Abstract:
:Through semi-interpenetration of polymer networks with poloxamer, mechanical properties of chitosan (CS) sponge were increased for wound dressing application. Synthesis of poloxamer macromer was confirmed by proton nuclear magnetic resonance (1H NMR) spectra. Possible interactions between CS and poloxamer in semi-interpenetrating polymer networks (SIPNs), and changes in crystalline structures of both polymers were evaluated by Fourier-transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD), respectively. Swelling behavior, thermal analysis, mechanical properties, and morphology of SIPNs were studied by thermal gravimetric analysis, differential scanning calorimetry (DSC), compressive modulus measurement, and scanning electron microscopy (SEM), respectively. Preparation of poloxamer macromer, and intermolecular hydrogen bonding between CS and poloxamer were confirmed by NMR and FTIR, respectively. Melting temperature of poloxamer in SIPNs decreased due to prevention of crystallization by incorporation of CS. Formation of SIPNs with poloxamer and increasing poloxamer content in CS/poloxamer SIPNs increased mechanical strength of CS sponge compared with CS/poloxamer blend. Formation of SIPNs with poloxamer remarkably increased water content of CS due to hydrophilicity of CS and poloxamer. These results suggest CS/poloxamer sponges prepared by SIPNs method have good possibility for wound dressing application owing to rapid water adsorption, high mechanical strength, and interconnected cross-sectional morphology of SIPNs.
journal_name
Int J Biol Macromoljournal_title
International journal of biological macromoleculesauthors
Kim IY,Yoo MK,Kim BC,Kim SK,Lee HC,Cho CSdoi
10.1016/j.ijbiomac.2005.12.020keywords:
subject
Has Abstractpub_date
2006-02-28 00:00:00pages
51-8issue
1eissn
0141-8130issn
1879-0003pii
S0141-8130(05)00278-3journal_volume
38pub_type
杂志文章abstract::Obesity is an important risk factor in tumor development. Botryosphaeran, a (1 → 3)(1 → 6)-β-D-glucan, produced by the fungus Botryosphaeria rhodina (MAMB-05), is a high molecular mass, water-soluble exopolysaccharide. It consists of a main chain of (1 → 3)-linked β-d-glucose units, with a degree of branching of ~22% ...
journal_title:International journal of biological macromolecules
pub_type: 杂志文章
doi:10.1016/j.ijbiomac.2020.09.168
更新日期:2020-12-15 00:00:00
abstract::The self-assembled polypseudorotaxane (PPRX) fabricated with bis-thiolated poly(ethylene glycol) (PEG) and α-cyclodextrin (α-CyD) acted as an activator for α-chymotrypsin (CT) and retained the activity of CT for a long time up to 7days. The stabilization mechanism was studied, and the interaction between CT and PPRX w...
journal_title:International journal of biological macromolecules
pub_type: 杂志文章
doi:10.1016/j.ijbiomac.2017.05.024
更新日期:2017-09-01 00:00:00
abstract::Alzheimer's disease (AD) is the only one among top ten diseases in USA that cannot be cured, prevented or slowed down. At molecular level the mechanism of onset has been closely associated with mis-folding of Aβ40 and Aβ42 and is well supported by the genetic data for AD. Extensive research efforts have led to identif...
journal_title:International journal of biological macromolecules
pub_type: 杂志文章
doi:10.1016/j.ijbiomac.2016.04.082
更新日期:2016-08-01 00:00:00
abstract::The present study is first of its kind that focuses upon the extraction of bromelain from pineapple core waste and stabilising it as insoluble cross-linked aggregates. The influence of process variables such as the choice of precipitant, type of cross-linker, concentration of cross-linker and the reaction time for cro...
journal_title:International journal of biological macromolecules
pub_type: 杂志文章
doi:10.1016/j.ijbiomac.2020.04.220
更新日期:2020-04-28 00:00:00
abstract::Interaction between split RNA aptamer and the clinically important target, HIV-1 Tat was investigated on a biosensing surface transduced by functionally choreographed multiwall carbon nanotubes (MWCNTs). Acid oxidation was performed to functionalize MWCNTs with carboxyl functional groups. X-ray photoelectron spectrosc...
