CN112194816B - 一种用于分离糖蛋白的改性纤维素气凝胶的制备方法 - Google Patents
一种用于分离糖蛋白的改性纤维素气凝胶的制备方法 Download PDFInfo
- Publication number
- CN112194816B CN112194816B CN202010975603.9A CN202010975603A CN112194816B CN 112194816 B CN112194816 B CN 112194816B CN 202010975603 A CN202010975603 A CN 202010975603A CN 112194816 B CN112194816 B CN 112194816B
- Authority
- CN
- China
- Prior art keywords
- cellulose aerogel
- solution
- product
- polyethyleneimine
- modified cellulose
- 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.)
- Active
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/28—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by elimination of a liquid phase from a macromolecular composition or article, e.g. drying of coagulum
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
- B01J20/28047—Gels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/24—Naturally occurring macromolecular compounds, e.g. humic acids or their derivatives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/305—Addition of material, later completely removed, e.g. as result of heat treatment, leaching or washing, e.g. for forming pores
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/3071—Washing or leaching
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/3085—Chemical treatments not covered by groups B01J20/3007 - B01J20/3078
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K1/00—General methods for the preparation of peptides, i.e. processes for the organic chemical preparation of peptides or proteins of any length
- C07K1/14—Extraction; Separation; Purification
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K1/00—General methods for the preparation of peptides, i.e. processes for the organic chemical preparation of peptides or proteins of any length
- C07K1/14—Extraction; Separation; Purification
- C07K1/145—Extraction; Separation; Purification by extraction or solubilisation
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K1/00—General methods for the preparation of peptides, i.e. processes for the organic chemical preparation of peptides or proteins of any length
- C07K1/14—Extraction; Separation; Purification
- C07K1/16—Extraction; Separation; Purification by chromatography
