylon, coriolan, sclerotan, pachyman, callose, scleroglucan, schizophyllan, laminaran, lentinan or curdlan; (beta-1,6)-D-Glucans, e.g. pustulan; (beta-1,4)-D-Glucans; (beta-1,3)(beta-1,4)-D-Glucans, e.g. lichenan; Derivatives thereof
- C08B37/0033—Xanthan, i.e. D-glucose, D-mannose and D-glucuronic acid units, saubstituted with acetate and pyruvate, with a main chain of (beta-1,4)-D-glucose units; Derivatives thereof
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/185—Acids; Anhydrides, halides or salts thereof, e.g. sulfur acids, imidic, hydrazonic or hydroximic acids
- A61K31/19—Carboxylic acids, e.g. valproic acid
- A61K31/192—Carboxylic acids, e.g. valproic acid having aromatic groups, e.g. sulindac, 2-aryl-propionic acids, ethacrynic acid
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/41—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having five-membered rings with two or more ring hetero atoms, at least one of which being nitrogen, e.g. tetrazole
- A61K31/425—Thiazoles
- A61K31/429—Thiazoles condensed with heterocyclic ring systems
- A61K31/43—Compounds containing 4-thia-1-azabicyclo [3.2.0] heptane ring systems, i.e. compounds containing a ring system of the formula, e.g. penicillins, penems
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K47/00—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
- A61K47/30—Macromolecular organic or inorganic compounds, e.g. inorganic polyphosphates
- A61K47/36—Polysaccharides; Derivatives thereof, e.g. gums, starch, alginate, dextrin, hyaluronic acid, chitosan, inulin, agar or pectin
Landscapes
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Medicinal Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- Pharmacology & Pharmacy (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- Animal Behavior & Ethology (AREA)
- Epidemiology (AREA)
- Materials Engineering (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Emergency Medicine (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Molecular Biology (AREA)
- Biochemistry (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