journal_title:International journal of biological macromolecules
pub_type: 杂志文章
doi:10.1016/j.ijbiomac.2018.12.066
更新日期:2019-03-15 00:00:00
abstract::Despite the progress in the development of hemostatic products, efficient treatment solutions to control hemorrhage upon wounding are still necessary. Chitosan (CS) is a natural hydrogel-forming polysaccharide, easy to modify for specific applications. Inorganic compounds in turn possess documented hemostatic properti...
journal_title:International journal of biological macromolecules
pub_type: 杂志文章
doi:10.1016/j.ijbiomac.2020.06.187
更新日期:2020-11-01 00:00:00
abstract::Fibrinolytic enzymes are proteases responsible for cleavage of fibrin mesh in thrombus clots, which are the primary causative agents in cardiovascular diseases. Developing safe, effective and cheap thrombolytic agents are important for prevention and cure of thrombosis. Although a wide variety of sources have been dis...
journal_title:International journal of biological macromolecules
pub_type: 杂志文章,评审
doi:10.1016/j.ijbiomac.2020.07.303
更新日期:2020-11-15 00:00:00
abstract::Although the fungal ability to bind heavy metals has been known for many years, it was not determined which component is responsible for this process. The aim of the study was to isolate (1 → 3)-α-d-glucans from various fungi, select the most efficient compound in the biosorption of heavy metals, and determine its cha...
journal_title:International journal of biological macromolecules
pub_type: 杂志文章
doi:10.1016/j.ijbiomac.2019.07.036
更新日期:2019-09-15 00:00:00
abstract::In this study, lipase (LIP) was isolated from Aspergillus crevinus, statistically optimized and purified via ammonium sulfate fractionation (ASF), and Sephadex G-100 gel permeation chromatography. LIP was 2.26-folds purified with a specific activity of 223.60 U/mg. The molecular mass was estimated to be 60 kDa on sodi...
journal_title:International journal of biological macromolecules
pub_type: 杂志文章
doi:10.1016/j.ijbiomac.2018.07.192
更新日期:2018-11-01 00:00:00
abstract::Fibrin(ogen)olytic enzymes offer great promise for the treatment of thrombosis associated disorders. The present study describes the characterization of an extracellular fibrin(ogen)olytic serine protease (named Bacethrombase) purified from the Bacillus cereus strain FF01. The molecular mass of the Bacethrombase was d...
journal_title:International journal of biological macromolecules
pub_type: 杂志文章
doi:10.1016/j.ijbiomac.2015.04.075
更新日期:2015-08-01 00:00:00
abstract::Levansucrase gene (LmLEVS) was cloned from Leuconostoc mesenteroides MTCC 10508. The heterologous expression and purification of the truncated (TrLmLEVS) gene, lacking the N-terminal signal peptide, was performed in Escherichia coli. The recombinant enzyme (TrLmLEVS) was physico-kinetically characterized using sucrose...
journal_title:International journal of biological macromolecules
pub_type: 杂志文章
doi:10.1016/j.ijbiomac.2019.01.070
更新日期:2019-04-15 00:00:00
abstract::Plasmin (EC 3.4.21.7) is a key enzyme of the fibrinolytic system, responsible for the degradation of fibrin clot and maintaining blood fluidity. Hence, alterations of the fibrinolytic capacity of blood plasma may contribute to thrombotic or bleeding complications. The aim of this study was to determine effects of a bu...
journal_title:International journal of biological macromolecules
pub_type: 杂志文章
doi:10.1016/j.ijbiomac.2018.09.143
更新日期:2018-12-01 00:00:00
abstract::Breast cancer is believed as the second most common cause of cancer-related deaths in women for which tamoxifen is frequently prescribed. Despite many promises, tamoxifen is associated with various challenges like low hydrophilicity, poor bioavailability and dose-dependent toxicity. Therefore, it was envisioned to dev...
journal_title:International journal of biological macromolecules
pub_type: 杂志文章
doi:10.1016/j.ijbiomac.2016.08.080
更新日期:2016-12-01 00:00:00
abstract::A novel glucose-sensitive drug delivery system with controlled release of metronidazole was synthesized by using biocompatible photo-crosslinked chitosan hydrogel film. Specifically, methacrylic anhydride, as photosensitive substance, was firstly grafted on chitosan molecular chains and then UV irradiation was applied...