- C07K1/22—Affinity chromatography or related techniques based upon selective absorption processes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B15/00—Preparation of other cellulose derivatives or modified cellulose, e.g. complexes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B15/00—Preparation of other cellulose derivatives or modified cellulose, e.g. complexes
- C08B15/02—Oxycellulose; Hydrocellulose; Cellulosehydrate, e.g. microcrystalline cellulose
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B15/00—Preparation of other cellulose derivatives or modified cellulose, e.g. complexes
- C08B15/05—Derivatives containing elements other than carbon, hydrogen, oxygen, halogens or sulfur
- C08B15/06—Derivatives containing elements other than carbon, hydrogen, oxygen, halogens or sulfur containing nitrogen, e.g. carbamates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B16/00—Regeneration of cellulose
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/28—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by elimination of a liquid phase from a macromolecular composition or article, e.g. drying of coagulum
- C08J9/283—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by elimination of a liquid phase from a macromolecular composition or article, e.g. drying of coagulum a discontinuous liquid phase emulsified in a continuous macromolecular phase
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/36—After-treatment
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L1/00—Compositions of cellulose, modified cellulose or cellulose derivatives
- C08L1/02—Cellulose; Modified cellulose
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L1/00—Compositions of cellulose, modified cellulose or cellulose derivatives
- C08L1/08—Cellulose derivatives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2201/00—Foams characterised by the foaming process
- C08J2201/04—Foams characterised by the foaming process characterised by the elimination of a liquid or solid component, e.g. precipitation, leaching out, evaporation
- C08J2201/048—Elimination of a frozen liquid phase
- C08J2201/0484—Elimination of a frozen liquid phase the liquid phase being aqueous
