Abstract：
:In the present study, a new method for the synthesis of the open cell flexible polyurethane foams (PUFs) was developed by using starch powder and the modification of closed cell foam formulation. Starch is the second largest polymeric carbohydrate as a macromolecule on this planet with a large number of glucose units. Copper oxide nanoparticles (CuO NPs) were synthesized by thermal degradation method at different temperatures of 400, 600 and 800 °C as antimicrobial agents. The antimicrobial activity of CuO NPs and commercial CuO powder against the main causes of hospital infections were tested. CuO600 was the most effective antimicrobial agent and enhanced polymer matrix tensile strength with starch powder as new polyurethane foams (PUFs) cell opener with high tensile strength. The effects of parameters on tensile strength were optimized using response surface methodology (RSM). CuO NPs and PUF had optimal conditions and were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FT-IR). Foam synthesized at the optimal conditions had an open cell structure with high tensile strength and efficient antimicrobial activity that made them suitable to be used as an antimicrobial hospital mattress to control hospital infections.
journal_name
Int J Biol Macromoljournal_title
International journal of biological macromoleculesauthors
Ashjari HR,Dorraji MSS,Fakhrzadeh V,Eslami H,Rasoulifard MH,Rastgouy-Houjaghan M,Gholizadeh P,Kafil HSdoi
10.1016/j.ijbiomac.2018.01.137subject
Has Abstractpub_date
2018-05-01 00:00:00pages
1076-1082eissn
0141-8130issn
1879-0003pii
S0141-8130(17)34569-5journal_volume
111pub_type
杂志文章abstract：:We report here the self-assembled structures of polyelectrolyte complexes (PECs) of polyanionic sodium alginate with the polycationic chitosan at room temperature. The PECs prepared at different pH values exhibited two distinct morphologies. The chitosan-alginate PECs self-assembled into the fibrous structure in a low...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2018.03.075
更新日期：2018-07-15 00:00:00
abstract：:Inadequate disposition and long period for degradation of Petroleum-derived polymers promote damages in the environment, which could be minimized by the use of biodegradable polymers such as starch and cellulose. Films of thermoplastic corn starch (TPS) and bacterial cellulose (BC) were used to produce sandwich panel ...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2020.11.156
更新日期：2021-01-15 00:00:00
abstract：:The amino acid sequences of chick and slime mould alpha-actinin each contain four repeats of approximately 122 residues. These repeats are homologous to the 18-22 repeats, each of approximately 106 residues, found in the alpha and beta subunits of spectrin and fodrin, and to the multiple repeats of approximately 110 r...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/0141-8130(89)90047-0
更新日期：1989-04-01 00:00:00
abstract：:In this study, glucose oxidase and polyphenol oxidase were immobilized in conducting polymer matrices; polypyrrole and poly(N-(4-(3-thienyl methylene)-oxycarbonyl phenyl) maleimide-co-pyrrole) via electrochemical method. Fourier transform infrared and scanning electron microscope were employed to characterize the copo...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2006.12.005
更新日期：2007-06-01 00:00:00
abstract：:Hypoxia inducible factor 1 alpha (HIF-1α) is a key regulator of the genes involved in the cellular response to hypoxia. This study aims to determine the HIF-1α gene polymorphism and its association with protein expression in diabetic subjects with and without diabetic foot ulcers (DFU). A total of 529 patients with T2...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2018.08.011
更新日期：2018-11-01 00:00:00
abstract：OBJECTIVE:We aimed to explore the effect of Sappanone A on neurologic damage induced by hypoxia. METHODS:PC-12 cells were pre-treated with Sappanone A and were simulated by hypoxia. miRNA transfection was performed to overexpress or suppress the expression of miR-15a in PC-12 cells. Cell viability, apoptosis, migratio...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2018.11.002
更新日期：2019-02-15 00:00:00
abstract：:Fish are reported to exhibit chitinase activity in the stomach. Analyses of fish stomach chitinases have shown that these enzymes have the physiological function of degrading chitinous substances ingested as diets. Osteichthyes, a group that includes most of the fishes, have several chitinases in their stomachs. From ...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章,评审
doi：10.1016/j.ijbiomac.2017.03.118
更新日期：2017-11-01 00:00:00