本发明涉及一种改性黄原胶及其制备方法与应用。本发明的改性黄原胶是将黄原胶先与缩水甘油醚反应得到羟基化黄原胶溶液,再在羟基化黄原胶溶液中加入高碘酸钠溶液进行避光反应制成醛基化黄原胶,最后将该醛基化黄原胶依次与烷基胺、硼氢化钠反应得到。本发明的改性黄原胶制备方法简单安全,克服了以往黄原胶疏水改性时,反应物互不混溶,反应困难的问题。此外,本发明的改性黄原胶对于疏水性药物的缓释效果明显,且随着改性产物中疏水性组分的增加,缓释效果加强,可作为药物载体使用。
Description
技术领域
本发明涉及一种改性黄原胶及其制备方法与应用,属于黄原胶改性技术领域。
背景技术
黄原胶也称做为汉生胶,是一种可溶性生物多糖,黄原胶是以玉米淀粉为主要原料,由甘蓝黑腐黄单胞菌或野油菜黄单胞菌发酵而成的一种酸性胞外杂多糖。由于其独特的分子结构,而具有独特的流变性、良好的水溶性、对热酸碱的稳定性、与各种盐类的相溶性等许多优异的理化性能,在许多领域有广泛应用。在医用领域,黄原胶主要作为粘合剂、崩解剂、缓释剂和控释剂,是微胶囊药物囊材中的组分,可以控制药物释放。黄原胶可延长食物胃滞留时间以降低血脂,因而被大量应用于口服药物载体和生物支架凝胶。
为了达到实际应用的要求,黄原胶在应用之前往往需要改性,通常黄原胶的改性方法有疏水改性、接枝聚合、酯化反应、直接交联法、自由基交联聚合法等,黄原胶还可以与多种天然高聚物例如塔拉胶、刺槐豆胶、肉桂胶和瓜尔豆胶、魔芋葡甘露聚糖等复合改性,获得所需要的理化性质,扩大应用领域。
黄原胶亲水性较强,与疏水性分子的相互作用力较弱,因而作为疏水性药物载体时,缓释效果不明显。黄原胶疏水改性虽然已经有一些报道,例如黄原胶与氯代十六烷与反应,或者黄原胶与邻苯二甲酸酐的开环反应,使其连结部分疏水性基团,但是上述方法往往反应困难,改性效果不佳,对于疏水性药物的缓释效果不明显。
发明内容
本发明的第一个目的在于提供一种改性黄原胶的制备方法。
本发明的第二个目的在于提供一种由上述制备方法制得的改性黄原胶。
本发明的第三个目的在于提供一种上述改性黄原胶作为药物载体的应用。
为了实现上述目的,本发明采用的技术方案如下:
为了克服上述问题,本发明提供一种改性黄原胶的制备及其用作药物载体的方法,首先本发明的第一个方面提供了一种改性黄原胶的制备方法,包括如下步骤:
步骤1,将黄原胶溶解在去离子水中配制成黄原胶溶液,用碱液调节pH至9~10,在搅拌状态下滴加缩水甘油醚,经升温反应后,用有机溶剂清洗得到羟基化黄原胶溶液;
步骤2,在步骤1所制得的羟基化黄原胶溶液中添加高碘酸钠溶液,经低温避光反应后,加入乙二醇终止反应,用过量无水乙醇沉淀出产物,将产物反复溶解、沉淀后,经干燥得到醛基化黄原胶;
步骤3,将步骤2所制得的醛基化黄原胶用去离子水配制成醛基化黄原胶溶液,同时,将烷基胺溶于无水乙醇中配制成烷基胺溶液,并将烷基胺溶液加到上述醛基化黄原胶溶液中,用酸溶液调节pH至5~6,经控温反应后,在冰水浴中边搅拌边加硼氢化钠继续反应至结束,经沉淀、静置、过滤、冷冻干燥,得到所述改性黄原胶。
进一步地,在步骤1中,所述黄原胶溶液的浓度为1.2~2.0wt%;所述缩水甘油醚的重量占黄原胶重量的60~85%。
进一步地,在步骤1中,所述碱液为氢氧化钠溶液,浓度为1~1.5wt%;所述有机溶剂为石油醚、甲醇或乙醇中的一种。
进一步地,在步骤1中,所述升温反应的条件为:升温至50~55℃反应4~5h。
进一步地,在步骤2中,所述高碘酸钠溶液的浓度为0.30~0.40mol/L,添加量为黄原胶溶液体积的18~32%;所述乙二醇的添加量为高碘酸钠溶液体积的20%。
进一步地,在步骤2中,所述低温避光反应的条件为:于4℃下避光反应12~24h;所述干燥的条件为:于45℃真空干燥48h。
进一步地,在步骤3中,所述醛基化黄原胶溶液的浓度为1.0~1.2wt%。
进一步地,在步骤3中,所述烷基胺选自正辛胺、正壬胺、正庚胺、正十一胺或正十二胺中的一种,烷基胺的用量是黄原胶重量的1~1.7倍;所述硼氢化钠的添加量为烷基胺重量的40%。
进一步地,在步骤3中,所述酸溶液为甲酸溶液,浓度为1~2wt%。
进一步地,在步骤3中,所述控温反应的条件为:控制温度35℃反应2h;所述继续反应的时间为12h;所述静置的条件为:于4℃静置8~12h。
本发明的第二个方面提供了一种由上述制备方法制得的改性黄原胶,所述改性黄原胶具有两亲性结构,可在水溶液中形成胶体粒子。
本发明的第三个方面提供了一种上述改性黄原胶作为药物载体的应用,具体应用方法为:
将上述改性黄原胶溶于去离子水中,用碱液调节pH至8~9,添加药物并搅拌均匀,再添加交联剂继续搅拌至完全混合均匀,然后转移至容器中,置于恒温水浴中,得到负载药物的改性黄原胶,取出后切成薄片,经冷冻干燥后置于pH为6.8的磷酸盐缓冲液中释放,在265nm处检测吸光度,并计算累积释放量。
进一步地,所述药物为阿莫西林或布洛芬,用量为改性黄原胶的60~85wt%;所述交联剂为1,4-丁二醇双缩水甘油醚或聚乙二醇双缩水甘油醚,用量为改性黄原胶的8~12wt%。
进一步地,所述恒温水浴的反应条件为:维持40~45℃反应8~10h;所述薄片的厚度为1~1.5cm。
由于采取以上技术方案,本发明相较于现有技术的优势和有益效果在于:
1、改性后黄原胶对于疏水性药物的缓释效果明显,且随着改性产物中疏水性组分的增加,缓释效果加强;
2、合成方法中,通过黄原胶与缩水甘油醚反应,再醛基化以后,与烷基胺反应容易,克服了以往黄原胶疏水改性时,反应物互不混溶,反应困难的问题;
3、黄原胶及其所用材料安全无毒,因此本发明的改性黄原胶及其制备方法具有安全性,从而可用作药物载体。
附图说明
图1为本发明的一种改性黄原胶的制备方法的合成路线示意图;
图2为本发明实施例1~4所制得的改性黄原胶的傅立叶红外光谱图;
图3为本发明实施例1的改性黄原胶胶体粒子的扫描电镜图;
图4为本发明实施例5中改性前后的黄原胶样品对于布洛芬的累积释放曲线图。
具体实施方式
为了使本发明的目的、技术方案及优点更加清楚明白,以下结合实施例与附图对本发明进行具体描述。
实施例1~4
本发明实施例1~4所用的主要原料及其用量如下表1所示:
表1
如图1所示为本发明的一种改性黄原胶的制备方法的合成路线示意图,本发明实施例1~4的改性黄原胶的制备方法,包括如下步骤:
按表1所示配比,在250mL三颈反应烧瓶中将黄原胶溶解在100mL去离子水中,在室温下缓慢搅拌6h使黄原胶充分溶解,得到黄原胶溶液,用1wt%NaOH溶液调节pH在9~10范围内,然后在搅拌状态下向此三颈反应烧瓶中滴加缩水甘油醚,升温至50℃反应4h,用石油醚清洗产物,得到羟基化黄原胶溶液;
在上述制得的羟基化黄原胶溶液中添加浓度为0.35mol/L的高碘酸钠水溶液,4℃下避光反应24h,加入乙二醇终止反应,用无水乙醇沉淀产物,将产物再次用去离子水溶解和无水乙醇沉淀,重复操作循环三次,将产物在45℃真空干燥48h,即可制得醛基化黄原胶;
将上述制得的醛基化黄原胶溶于去离子水中配制成浓度为1.0wt%的醛基化黄原胶溶液,同时,将正十二胺溶于10mL无水乙醇中得到正十二胺溶液,将此正十二胺溶液缓缓滴加到醛基化黄原胶溶液中,用1%的甲酸溶液调节pH在5~6范围内,控制温度35℃反应2h,此后,在冰水浴中边搅拌边加硼氢化钠,继续反应12h,停止反应,加入过量无水乙醇沉淀产物,4℃静置8h,过滤、将产物冷冻干燥称重,即得到实施例1~4的改性黄原胶,分别标记为RXG-1、RXG-2、RXG-3和RXG-4,其重量分别为1.8g、2.1g、2.3g和2.4g。
产品表征
1、红外光谱表征
将实施例1~4所制得的改性黄原胶RXG-1~RXG-4用冷冻干燥机进行冷冻干燥,采用全反射傅立叶红外光谱仪(ATR,Nicolet 6700型,美国赛默飞世尔科技有限公司)对其进行表征,扫描范围为4000~500cm-1。如图2所示为实施例1~4所制得的疏水改性黄原胶的红外光谱图,从图2可以看到,在3300~3400cm-1的宽峰是糖环上的-OH伸缩振动峰;在1100cm-1处的吸收峰是糖苷键上氧醚键C-O-C的伸缩振动峰;1733cm-1和1601cm-1处的吸收峰分别为大分子中乙酰基团以及丙酮酸基团的羧基-COOH和羧酸盐-COO-Na+的振动峰;1465cm-1左右的峰为正十二胺中亚甲基-CH2的弯曲振动吸收峰。这些特征峰表明了实施例1~4所制得的改性黄原胶的成功合成。
2、元素分析
将改性前的黄原胶XG与实施例1~4所制得的改性黄原胶RXG-1~RXG-4用冷冻干燥机进行冷冻干燥,用元素分析仪(VARIOEL III型元素分析仪,德国Elementar公司)测试样品中的C、H、N元素的含量,测试结果如下表2所示:
表2
样品编号 | 样品量(mg) | N(%) | C(%) | H(%) |
XG | 4.0 | 0.31 | 36.1 | 5.3 |
RXG-1 | 4.3 | 1.34 | 36.4 | 5.8 |
RXG-2 | 4.6 | 1.65 | 37.8 | 6.1 |
RXG-3 | 5.3 | 1.86 | 38.1 | 6.3 |
RXG-4 | 5.8 | 1.97 | 38.9 | 6.5 |
从表2可以看出,RXG-1~RXG-4的氮含量百分数较XG增加,这是因为正十二胺分子中的氮含量百分数为4.9%,当正十二胺引入到黄原胶中,提高了改性黄原胶的氮含量,从而进一步证明了实施例1~4的改性反应成功。
3、形貌测定
以实施例1所制得的改性黄原胶RXG-1为例进行形貌测定,测定方法为:
将干燥后的RXG-1样品0.1g置于20mL去离子水中,室温搅拌数小时,用激光笔照射发现丁达尔现象,将胶体粒子溶液滴于硅片上,自然干燥后喷金,利用扫描电子显微镜(S-4800,日本日立公司)在高真空状态下观察颗粒形貌,其加速电压调至1kV,结果如图3所示。从图3可以发现球型颗粒的存在,说明经过改性之后的产物具有两亲性结构,这是因为具有疏水性的正十二烷基通过局部团聚形成胶体粒子的内层,而黄原胶分子中的羧基、羟基等形成亲水性的外层,从而在水溶液中形成稳定的球型胶体粒子。
实施例5
本发明还提供了一种上述改性黄原胶在药物负载及其释放中的应用,所述的药物可以为阿莫西林或布洛芬,此处以布洛芬为例进行说明。