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2205/00—Foams characterised by their properties
- C08J2205/02—Foams characterised by their properties the finished foam itself being a gel or a gel being temporarily formed when processing the foamable composition
- C08J2205/026—Aerogel, i.e. a supercritically dried gel
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2301/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives
- C08J2301/02—Cellulose; Modified cellulose
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2301/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives
- C08J2301/08—Cellulose derivatives
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Analytical Chemistry (AREA)
- Polymers & Plastics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biochemistry (AREA)
- Materials Engineering (AREA)
- Engineering & Computer Science (AREA)
- Biophysics (AREA)
- Proteomics, Peptides & Aminoacids (AREA)
- Molecular Biology (AREA)
- Genetics & Genomics (AREA)
- General Health & Medical Sciences (AREA)
- Dispersion Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
本发明公开了一种用于分离糖蛋白的改性纤维素气凝胶的制备方法,该方法以纤维素气凝胶为基材,由于其具备三维网络结构,低密度,高比表面积和大孔隙率等优点可以为糖蛋白提供更多的结合位点。树枝状大分子聚乙烯亚胺(PEI)具有丰富的官能团且易修饰,通过对其进行改性,可以提高苯硼酸配体的密度,增大对糖蛋白的亲和力。
Description
技术领域
本发明属于糖蛋白分离技术领域,涉及一种用于分离糖蛋白的改性纤维素气凝胶的制备方法。
背景技术
蛋白质糖基化在调节各种复杂的生物过程中,如免疫应答和蛋白质折叠等起着至关重要的作用。且糖蛋白的糖链结构和构型的变化往往和疾病的发生发展过程相关,如在癌症、肿瘤等疾病中有很多异常的糖基化蛋白。在生物检测中,糖蛋白被认为是重要的生物标记物和治疗靶点,并被用于医疗诊断中。但由于糖蛋白在复杂生物样品或临床样品中丰度较低,因此进行目标蛋白的分离和富集十分重要。
常见的糖蛋白分离材料包括有机整体材料、无机整体材料、磁性物质材料。其中有机整体材料存在着有机溶剂易溶胀、机械稳定性不足,比表面积低、渗透率低的缺点;无机整体材料通常需要多步制备、过程复杂且pH稳定性差;而磁性物质材料由于具有强磁性、分子间偶极力从而导致其易团聚、分散性差,并且有生物毒性。
纤维素是一种天然亲水性聚合物,具有来源广泛、无毒、生物相容性好而被广泛应用于生物医药领域。气凝胶是一类具有三维网络结构,低密度,高比表面积和大孔隙率的多孔材料。由于其独特的物理结构和特性,已广泛用于分离领域。以纤维素气凝胶为基材,基于硼酸法分离糖蛋白,利用硼酸与顺式二醇的可逆结合特性:碱性条件下,硼酸为四方形sp3结构,可与顺式二醇酯化形成可逆性共价键;酸性条件下,硼酸为三角形sp2结构,与顺式二醇的结合力显著下降。通过调节pH,可有效分离糖蛋白,具有操作简单快捷、成本低廉、环境友好等优点,在分离糖蛋白的应用中受到广泛关注。
发明内容
本发明的目的是提供一种用于分离糖蛋白的改性纤维素气凝胶的制备方法,通过对纤维素气凝胶进行改性,可以提高苯硼酸配体的密度,增大对糖蛋白的亲和力,分离糖蛋白。
本发明所采用的技术方案是,一种用于分离糖蛋白的改性纤维素气凝胶的制备方法,具体包括如下步骤:
步骤1,将NaOH、尿素加入去离子水中,搅拌混合均匀得混合液A,然后将混合液A在-12.5℃进行预冷,得到溶液A;
步骤2,将纤维素加入到步骤1所得的溶液A中,搅拌至纤维素完全溶解,再加入2~5mL环氧氯丙烷,搅拌均匀,得到溶液B;将溶液B倒入模具中,静置24小时,洗涤并冷冻干燥,得到再生纤维素气凝胶;
