当前位置： SCI文献检索 > INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES期刊下所有文献 > Molecular α-relaxation process of exopolysaccharides extracted from Nostoc commune cyanobacteria.

Molecular α-relaxation process of exopolysaccharides extracted from Nostoc commune cyanobacteria.

Abstract：

:Broadband dielectric spectroscopy was used to investigate the molecular α-relaxation of the exopolysaccharides (EPS) extracted from Nostoc commune cyanobacteria. The EPS were modified in different ways. EPS were carboxymethylated to obtain carboxymethyl-exopolysaccharides (CEPS). EPS and CEPS were doped with ammonium iodide and 1-butyl-3-methylimidazolium chloride. An α relaxation process was observed for all specimens. The temperature dependence of the relaxation times for pure and doped, EPS and CEPS polymers exhibited non-Arrhenius behavior. This relaxation process was associated with the glass transition of the complex heteropolysaccharides produced by the cyanobacteria. The molecular mobility at the glass transition, Tg, was affected by both the carboxymethylation treatment and the doping. The fragility index also decreased for the doped specimens, which may be attributed to an increase in the mobility of the polymer chains due to the plasticizing effect of the doping agents.

journal_name

Int J Biol Macromol

journal_title

International journal of biological macromolecules

authors

Gonzales KN,Troncoso OP,Torres FG,López D

doi

10.1016/j.ijbiomac.2020.07.268

subject

Has Abstract

pub_date

2020-10-15 00:00:00

pages

1516-1525

eissn

0141-8130

issn

1879-0003

pii

S0141-8130(20)34031-9

journal_volume

161

pub_type

杂志文章

相关文献

INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES文献大全
  • Structure characterization of one polysaccharide from Lepidium meyenii Walp., and its antioxidant activity and protective effect against H2O2-induced injury RAW264.7 cells.

    abstract：:The structural characterization, antioxidant activity and protective effect against H2O2-induced injury RAW264.7 cells of a new polysaccharide (MP1) isolated from Lepidium meyenii Walp. were investigated. The molecular weight was estimated to be 4.67 × 105 Da by HPLC-ELSD analysis. Monosaccharide composition was deter...

    journal_title：International journal of biological macromolecules

    pub_type： 杂志文章

    doi：10.1016/j.ijbiomac.2018.06.117

    authors： Wang W,Zhang F,Li Q,Chen H,Zhang W,Yu P,Zhao T,Mao G,Feng W,Yang L,Wu X

    更新日期：2018-10-15 00:00:00

  • Surface and thermal properties of collagen/hyaluronic acid blends containing chitosan.

    abstract：:The structure and surface properties of binary and ternary blends containing collagen (Coll), hyaluronic acid (HA) and chitosan (Ch) were investigated by contact angle measurements, thermogravimetric analysis (TGA), scanning electron microscopy (SEM) and atomic force microscopy (AFM). Thin films of Coll/HA and Coll/HA...

    journal_title：International journal of biological macromolecules

    pub_type： 杂志文章

    doi：10.1016/j.ijbiomac.2016.07.055

    authors： Lewandowska K,Sionkowska A,Grabska S,Kaczmarek B

    更新日期：2016-11-01 00:00:00

  • Effect of sulfation and partial hydrolysis of polysaccharides from Polygonatum sibiricum on immune-enhancement.

    abstract：:The aqueous polysaccharide from Polygonatum sibiricum was extracted and fractionated using anion-exchange chromatography to obtain F1 fraction. The F1 was chemically sulfated and partially acid-hydrolyzed for the production of its over-sulfated (OS1,2,3) and hydrolyzed (HP1,2,3) derivatives, in which the sulfate conte...

    journal_title：International journal of biological macromolecules

    pub_type： 杂志文章

    doi：10.1016/j.ijbiomac.2018.10.119

    authors： Yelithao K,Surayot U,Park W,Lee S,Lee DH,You S

    更新日期：2019-02-01 00:00:00

  • Surface characteristics of polyurethane elastomers based on chitin/1,4-butane diol blends.

    abstract：:Biodegradable polyurethane elastomers with tunable hydrophobicity were synthesized by step-growth polymerization techniques using poly(epsilon-caprolactone) (PCL) and 4,4'-diphenylmethane diisocyanate (MDI). The prepolymer was extended with different mass ratios of chitin and 1,4-butane diol (BDO). The effect of chiti...

    journal_title：International journal of biological macromolecules

    pub_type： 杂志文章

    doi：10.1016/j.ijbiomac.2008.12.004

    authors： Zia KM,Barikani M,Zuber M,Bhatti IA,Barmar M

    更新日期：2009-03-01 00:00:00

  • PSSARD (2.0): a database server for making flexible queries relating amino acid sequences to main-chain secondary structure conformations for proteins of known three-dimensional structure and certain useful applications.