journal_title:International journal of biological macromolecules
pub_type: 杂志文章
doi:10.1016/j.ijbiomac.2018.09.202
更新日期:2019-02-01 00:00:00
abstract::In order to enhance the drug entrapment efficiency and improve the swelling behaviors of drug delivery system, Ca2+ crosslinking and freeze-thawing (FT) cycle techniques were used to prepare sodium alginate/poly(vinyl alcohol) (SA/PVA) hydrogel beads. The mixture solution of SA and PVA was firstly crosslinked with Ca2...
journal_title:International journal of biological macromolecules
pub_type: 杂志文章
doi:10.1016/j.ijbiomac.2010.03.004
更新日期:2010-06-01 00:00:00
abstract::A novel composite hydrogel was prepared as a dual drug delivery carrier. Poly(hydroxybutyrate-co-hydroxyvalerate) (PHBV) microparticles were prepared to encapsulate simultaneously ketoprofen and mupirocin, as hydrophobic drug models. These microparticles were embedded in a physically crosslinked hydrogel of κ-carragee...
journal_title:International journal of biological macromolecules
pub_type: 杂志文章
doi:10.1016/j.ijbiomac.2019.12.193
更新日期:2020-03-01 00:00:00
abstract::The process of recombinant protein production in E. coli system is often hampered by the formation of insoluble aggregates. Human Dihydrofolate reductase (hDHFR), an enzyme involved in the synthesis of purine, thymidilate and several other amino acids like glycine, methionine and serine is highly aggregation prone. It...
journal_title:International journal of biological macromolecules
pub_type: 杂志文章
doi:10.1016/j.ijbiomac.2017.05.143
更新日期:2017-10-01 00:00:00
abstract::Papain enzyme was successfully immobilized by covalent bonding onto biocompatible Fe3O4/SF nanoparticles, which were prepared with the soft template of silk fibroin (SF). The optimized immobilization condition is pH6.0, hydrolysis time of 60min, and an enzyme/support ratio of 10.0mg/g. Compared with free papain, the i...
journal_title:International journal of biological macromolecules
pub_type: 杂志文章
doi:10.1016/j.ijbiomac.2018.03.088
更新日期:2018-07-15 00:00:00
abstract::Yellow horn (Xanthoceras sorbifolia Bunge) is a oil-rich, woody deciduous shrub with exceptional economic and ecological values. Basic Helix-Loop-Helix (bHLH) transcription factor (TF) family fulfills crucial biological functions in plant. However, genome-wide survey of the bHLH genes in yellow horn has not been perfo...
journal_title:International journal of biological macromolecules
pub_type: 杂志文章
doi:10.1016/j.ijbiomac.2020.05.253
更新日期:2020-10-01 00:00:00
abstract::Composite gels were prepared from 2% myofibrillar protein (MP) imbedded with native starch (potato or tapioca starch) or their modified starches in 0.6 M NaCl at pH 6.2. The role of native starch (potato or tapioca) and their modified counterparts in the rheology and microstructure of MP gels was evaluated. Dynamic rh...
journal_title:International journal of biological macromolecules
pub_type: 杂志文章
doi:10.1016/j.ijbiomac.2018.06.173
更新日期:2018-10-15 00:00:00
abstract::A hyperbranched polysaccharide, coded as TM3a, was extracted from the Pleurotus tuber-regium sclerotia. TM3a was hybridized with xanthan gum (XG) by chemical crosslinking using sodium trimetaphosphate (STMP) to obtain new hydrogels with self-healing and release-controlled properties. The oscillatory rheological measur...
journal_title:International journal of biological macromolecules
pub_type: 杂志文章
doi:10.1016/j.ijbiomac.2018.09.008
更新日期:2018-12-01 00:00:00
abstract::The polar microenvironment around the reactive Cys283 of rabbit muscle creatine kinase was explored using kinetic analysis of substrates reaction in the presence of modifiers. In the present study, three specific sulphydryl reagents, 5,5'-dithiobis(2-nitrobenzoic acid), 6,6'-dithiodinicotinic acid and 2,2'-dithiodipyr...