分别将改性前的黄原胶XG和实施例1~4所制得的改性黄原胶RXG-1~RXG-4加入到100mL去离子水中,用0.1M氢氧化钠溶液调节pH到8~9,添加布洛芬1.4g搅拌均匀,再添加1,4-丁二醇双缩水甘油醚0.15g,继续机械搅拌直到完全混合均匀,然后转移到直径为5cm的玻璃试管中,在40℃恒温水浴中加热8h,从试管中取出产物,用小刀切成厚度为1cm的薄片,将负载布洛芬的改性黄原胶冷冻干燥,然后分别置于pH为6.8的磷酸盐缓冲液中(37±0.5)℃释放,在265nm处检测吸光度,计算累积释放量。
如图4所示为改性前后的黄原胶样品对于布洛芬的累积释放曲线图,从图4可以看出,相较于与改性前的黄原胶XG,改性后的黄原胶样品RXG-1~RXG-4对于药物具有较好的缓释作用,且RXG-1~RXG-4的缓释效果逐渐加强,表明随着改性产物中疏水性组分的增加,缓释效果加强。
以上所述仅为本发明的较佳实施例,但本发明的保护范围并不局限于此。凡依本发明申请专利范围未违背本发明涉及原则所做的均等变化、简化与修饰,皆应属本发明的涵盖范围。
Claims (10)
1.一种改性黄原胶的制备方法,其特征在于,包括以下步骤:
步骤1,将黄原胶溶解在去离子水中配制成黄原胶溶液,用碱液调节pH至9~10,在搅拌状态下滴加缩水甘油醚,经升温反应后,用有机溶剂清洗得到羟基化黄原胶溶液;
步骤2,在步骤1所制得的羟基化黄原胶溶液中添加高碘酸钠溶液,经低温避光反应后,加入乙二醇终止反应,用过量无水乙醇沉淀出产物,将产物反复溶解、沉淀后,经干燥得到醛基化黄原胶;
步骤3,将步骤2所制得的醛基化黄原胶用去离子水配制成醛基化黄原胶溶液,同时,将烷基胺溶于无水乙醇中配制成烷基胺溶液,并将烷基胺溶液加到上述醛基化黄原胶溶液中,用酸溶液调节pH至5~6,经控温反应后,在冰水浴中边搅拌边加硼氢化钠继续反应至结束,经沉淀、静置、过滤、干燥,得到所述改性黄原胶。
2.如权利要求1所述的一种改性黄原胶的制备方法,其特征在于,在步骤1中,所述黄原胶溶液的浓度为1.2~2.0wt%;所述缩水甘油醚的重量占黄原胶重量的60~85%;所述碱液为氢氧化钠溶液,浓度为1~1.5wt%;所述有机溶剂为石油醚、甲醇或乙醇中的一种。
3.如权利要求1所述的一种改性黄原胶的制备方法,其特征在于,在步骤1中,所述升温反应的条件为:升温至50~55℃反应4~5h。
4.如权利要求1所述的一种改性黄原胶的制备方法,其特征在于,在步骤2中,所述高碘酸钠溶液的浓度为0.30~0.40mol/L,添加量为黄原胶溶液体积的18~32%;所述乙二醇的添加量为高碘酸钠溶液体积的20%。
5.如权利要求1所述的一种改性黄原胶的制备方法,其特征在于,在步骤2中,所述低温避光反应的条件为:于4℃下避光反应12~24h;所述干燥的条件为:于45℃真空干燥48h。
6.如权利要求1所述的一种改性黄原胶的制备方法,其特征在于,在步骤3中,所述醛基化黄原胶溶液的浓度为1.0~1.2wt%;所述烷基胺选自正辛胺、正壬胺、正庚胺、正十一胺或正十二胺中的一种,烷基胺的用量是黄原胶重量的1~1.7倍;所述硼氢化钠的添加量为烷基胺重量的40%;所述酸溶液为甲酸,浓度为1~2wt%。
7.如权利要求1所述的一种改性黄原胶的制备方法,其特征在于,在步骤3中,所述控温反应的条件为:控制温度35℃反应2h;所述继续反应的时间为12h;所述静置的条件为:于4℃静置8~12h。
8.如权利要求1~7任意一项所述的一种改性黄原胶的制备方法制成的黄原胶,其特征在于,所述改性黄原胶具有两亲性结构,在水溶液中形成稳定的球型胶体粒子。
9.如权利要求8所述的黄原胶作为药物载体的应用。
10.如权利要求9所述的黄原胶作为药物载体的应用,其特征在于,所述药物为阿莫西林或布洛芬。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202110058359.4A CN112830979A (zh) | 2021-01-15 | 2021-01-15 | 一种改性黄原胶及其制备方法与应用 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202110058359.4A CN112830979A (zh) | 2021-01-15 | 2021-01-15 | 一种改性黄原胶及其制备方法与应用 |
Publications (1)
Publication Number | Publication Date |
---|---|
CN112830979A true CN112830979A (zh) | 2021-05-25 |
Family
ID=75928516