步骤3,将步骤2所得的再生纤维素气凝胶、高碘酸钠加入去离子水中,搅拌均匀,得到溶液C,溶液C在50~70℃下,避光反应5~7h,反应结束后,再向溶液C中加入3~5mL乙二醇搅拌30~60min,得产物A,将产物A用去离子水、乙醇洗涤,冷冻干燥,得到二醛纤维素气凝胶;
步骤4,将步骤3所得产物二醛纤维素气凝胶加入无水乙醇中,得混合液B,将聚乙烯亚胺、氰基硼氢化钠加入混合液B中,并在50~70℃下反应6h,得产物B,将产物B用乙醇洗涤至中性,冷冻干燥,得聚乙烯亚胺改性纤维素气凝胶;
步骤5,将4-(溴甲基)苯硼酸溶于100~500mL无水乙醇中混合均匀,得混合液C,然后将步骤4所得的聚乙烯亚胺改性纤维素气凝胶、氰化硼氢化钠加入混合液C中,在50℃下反应12~24h,得产物C,将产物C用蒸馏水、乙醇洗涤去除残余反应物,然后真空干燥,得到聚乙烯亚胺/苯硼酸改性纤维素气凝胶。
本发明的特点还在于,
步骤1中NaOH用量为6~10g,尿素用量为9~13g,去离子水用量为77~85mL。
步骤2中,纤维素用量为2~5g。
步骤3中,再生纤维素气凝胶与高碘酸钠的摩尔比为1:1~1.5,去离子水的用量为150~500mL。
步骤4中二醛纤维素气凝胶的用量为1~1.5g,无水乙醇的用量为50~200mL,聚乙烯亚胺的用量为2.7~4.5g,氰基硼氢化钠的用量为3~5g。
步骤5中4-(溴甲基)苯硼酸的用量为3~5g,无水乙醇的用量为100~500mL,聚乙烯亚胺改性纤维素气凝胶的用量为1~3g,氰化硼氢化钠的用量为5~8g。
本发明的有益效果是,本发明以纤维素气凝胶为基材,由于其具备三维网络结构,低密度,高比表面积和大孔隙率等优点可以为糖蛋白提供更多的结合位点。树枝状大分子聚乙烯亚胺(PEI)具有丰富的官能团且易修饰,通过对其进行改性,可以提高苯硼酸配体的密度,增大对糖蛋白的亲和力。
具体实施方式
下面结合具体实施方式对本发明进行详细说明。
本发明一种用于分离糖蛋白的改性纤维素气凝胶的制备方法,具体包括如下步骤:
步骤1,称取6~10gNaOH、9~13g尿素加入77~85mL去离子水中,搅拌混合均匀,然后将其在-12.5℃进行预冷,得到溶液A。
步骤2,在剧烈搅拌下,将2~5g纤维素(棉短绒纸浆,DP=600,α-纤维素含量>95%)加入到溶液A中,搅拌至纤维素A完全溶解,加入2~5mL环氧氯丙烷,继续搅拌,得到溶液B。最后,将溶液B倒入模具中,静置24小时,洗涤并冷冻干燥,得到再生纤维素气凝胶(R-CA)。
步骤3,取1molR-CA、1~1.5mol高碘酸钠与150~500mL去离子水中,混合搅拌均匀,得到溶液C,将溶液C在50~70℃下、避光反应5~7h。反应结束后,再向其中加入3~5mL乙二醇搅拌30~60min。将产物用去离子水、乙醇洗涤、冷冻干燥,得到二醛纤维素气凝胶(D-CA)。
步骤4,取1~1.5gD-AC于50~200mL无水乙醇中,然后取2.7~4.5g聚乙烯亚胺PEI、3~5g氰化硼氢化钠加入上述反应体系中,并在50~70℃下反应6h。最后,将混合物用大量乙醇洗涤至中性,冷冻干燥,得到聚乙烯亚胺改性纤维素气凝胶PEI-CA。
步骤5,将3~5gPBA溶于100~500mL无水乙醇中混合均匀,称取1~3gPEI-CA、5~8g氰化硼氢化钠加入其中,50℃,反应12~24h。产物用蒸馏水、乙醇洗涤去除残余反应物,之后真空干燥,得到聚乙烯亚胺/苯硼酸改性纤维素气凝胶(PEI-PBA-CA)。
实施例1
步骤1,称取6gNaOH、9g尿素加入85mL去离子水中,搅拌混合均匀,然后将其在-12.5℃进行预冷,得到溶液A。
步骤2,在剧烈搅拌下,将2g棉短绒纸浆加入到溶液A中,搅拌至纤维素完全溶解。加入2mL环氧氯丙烷,继续搅拌,得到溶液B。最后,将溶液B倒入模具中,静置24小时,洗涤并冷冻干燥,得到再生纤维素气凝胶(R-CA)。
步骤3,取1molR-CA、1mol高碘酸钠与150mL去离子水中,混合搅拌均匀,得到溶液C。50℃、避光反应5h。反应结束后,再向其中加入3mL乙二醇搅拌30min。将产物用去离子水、乙醇洗涤、冷冻干燥,得到二醛纤维素气凝胶(D-CA)。
步骤4,取1gD-AC于50mL无水乙醇中。然后,取2.7gPEI、3g氰化硼氢化钠加入上述反应体系中,并在50℃下反应6h。最后,将混合物用大量乙醇洗涤至中性,冷冻干燥,得到聚乙烯亚胺改性纤维素气凝胶PEI-CA。
步骤5,3gPBA溶于100mL无水乙醇中混合均匀,称取1gPEI-CA、5g氰化硼氢化钠加入其中,50℃,反应12h。产物用蒸馏水、乙醇洗涤去除残余反应物,之后真空干燥,得到聚乙烯亚胺/苯硼酸改性纤维素气凝胶(PEI-PBA-CA)。
实施例2
步骤1,称取7gNaOH、12g尿素加入81mL去离子水中,搅拌混合均匀,然后将其在-12.5℃进行预冷,得到溶液A。
步骤2,在剧烈搅拌下,将3g棉短绒纸浆加入到溶液A中,搅拌至纤维素完全溶解。加入2mL环氧氯丙烷,继续搅拌,得到溶液B。最后,将溶液B倒入模具中,静置24小时,洗涤并冷冻干燥,得到再生纤维素气凝胶(R-CA)。
步骤3,取1molR-CA、1.1mol高碘酸钠与200mL去离子水中,混合搅拌均匀,得到溶液C。70℃、避光反应5h。反应结束后,再向其中加入4mL乙二醇搅拌60min。将产物用去离子水、乙醇洗涤、冷冻干燥,得到二醛纤维素气凝胶(D-CA)。