    abstract：:We have updated the Protein Sequence-Structure Analysis Relational Database (PSSARD) first published in the Int. J. Biol. Macromol. 36 (2005) 259-262 corresponding to 1573 representative protein chains selected from the Protein Data Bank (PDB). In this, the updated and revised PSSARD (Version 2.0), we have included al...

    journal_title：International journal of biological macromolecules

    pub_type： 杂志文章

    doi：10.1016/j.ijbiomac.2006.10.006

    authors： Sridhar S,Babu AV,Guruprasad K

    更新日期：2007-06-01 00:00:00

  • Effect of plasticizers on microstructure, compatibility and mechanical property of hydroxypropyl methylcellulose/hydroxypropyl starch blends.

    abstract：:Polymer film blends of hydroxypropyl methylcellulose (HPMC) and hydroxypropyl starch (HPS) were produced with an incorporation of three different plasticizers, including polyethylene glycol (PEG), glycerol and 1, 2-propylene glycol (PG) respectively, and the influence of these plasticizers were compared and studied by...

    journal_title：International journal of biological macromolecules

    pub_type： 杂志文章

    doi：10.1016/j.ijbiomac.2018.07.064

    authors： Zhang L,Wang XF,Liu H,Yu L,Wang Y,Simon GP,Qian J

    更新日期：2018-11-01 00:00:00

  • Pyrimidine biosynthesis in pathogens - Structures and analysis of dihydroorotases from Yersinia pestis and Vibrio cholerae.

    abstract：:The de novo pyrimidine biosynthesis pathway is essential for the proliferation of many pathogens. One of the pathway enzymes, dihydroorotase (DHO), catalyzes the reversible interconversion of N-carbamoyl-l-aspartate to 4,5-dihydroorotate. The substantial difference between bacterial and mammalian DHOs makes it a promi...

    journal_title：International journal of biological macromolecules

    pub_type： 杂志文章

    doi：10.1016/j.ijbiomac.2019.05.149

    authors： Lipowska J,Miks CD,Kwon K,Shuvalova L,Zheng H,Lewiński K,Cooper DR,Shabalin IG,Minor W

    更新日期：2019-09-01 00:00:00

  • Chromium (VI) detoxification by oxidation and flocculation of exopolysaccharides from Arthrobacter sp. B4.

    abstract：:The exopolysaccharides from Arthrobacter sp. B4 (B4-EPS) exhibited an excellent chromium (VI) (Cr(VI)) removal capability without any pH adjustment, whereby 50mgL(-1) of Cr(VI) could be completely removed by 4gL(-1) of B4-EPS. The kinetics tests revealed that the first-order rate constant was 8.3×10(-5)s(-1) and the o...

    journal_title：International journal of biological macromolecules

    pub_type： 杂志文章

    doi：10.1016/j.ijbiomac.2015.07.013

    authors： Li Y,Li Q,Fengying Y,Bao J,Hu Z,Zhu W,Zhao Y,Lin Z,Dong Q

    更新日期：2015-11-01 00:00:00

  • Three-dimensional nanoporous starch-based material for fast and highly efficient removal of heavy metal ions from wastewater.

    abstract：:The development of advanced adsorbents with fast adsorption rate, simple preparation, low cost, and high adsorption capacity is one of the most important topics for water purification. Herein, a novel and pollution-free adsorbent, three-dimensional nanoporous starch-based nanomaterial (3D-PSN), was prepared via sacrif...

    journal_title：International journal of biological macromolecules

    pub_type： 杂志文章

    doi：10.1016/j.ijbiomac.2020.07.017

    authors： Fang Y,Lv X,Xu X,Zhu J,Liu P,Guo L,Yuan C,Cui B

    更新日期：2020-12-01 00:00:00

  • Mango kernel starch as a novel edible coating for enhancing shelf- life of tomato (Solanum lycopersicum) fruit.

    abstract：:Mango kernel starch (MKS) coatings containing different plasticizers were used to extend the shelf life of tomato. The coating slurry was prepared by gelatinizing 4% mango kernel starch, plasticized with glycerol, sorbitol and their 1:1 mixture (50% of starch weight; db). The samples were kept at room temperature (20°...

    journal_title：International journal of biological macromolecules

    pub_type： 杂志文章

    doi：10.1016/j.ijbiomac.2017.05.057

    authors： Nawab A,Alam F,Hasnain A

    更新日期：2017-10-01 00:00:00

  • Chitosan/Sterculia striata polysaccharides nanocomplex as a potential chloroquine drug release device.