journal_title:International journal of biological macromolecules
pub_type: 杂志文章
doi:10.1016/j.ijbiomac.2007.05.004
更新日期:2007-10-01 00:00:00
abstract::Cellulose acetate nanofibrous mats were prepared by electrospunning technique. Positively charged and negatively charged composites were alternately deposited on negatively charged CA mats via layer-by-layer self-assembly technique. The morphology and inhibition rate of samples were investigated by regulating number o...
journal_title:International journal of biological macromolecules
pub_type: 杂志文章
doi:10.1016/j.ijbiomac.2012.10.024
更新日期:2013-02-01 00:00:00
abstract::Colorectal cancer has an overexpression of galectin-3 that is related to cancer progression. A decreased risk of colon cancer can be related to consumption of dietary fibers, but the entire mechanism by which this protection occurs remains unclear. Pectin is a type of dietary fiber that possesses β-galactosides and ca...
journal_title:International journal of biological macromolecules
pub_type: 杂志文章
doi:10.1016/j.ijbiomac.2018.12.191
更新日期:2019-04-01 00:00:00
abstract::Hydrodynamic data, i.e. intrinsic viscosity and sedimentation coefficient, for denatured globular proteins in 6 M guanidinium chloride have been re-analysed in terms of the Yamakawa-Fujii theory of the wormlike cylinder model. Molecular parameters thus obtained ((mean value of R2 0/M) infinity, the Kuhn statistical se...
journal_title:International journal of biological macromolecules
pub_type: 杂志文章
doi:10.1016/0141-8130(91)90078-9
更新日期:1991-08-01 00:00:00
abstract::Photo catalytic action of nano TiO(2) for decomposing of some organic compounds is a well known phenomenon. This can be extended to the application on nano TiO(2) on the desized cotton fabric to decompose the hydrophobic impurities and coloring matters of the fabric. This can be nominating as a replacement for the con...
journal_title:International journal of biological macromolecules
pub_type: 杂志文章
doi:10.1016/j.ijbiomac.2012.02.018
更新日期:2012-05-01 00:00:00
abstract::The purpose of this work was to develop and characterize chitosan-alginate beads for the extended delivery of cefpodoxime proxetil (CFP), to understand the impact of formulation and process parameters on the critical quality attributes (CQAs) using a quality-by-design approach. For this, a study was performed with var...
journal_title:International journal of biological macromolecules
pub_type: 杂志文章
doi:10.1016/j.ijbiomac.2014.05.066
更新日期:2014-08-01 00:00:00
abstract::Acetylated corn starch (ACS) was synthesized by the reaction of native corn starch (NCS) with acetic anhydride (AA) and acetic acid in an aqueous medium in the presence of p-toluenesulfonic acid (PTSA) as a catalyst. The factors that could affect the degree of substitution (DS) of corn starch were investigated which i...
journal_title:International journal of biological macromolecules
pub_type: 杂志文章
doi:10.1016/j.ijbiomac.2013.04.080
更新日期:2013-08-01 00:00:00
abstract::Sodium houttuyfonate analogs (SHAs), CH(3)-(CH(2))(n)-CO-CH(2)-CH(OH)SO(3)Na, (n=6-14) were synthesized and their molecular interactions with renin and angiotensin I converting enzyme (ACE) studied using fluorescence quenching techniques. Unlike renin, inhibition of ACE activity was not directly proportional to the al...
journal_title:International journal of biological macromolecules
pub_type: 杂志文章
doi:10.1016/j.ijbiomac.2007.03.004
更新日期:2007-08-01 00:00:00
abstract::Ultraviolet radiation, an effective sterilizing source, rapidly kills the causative organism (Mycobacterium leprae) of leprosy. But, the reasons behind this quick death are not clearly understood. Also, the impact of UV radiation on the antigen(s) which is/are responsible for the survival of this pathogen is still unk...
journal_title:International journal of biological macromolecules
pub_type: 杂志文章
doi:10.1016/j.ijbiomac.2018.07.151
更新日期:2018-11-01 00:00:00