步骤4,取1.5gD-AC于150mL无水乙醇中。然后,取4.0gPEI、5g氰化硼氢化钠加入上述反应体系中,并在70℃下反应6h。最后,将混合物用大量乙醇洗涤至中性,冷冻干燥,得到聚乙烯亚胺改性纤维素气凝胶PEI-CA。
步骤5,3gPBA溶于300mL无水乙醇中混合均匀,称取3gPEI-CA、8g氰化硼氢化钠加入其中,50℃,反应24h。产物用蒸馏水、乙醇洗涤去除残余反应物,之后真空干燥,得到聚乙烯亚胺/苯硼酸改性纤维素气凝胶(PEI-PBA-CA)。
实施例3
步骤1,称取10gNaOH、9g尿素加入81mL去离子水中,搅拌混合均匀,然后将其在-12.5℃进行预冷,得到溶液A。
步骤2,在剧烈搅拌下,将4g棉短绒纸浆加入到溶液A中,搅拌至纤维素完全溶解。加入5mL环氧氯丙烷,继续搅拌,得到溶液B。最后,将溶液B倒入模具中,静置24小时,洗涤并冷冻干燥,得到再生纤维素气凝胶(R-CA)。
步骤3,取1molR-CA、1.5mol高碘酸钠与300mL去离子水中,混合搅拌均匀,得到溶液C。70℃、避光反应7h。反应结束后,再向其中加入5mL乙二醇搅拌60min。将产物用去离子水、乙醇洗涤、冷冻干燥,得到二醛纤维素气凝胶(D-CA)。
步骤4,取1.5gD-AC于200mL无水乙醇中。然后,取2.7gPEI、4.5g氰化硼氢化钠加入上述反应体系中,并在50℃下反应6h。最后,将混合物用大量乙醇洗涤至中性,冷冻干燥,得到聚乙烯亚胺改性纤维素气凝胶PEI-CA。
步骤5,4gPBA溶于450mL无水乙醇中混合均匀,称取2.5gPEI-CA、6g氰化硼氢化钠加入其中,50℃,反应12h。产物用蒸馏水、乙醇洗涤去除残余反应物,之后真空干燥,得到聚乙烯亚胺/苯硼酸改性纤维素气凝胶(PEI-PBA-CA)。
实施例4
步骤1,称取10gNaOH、10g尿素加入80mL去离子水中,搅拌混合均匀,然后将其在-12.5℃进行预冷,得到溶液A。
步骤2,在剧烈搅拌下,将5g棉短绒纸浆加入到溶液A中,搅拌至纤维素完全溶解。加入5mL环氧氯丙烷,继续搅拌,得到溶液B。最后,将溶液B倒入模具中,静置24小时,洗涤并冷冻干燥,得到再生纤维素气凝胶(R-CA)。
步骤3,取1molR-CA、1.3mol高碘酸钠与500mL去离子水中,混合搅拌均匀,得到溶液C。70℃、避光反应7h。反应结束后,再向其中加入5mL乙二醇搅拌30min。将产物用去离子水、乙醇洗涤、冷冻干燥,得到二醛纤维素气凝胶(D-CA)。
步骤4,取1.2gD-AC于100mL无水乙醇中。然后,取3.5gPEI、3.5g氰化硼氢化钠加入上述反应体系中,并在70℃下反应6h。最后,将混合物用大量乙醇洗涤至中性,冷冻干燥,得到聚乙烯亚胺改性纤维素气凝胶PEI-CA。
步骤5,4.5gPBA溶于100~500mL无水乙醇中混合均匀,称取3gPEI-CA、7.5g氰化硼氢化钠加入其中,50℃,反应24h。产物用蒸馏水、乙醇洗涤去除残余反应物,之后真空干燥,得到聚乙烯亚胺/苯硼酸改性纤维素气凝胶(PEI-PBA-CA)。
实施例5
步骤1,称取6gNaOH、13g尿素加入81mL去离子水中,搅拌混合均匀,然后将其在-12.5℃进行预冷,得到溶液A。
步骤2,在剧烈搅拌下,将4g棉短绒纸浆加入到溶液A中,搅拌至纤维素完全溶解。加入3.5mL环氧氯丙烷,继续搅拌,得到溶液B。最后,将溶液B倒入模具中,静置24小时,洗涤并冷冻干燥,得到再生纤维素气凝胶(R-CA)。
步骤3,取1molR-CA、1.1mol高碘酸钠与350mL去离子水中,混合搅拌均匀,得到溶液C。65℃、避光反应7h。反应结束后,再向其中加入5mL乙二醇搅拌60min。将产物用去离子水、乙醇洗涤、冷冻干燥,得到二醛纤维素气凝胶(D-CA)。
步骤4,取1gD-AC于50~200mL无水乙醇中。然后,取4.5gPEI、5g氰化硼氢化钠加入上述反应体系中,并在70℃下反应6h。最后,将混合物用大量乙醇洗涤至中性,冷冻干燥,得到聚乙烯亚胺改性纤维素气凝胶PEI-CA。
步骤5,5gPBA溶于500mL无水乙醇中混合均匀,称取2.5gPEI-CA、6g氰化硼氢化钠加入其中,50℃,反应24h。产物用蒸馏水、乙醇洗涤去除残余反应物,之后真空干燥,得到聚乙烯亚胺/苯硼酸改性纤维素气凝胶(PEI-PBA-CA)。
本发明一种用于分离糖蛋白的改性纤维素气凝胶的制备方法的优点如下:
1.制备聚乙烯亚胺/苯硼酸改性纤维素气凝胶过程操作简单、安全环保、材料生物相容性好;
2.使用聚乙烯亚胺改性纤维素气凝胶,可以增强选择性和识别能力,提高材料分离性能;
3.可通过简单调节pH,简单有效分离糖蛋白。碱性条件下,硼酸为四方形sp3结构,可与糖蛋白形成可逆性共价键;酸性条件下,硼酸为三角形sp2结构,发生解离。
Claims (3)
1.一种用于分离糖蛋白的改性纤维素气凝胶的制备方法,其特征在于:具体包括如下步骤:
步骤1,将NaOH、尿素加入去离子水中,搅拌混合均匀得混合液A,然后将混合液A在-12.5℃进行预冷,得到溶液A;