    abstract：:Nanoparticles are produced by means of polyelectrolyte complexation (PEC) of oppositely charged polycationic chitosan (CH) with polyanionic polysaccharide extracted from Sterculia striata exudates (rhamnogalacturonoglycan (RG)-type polysaccharide). The nanoparticles formed with low-molar-mass CH are larger than those ...

    journal_title：International journal of biological macromolecules

    pub_type： 杂志文章

    doi：10.1016/j.ijbiomac.2016.03.070

    authors： Magalhães GA Jr,Moura Neto E,Sombra VG,Richter AR,Abreu CM,Feitosa JP,Paula HC,Goycoolea FM,de Paula RC

    更新日期：2016-07-01 00:00:00

  • Anti-psoriatic and toxicity evaluation of methotrexate loaded chitin nanogel in imiquimod induced mice model.

    abstract：:Methotrexate loaded chitin nanogel (MCNG) was formulated for its topical use in psoriasis. MCNG was characterized by DLS, TEM and FTIR. The MCNG particles were spherical in shape with size of 196±14nm, having surface charge of +9.21±0.42 mv. MCNG exhibited greater swelling and drug release at acidic pH than neutral an...

    journal_title：International journal of biological macromolecules

    pub_type： 杂志文章

    doi：10.1016/j.ijbiomac.2017.10.112

    authors： Panonnummal R,Sabitha M

    更新日期：2018-04-15 00:00:00

  • Detailed toxicity evaluation of β-cyclodextrin coated iron oxide nanoparticles for biomedical applications.

    abstract：:The application of iron oxide nanoparticles [IONPs] in biomedical research is progressively increasing, leading to the rapid development of biocompatible and surface modified IONPs. However, there is still a need of information pertaining to its cellular and acute toxicity profile. This work reports the synthesis of β...

    journal_title：International journal of biological macromolecules

    pub_type： 杂志文章

    doi：10.1016/j.ijbiomac.2017.09.067

    authors： Shelat R,Chandra S,Khanna A

    更新日期：2018-04-15 00:00:00

  • Solvent accessibility studies on polysaccharides.

    abstract：:The solvent accessible surface area (ASA) of the polysaccharides, namely (i) carrageenan (1CAR); (ii) agarose (1AGA); (iii) guaran (GUR); (iv) capsular polysaccharide (1CAP); and (v) hyaluronan (1HUA), have been computed using the solvent accessibility technique of Lee and Richards. The results show that the average v...

    journal_title：International journal of biological macromolecules

    pub_type： 杂志文章

    doi：10.1016/s0141-8130(00)00158-6

    authors： Kaliannan P,Gromiha MM,Elanthiraiyan M

    更新日期：2001-01-10 00:00:00

  • Bicistronic DNA vaccine macromolecule complexed with poly lactic-co-glycolic acid-chitosan nanoparticles enhanced the mucosal immunity of Labeo rohita against Edwardsiella tarda infection.

    abstract：:DNA vaccine is an important tool to elicit both humoral and cellular immunity. Present study investigates mucosal immune response of Labeo rohita (15 ± 04 g) to plasmid DNA (pDNA) vaccine macromolecule complexed with nanoparticles (NPs). Poly lactic-co-glycolic acid (PLGA), Chitosan (Chit) and PLGA-Chit-NPs were synth...

    journal_title：International journal of biological macromolecules

    pub_type： 杂志文章

    doi：10.1016/j.ijbiomac.2020.04.048

    authors： Leya T,Ahmad I,Sharma R,Tripathi G,Kurcheti PP,Rajendran KV,Bedekar MK

    更新日期：2020-08-01 00:00:00

  • The differences between fungal α-glucan synthase determining pullulan synthesis and that controlling cell wall α-1,3 glucan synthesis.

    abstract：:The fungal α-glucan synthases (Agss) are multi-domain proteins catalyzing biosynthesis of cell wall α-1,3-glucan which determines cell wall integrity or fungal pathogenicity and pullulan which is a maltotriosyl polymer made of α-1,4 and α-1,6 bound glucose units. The Agss family can be divided into 11 groups, some of ...

    journal_title：International journal of biological macromolecules

    pub_type： 杂志文章

    doi：10.1016/j.ijbiomac.2020.06.147

    authors： Qi CY,Jia SL,Wei X,Yang G,Chi Z,Liu GL,Hu Z,Chi ZM

    更新日期：2020-11-01 00:00:00

  • Preparation of semi-interpenetrating polymer networks composed of chitosan and poloxamer.