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202110058359.4A Pending CN112830979A (zh) | 2021-01-15 | 2021-01-15 | 一种改性黄原胶及其制备方法与应用 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN112830979A (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN116831223A (zh) * | 2023-07-13 | 2023-10-03 | 济南中牧澳利生物科技有限责任公司 | 一种缓释复合维生素的预混料 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000334279A (ja) * | 1999-05-28 | 2000-12-05 | Asahi Chem Ind Co Ltd | 人工透析用再生セルロース系分離膜 |
WO2011002956A1 (en) * | 2009-07-02 | 2011-01-06 | E. I. Du Pont De Nemours And Company | Aldehyde-functionalized polysaccharides |
CN104169305A (zh) * | 2012-03-14 | 2014-11-26 | 纳诺沃勒斯有限公司 | 制备多糖纳米粒的方法 |
DE102015000795A1 (de) * | 2015-01-23 | 2016-07-28 | Se Tylose Gmbh & Co. Kg | Reversibel vernetzte Celluloseether und Verfahren zu deren Herstellung durch selektive Oxidation von vicinalen OH-Gruppen |
CN105985448A (zh) * | 2015-03-20 | 2016-10-05 | 杨达志 | 多糖-聚胺共聚物及其质子化的阳离子共聚物、制备方法及作为磷酸盐移除剂的应用 |
CN106511271A (zh) * | 2016-10-21 | 2017-03-22 | 湖北工业大学 | 脂肪胺接枝魔芋葡甘聚糖载药纳米胶束及制备方法 |
-
2021
- 2021-01-15 CN CN202110058359.4A patent/CN112830979A/zh active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000334279A (ja) * | 1999-05-28 | 2000-12-05 | Asahi Chem Ind Co Ltd | 人工透析用再生セルロース系分離膜 |
WO2011002956A1 (en) * | 2009-07-02 | 2011-01-06 | E. I. Du Pont De Nemours And Company | Aldehyde-functionalized polysaccharides |
CN104169305A (zh) * | 2012-03-14 | 2014-11-26 | 纳诺沃勒斯有限公司 | 制备多糖纳米粒的方法 |
DE102015000795A1 (de) * | 2015-01-23 | 2016-07-28 | Se Tylose Gmbh & Co. Kg | Reversibel vernetzte Celluloseether und Verfahren zu deren Herstellung durch selektive Oxidation von vicinalen OH-Gruppen |
CN105985448A (zh) * | 2015-03-20 | 2016-10-05 | 杨达志 | 多糖-聚胺共聚物及其质子化的阳离子共聚物、制备方法及作为磷酸盐移除剂的应用 |
CN106511271A (zh) * | 2016-10-21 | 2017-03-22 | 湖北工业大学 | 脂肪胺接枝魔芋葡甘聚糖载药纳米胶束及制备方法 |
Non-Patent Citations (7)
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN116831223A (zh) * | 2023-07-13 | 2023-10-03 | 济南中牧澳利生物科技有限责任公司 | 一种缓释复合维生素的预混料 |
CN116831223B (zh) * | 2023-07-13 | 2024-02-13 | 济南中牧澳利生物科技有限责任公司 | 一种缓释复合维生素的预混料 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Liu et al. | Synthesis of carboxymethyl chitin in aqueous solution and its thermo-and pH-sensitive behaviors | |
Xiao et al. | Preparation and characterization of octenyl succinic anhydride modified agarose derivative | |