步骤2,将纤维素加入到步骤1所得的溶液A中,搅拌至纤维素完全溶解,再加入2~5 mL环氧氯丙烷,搅拌均匀,得到溶液B;将溶液B倒入模具中,静置24小时,洗涤并冷冻干燥,得到再生纤维素气凝胶;
步骤2中,纤维素用量为2~5 g;
步骤3,将步骤2所得的再生纤维素气凝胶、高碘酸钠加入去离子水中,搅拌均匀,得到溶液C,溶液C在50~70℃下,避光反应5~7 h,反应结束后,再向溶液C中加入3~5 mL乙二醇搅拌30~60 min,得产物A,将产物A用去离子水、乙醇洗涤,冷冻干燥,得到二醛纤维素气凝胶;
所述步骤3中,再生纤维素气凝胶与高碘酸钠的摩尔比为1:1~1.5,去离子水的用量为150~500 mL;
步骤4,将步骤3所得产物二醛纤维素气凝胶加入无水乙醇中,得混合液B,将聚乙烯亚胺、氰化硼氢化钠加入混合液B中,并在50~70℃下反应6 h,得产物B,将产物B用乙醇洗涤至中性,冷冻干燥,得聚乙烯亚胺改性纤维素气凝胶;
步骤5,将4-(溴甲基)苯硼酸溶于100~500 mL无水乙醇中混合均匀,得混合液C,然后将步骤4所得的聚乙烯亚胺改性纤维素气凝胶、氰化硼氢化钠加入混合液C中,在50℃下反应12~24h,得产物C,将产物C用蒸馏水、乙醇洗涤去除残余反应物,然后真空干燥,得到聚乙烯亚胺/苯硼酸改性纤维素气凝胶;
所述步骤5中4-(溴甲基)苯硼酸的用量为3~5 g,无水乙醇的用量为100~500 mL,聚乙烯亚胺改性纤维素气凝胶的用量为1~3g,氰化硼氢化钠的用量为5~8g。
2.根据权利要求1所述的一种用于分离糖蛋白的改性纤维素气凝胶的制备方法,其特征在于:所述步骤1中NaOH用量为6~10g,尿素用量为9~13 g,去离子水用量为77~85 mL。
3.根据权利要求1所述的一种用于分离糖蛋白的改性纤维素气凝胶的制备方法,其特征在于:所述步骤4中二醛纤维素气凝胶的用量为1~1.5 g,无水乙醇的用量为50~200 mL,聚乙烯亚胺的用量为2.7~4.5g,氰化硼氢化钠的用量为3~5 g。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202010975603.9A CN112194816B (zh) | 2020-09-16 | 2020-09-16 | 一种用于分离糖蛋白的改性纤维素气凝胶的制备方法 |
US17/470,240 US11623204B2 (en) | 2020-09-16 | 2021-09-09 | Method for preparing modified cellulose aerogel for glycoprotein separation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202010975603.9A CN112194816B (zh) | 2020-09-16 | 2020-09-16 | 一种用于分离糖蛋白的改性纤维素气凝胶的制备方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN112194816A CN112194816A (zh) | 2021-01-08 |
CN112194816B true CN112194816B (zh) | 2022-05-27 |
Family
ID=74015264
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202010975603.9A Active CN112194816B (zh) | 2020-09-16 | 2020-09-16 | 一种用于分离糖蛋白的改性纤维素气凝胶的制备方法 |
Country Status (2)
Country | Link |
---|---|
US (1) | US11623204B2 (zh) |
CN (1) | CN112194816B (zh) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104148030A (zh) * | 2014-07-24 | 2014-11-19 | 上海交通大学 | 富含有机苯硼酸的聚乙烯亚胺修饰的二氧化硅微球及其制备方法和应用 |
CN109225177A (zh) * | 2018-09-06 | 2019-01-18 | 中国海洋大学 | 一种聚乙烯亚胺超支化琼脂糖基硼亲和材料的制备方法及其应用 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107141504A (zh) * | 2017-05-18 | 2017-09-08 | 林向阳 | 一种纤维素复合气凝胶的制备方法 |
CN108238595B (zh) * | 2018-03-23 | 2021-08-13 | 合肥学院 | 一种阻燃微晶纤维素/羟基磷灰石复合气凝胶及其制备方法 |
CN109908878A (zh) * | 2019-04-08 | 2019-06-21 | 东北林业大学 | 一种分级多孔纤维素基炭气凝胶及其制备方法 |
-
2020
- 2020-09-16 CN CN202010975603.9A patent/CN112194816B/zh active Active