abstract：:The Ca(2+)-induced conformational changes in calmodulin (CaM) were monitored by Fourier transform infrared spectroscopy (FT-IR) at different molar ratios of Ca(2+) to CaM. The results show that these changes occur in two distinctive transitions. The first transition involves significant changes in the overall secondar...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2013.02.004
更新日期：2013-05-01 00:00:00
abstract：:In this study, a novel and efficient aptasensor based on immobilization of thiol terminated prostate specific antigen (PSA) binding DNA aptamer onto Au nanoparticles/fullerene C60-chitosan-ionic liquid/multiwalled carbon nanotubes/screen printed carbon electrode has been fabricated for ultrasensitive aptasensing of bi...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2019.01.012
更新日期：2019-04-01 00:00:00
abstract：:The effects of a polysaccharide (DAP) from the roots of Dipsacus asper on renal complication in streptozotocin (STZ)-induced diabetic rats were investigated in the present study. Administration of DAP (100 and 300 mg/kg) for 4 weeks significantly decreased the fasting blood glucose (FBG) and glycosylated hemoglobin (H...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2019.04.069
更新日期：2019-07-15 00:00:00
abstract：:Lacquer polysaccharide (LP) from the sap of the lac tree (Rhus vernicifera) was degraded by hydrochloric acid. The molecular weights (M(w)) of hydrolysis products of lacquer polysaccharide (LPD) decreased with the increase of the reaction temperature. Sulfated derivatives (LPDSs) of LPDs were prepared by the reaction ...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2009.11.010
更新日期：2010-03-01 00:00:00
abstract：:The purpose of this study was to develop a promising burns dressing. Chiosan (CS) has been widely used as biomaterials, in combination with marine peptides (MPs) extracted from seawater cultured Tilapia, the newly developed material Chitosan-Marine Peptides hydrogels (CSMP) in this study showed antibacterial activity,...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2018.01.217
更新日期：2018-06-01 00:00:00
abstract：:This review article summarises the possible mechanisms of the protein-ligand interaction, folding, misfolding, aggregation and inhibition of protein aggregates. Under certain stressed condition the folding process deviates from its path and results into misfolding and aggregation of proteins. So aggregates have to be ...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章,评审
doi：10.1016/j.ijbiomac.2017.07.185
更新日期：2018-01-01 00:00:00
abstract：:Aggregation properties of Gelatin chains in neutral aqueous solutions, are reported in the temperature range T = 35-60 degrees C, from the measured intrinsic viscosity [eta], diffusion coefficient, D(o), molecular weight Mw, and radius of gyration (Rg) data. Gelatin chains doubled their size as the solution was cooled...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/s0141-8130(98)00003-8
更新日期：1998-07-01 00:00:00
abstract：:Bicalutamide (BCT), a drug used in the treatment of prostate cancer, antagonises the actions of androgens, at the receptor level, thereby inhibiting the growth of prostate tumours. Alpha-2-macroglobulin (α2M), a pan-proteinase inhibitor, inhibits proteinase, regardless of specificity and catalytic mechanism. α2M is de...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2018.08.117
更新日期：2018-12-01 00:00:00
abstract：:The current study involves development of novel tamarind seed gum - alginate complex microspheres for sustained release of dalfampridine by using Central Composite design in combination with response surface methodology. Polymer ratio (A), agitation speed (B) and concentration of CaCl2 (C) were selected as independent...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2019.11.203
更新日期：2020-02-01 00:00:00
abstract：:Nanomaterials have great potential for use in various fields, due to their unique properties. In order to explore the bioactivity of nanochitin on tobacco, the effects of nanochitin suspensions on tobacco seed germination, seedling growth, and synergistic effects with fungicides were studied in indoor and field trials...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2017.02.069
更新日期：2017-06-01 00:00:00
abstract：:Extracellular alkaline protease producing salt tolerant alkaliphilic actinobacteria, Nocardiopsis xinjiangensis strain OM-6 was isolated from Okha Madi (OM) site of coastal Gujarat, India. The purified protease was stable even at 70°C in 100mM Ca2+ with Kd=20×10-3 and t1/2=34min. The activation energies (E), enthalpy ...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2018.02.157
更新日期：2018-07-01 00:00:00
abstract：:The aim of this work was to evaluate the possibility of control of wilt disease caused by Fusarium andiyazi through chitosan (CS) and chitosan nanoparticles (CNPs). In the present study, the expression pattern of pathogenesis-related (PR) proteins genes such as PR-1, PR-2 (β-1,3-glucanase), PR-8 (chitinase), and PR-10...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2018.12.167