Yang et al. | Amphiphilic cholesteryl grafted sodium alginate derivative: Synthesis and self-assembly in aqueous solution | |
Chiu et al. | pH-triggered injectable hydrogels prepared from aqueous N-palmitoyl chitosan: in vitro characteristics and in vivo biocompatibility | |
JP6389470B2 (ja) | ポリα−1,3−グルカンエーテルの調製 | |
EP2532685B1 (en) | Polymer hydrogels and use thereof | |
Li et al. | A biodegradable starch hydrogel synthesized via thiol-ene click chemistry | |
Peng et al. | Synthesis and characterization of carboxymethyl xylan-g-poly (propylene oxide) and its application in films | |
Gu et al. | Preparation of starch nanospheres through hydrophobic modification followed by initial water dialysis | |
CN103450361A (zh) | 羧甲基纤维素接枝聚乳酸两亲性聚合物及其制备方法与应用 | |
CN102827293B (zh) | 一种炔基羟丙基纤维素及其温敏性水凝胶的制备方法与应用 | |
Cai et al. | Rheological characterization of novel carboxymethylated curdlan-silica hybrid hydrogels with tunable mechanical properties | |
CN100571781C (zh) | 生物素化普鲁兰多糖纳米微粒及其制备方法 | |
Murdzheva et al. | Microwave-assisted synthesis of methyl esters of alginic acids as potential drug carrier | |
Bertoldo et al. | Oxidation of glycogen “molecular nanoparticles” by periodate | |
CN112830979A (zh) | 一种改性黄原胶及其制备方法与应用 | |
CN114891196B (zh) | 可注射凝胶聚羟基脂肪酸酯及其制备方法和用途 | |
Gorshkova et al. | Water-soluble modified chitosan and its interaction with a polystyrenesulfonate anion | |
CN106496603B (zh) | 基于阳离子型两亲性聚合物的自组装纳米胶束的制备方法 | |
Miao et al. | Ring-opening polymerization of cyclic esters initiated by cyclodextrins | |
Yu et al. | Preparation and characterization of biosurfactant based on hydrophobically modified alginate | |
CN108102079A (zh) | 一种聚l-乳酸葡萄糖共聚物材料及其制备方法 | |
CN108250323A (zh) | 一种壳聚糖-hpmcp接枝共聚物的制备方法 | |
Kondaveeti et al. | Synthesis of self-assembly of agarose-fatty acid ester nanoparticles | |
US11191728B2 (en) | Method of preparing degradable and environment responsive composite microgels |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
RJ01 | Rejection of invention patent application after publication | ||
RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210525 |