-
2021
- 2021-09-09 US US17/470,240 patent/US11623204B2/en active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104148030A (zh) * | 2014-07-24 | 2014-11-19 | 上海交通大学 | 富含有机苯硼酸的聚乙烯亚胺修饰的二氧化硅微球及其制备方法和应用 |
CN109225177A (zh) * | 2018-09-06 | 2019-01-18 | 中国海洋大学 | 一种聚乙烯亚胺超支化琼脂糖基硼亲和材料的制备方法及其应用 |
Non-Patent Citations (3)
Title |
---|
DaojinLi et.al..A high boronate avidity monolithic capillary for the selective enrichment of trace glycoproteins.《JOURNAL OF CHROMATOGRAPHY A》.2015,第1384卷(第6期), * |
朱文静.超支化纤维素基吸附絮凝双功能材料的合成及其性能研究.《中国优秀博硕士学位论文全文数据库(硕士)工程科技Ⅰ辑》.2017,(第7期), * |
李宏振等.聚乙烯亚胺/纤维素的合成及表征.《东北林业大学学报》.2009,第37卷(第8期), * |
Also Published As
Publication number | Publication date |
---|---|
CN112194816A (zh) | 2021-01-08 |
US11623204B2 (en) | 2023-04-11 |
US20220080384A1 (en) | 2022-03-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN110551327B (zh) | 一种吡咯接枝纳米纤维素制备导电复合材料的方法 | |
CN101269930A (zh) | 酶解木质素或它的衍生物改性酚醛发泡材料及其制备方法 | |
CN111072852B (zh) | 介孔SiO2表面引发硼亲和印迹聚合物材料的制备方法及其应用于提取莽草酸 | |
JP2019515969A (ja) | イオン性ポリマーおよびバイオマスの処理におけるその使用 | |
CN112194816B (zh) | 一种用于分离糖蛋白的改性纤维素气凝胶的制备方法 | |
CN108383955B (zh) | 高羧基含量的木质素接枝聚羧酸盐及其制备方法与应用 | |
KR101479676B1 (ko) | 저분자 리그닌 유도체의 제조방법 | |
JPS61193068A (ja) | ゲルクロマトグラフイ−用粒状デキストランの製造方法 | |
CN112940150A (zh) | 一种由肝素钠制备肝素钙的方法 | |
CN116143954A (zh) | 一种羟丁基壳聚糖-没食子酸的制备纯化方法 | |
CN112110947A (zh) | 一种用于分离糖蛋白的离子液体改性苯硼酸的制备方法 | |
CN107082796B (zh) | 一种提纯蛋白酶解物中小分子多肽的方法 | |
CN102120823B (zh) | 水溶性玉米朊的合成及在药物制剂中的运用 | |
WO2014184446A1 (en) | Method for producing a curing agent | |
Qu et al. | Glycoprotein recognition by water-compatible core–shell polymeric submicron particles | |
CN114367311A (zh) | 一种悬浮聚合法制备微米级单分散高分子微球负载杂多酸催化剂的方法及应用 | |
CN108440693B (zh) | 一种高熔融指数树脂及其制备方法 | |
CN109666150B (zh) | 一种低氧诱导水凝胶及其制备方法 | |
CN110801820A (zh) | 一种环烯醚萜类多组分印迹复合材料的制备方法及应用 | |
CN107082821B (zh) | 一种提纯植物多糖的方法 | |
CN117164735B (zh) | 一种从咖啡渣制备含半乳葡甘露聚糖材料的方法及其应用 | |
CN113351190A (zh) | 一种固定化金属离子亲和色谱微球材料及其制备与应用 | |
CN101638681B (zh) | 一种海洋珍珠贝氨基甙的双水相萃取方法 | |
CN112876548B (zh) | 一种蛋白核小球藻抗氧化肽及其制备方法 | |
CN116120587B (zh) | 一种pH响应木质素及其制备方法和应用 |
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 | ||
GR01 | Patent grant | ||
GR01 | Patent grant |