更新日期：2019-03-15 00:00:00
abstract：:The present study deals with mass spectrometric investigation to characterize the nature of proinsulin in inclusion bodies. Various derivatives of human proinsulin were cloned, expressed in E. coli and inclusion bodies prepared under weak acidic conditions (pH 6.5), which protected the native thiols. Non-reductive PAG...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2019.07.131
更新日期：2019-10-15 00:00:00
abstract：:The binding properties of poly-L-lysine and chitosan to alginate have been evaluated quantitatively and compared. Poly-L-lysine bound to alginate hydrogel more rapidly than chitosan as poly-L-lysine has a smaller molar hydrodynamic volume. In addition, poly-L-lysine showed a much higher binding capacity (6.14:1) for a...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2015.12.008
更新日期：2016-03-01 00:00:00
abstract：:Biocompatible and biodegradable gelatin is a good candidate bioink for use in 3D bioprinting technologies, but viscous gelatin solution has a low printability. In order to improve the poor printability of gelatin, we optimized the rheological properties of gelatin solution. 3D gelatin scaffolds were then cross-linked ...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2019.05.207
更新日期：2019-08-15 00:00:00
abstract：:Temporomandibular disorder is a clinical painful condition in the temporomandibular joint (TMJ) region. The purified sulfated polysaccharide from the green marine algae Caulerpa racemosa (Cr) has provided anti-inflammatory and antinociceptive activity. This study evaluated these effects on a TMJ hypernociception model...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2020.01.272
更新日期：2020-05-01 00:00:00
abstract：:Lignin, an underutilized by-product from chemical pulping of wood, can be modified enzymatically through oxidation by laccase. However, little is known about the molecular details surrounding the cross-linking which is a result of the oxidation. To reduce this lack of knowledge, we used oxygen consumption rate data, p...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2017.07.061
更新日期：2017-12-01 00:00:00
abstract：:In this study, iron magnetic nanoparticles capped with fluorescent calixarene derivatives (Fe3O4@Calix-2 and Fe3O4@Calix-3) were prepared in one-step using coprecipitation of Fe(II) and Fe(III) in basic solution. Different techniques were used to characterize the synthesized magnetic nanoparticles, such as Fourier Tra...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2019.04.182
更新日期：2019-07-15 00:00:00
abstract：:To be used as a carrier of 68Ga radioisotope for possible blood pool imaging studies, dialdehyde dextran thiosemicarbazone (DADTSC) Schiff base polymer with different thiosemicarbazone contents (TSCC) = 0.93, 2.43, and 3.4 mmol/g were synthesized and characterized by FT-IR, GPC, and CHNS. Although they were successful...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2018.12.133
更新日期：2019-03-15 00:00:00
abstract：:There are different clotting factors present in blood, carries the clotting cascade and excessive bleeding may cause a deficiency in the clotting Diagnosis of this deficiency in clotting drastically reduces the potential fatality. For enabling a sensor to detect the clotting factors, suitable probes such as antibody a...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章,评审
doi：10.1016/j.ijbiomac.2018.05.084
更新日期：2018-09-01 00:00:00
abstract：:Chitin/alginate (CA) blend membranes were successfully prepared from 8 wt% NaOH/4 wt% urea aqueous solution by coagulating with 0.5M CaCl(2) aqueous solution containing 5 wt% HCl. Morphology, mechanical properties, thermal stability, and antimicrobial effects of the membranes were investigated by scanning electron mic...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2012.08.030
更新日期：2012-12-01 00:00:00
abstract：:Bacterium Bacillus sp. SS105, isolated from Free Air CO2 Enriched (FACE) soil was previously screened for carbonic anhydrase activity and CO2 sequestration. In this study, strain was selected to amplify carbonic anhydrase encoding genes. The CA genes from Bacillus sp. SS105 were found to be homologous with beta‑carbon...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2019.03.082
更新日期：2019-06-15 00:00:00
abstract：:MicroRNAs (miRNAs) are key regulators in the development and progression of osteosarcoma (OS). Based on our previous microarray data, we found that miR-335 expression was downregulated in OS tissue relative to normal tissue. Herein, we further found that miR-335 was downregulated in OS cell lines relative to the osteo...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2019.04.016
更新日期：2019-07-15 00:00:00