    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-inte...

    journal_title：International journal of biological macromolecules

    pub_type： 杂志文章

    doi：10.1016/j.ijbiomac.2005.12.020

    authors： Kim IY,Yoo MK,Kim BC,Kim SK,Lee HC,Cho CS

    更新日期：2006-02-28 00:00:00

  • A mechanistic investigation on methotrexate-loaded chitosan-based hydrogel nanoparticles intended for CNS drug delivery: Trojan horse effect or not?

    abstract：:Chitosan-based hydrogel nanoparticles provide a higher brain concentration of methotrexate (MTX) following IV administration in comparison with the drug's simple solution. The present study investigates the mechanism of this phenomenon, focusing on the possible role of P-gp. A previously developed MTX containing chito...

    journal_title：International journal of biological macromolecules

    pub_type： 杂志文章

    doi：10.1016/j.ijbiomac.2018.12.093

    authors： Pourtalebi Jahromi L,Moghaddam Panah F,Azadi A,Ashrafi H

    更新日期：2019-03-15 00:00:00

  • Purification, structural characterization and anti-UVB irradiation activity of an extracellular polysaccharide from Pantoea agglomerans.

    abstract：:Extracellular polysaccharide (EPS) produced by Pantoea agglomerans was purified for structural analysis and anti-UVB activity evaluation. The results showed that the EPS comprised of mannose and glucose in a ratio of 3:2. The molecular weight of EPS was estimated as 679 KDa. Fourier transform infrared spectrometry (FT...

    journal_title：International journal of biological macromolecules

    pub_type： 杂志文章

    doi：10.1016/j.ijbiomac.2019.06.191

    authors： Li L,Huang T,Liu H,Zang J,Wang P,Jiang X

    更新日期：2019-09-15 00:00:00

  • The first mitochondrial genome for Phaudidae (Lepidoptera) with phylogenetic analyses of Zygaenoidea.

    abstract：:Phauda flammans Walker belongs to Phaudidae (Lepidoptera), which is a holometabolous and leaf-eating pest that harms trees. So far, there is no mitochondrial (mt) genome reported of Phaudidae. Herein, we sequenced and annotated the complete mt genome of P. flammans representing the first mt genome of Phaudidae and pre...

    journal_title：International journal of biological macromolecules

    pub_type： 杂志文章

    doi：10.1016/j.ijbiomac.2020.01.307

    authors： Zhang R,Li J,Geng S,Yang J,Zhang X,An Y,Li C,Cui H,Li X,Wang Y

    更新日期：2020-04-15 00:00:00

  • Characterization of α-D-glucan produced by a probiont Enterococcus hirae KX577639 from feces of south Indian Irula tribals.

    abstract：:Exopolysaccharide (EPS) producing probiotic strain Enterococcus hirae KX577639 were isolated from the feces of South Indian Irula tribes. EPS yield was 18.57 g/L (dry weight) at 48 h in 2% sucrose supplemented MRS medium. TLC and GC-MS analysis confirmed the presence of predominant glucose monomer indicating the homop...

    journal_title：International journal of biological macromolecules

    pub_type： 杂志文章

    doi：10.1016/j.ijbiomac.2018.07.015

    authors： Jayamanohar J,Devi PB,Kavitake D,Rajendran S,Priyadarisini VB,Shetty PH

    更新日期：2018-10-15 00:00:00

  • Sorghum straw: Pulping and bleaching process optimization and synthesis of cellulose acetate.

    abstract：:The process employed for the pulping and bleaching of sorghum straw was optimized prior to the synthesis of cellulose acetate. A 22 factorial central composite design was carried out. The variables considered were cooking time (1.5 to 2.5 h) and dilute alkali concentration (0.75 to 1.25%) for the pulping and bleaching...

    journal_title：International journal of biological macromolecules

    pub_type： 杂志文章

    doi：10.1016/j.ijbiomac.2019.05.014

    authors： Andrade Alves JA,Lisboa Dos Santos MD,Morais CC,Ramirez Ascheri JL,Signini R,Dos Santos DM,Cavalcante Bastos SM,Ramirez Ascheri DP

    更新日期：2019-08-15 00:00:00

  • Preparation and evaluation of β-glucan hydrogel prepared by the radiation technique for drug carrier applications.

    abstract：:β-Glucan can provide excellent environment to apply to drug carrier due to its immunological and anti-inflammatory effect. Minocycline hydrochloride (MH) has excellent oral bioavailability pharmacological properties. Specifically, MH is effectively absorbed into the gingiva for periodontal disease treatment. In this s...

    journal_title：International journal of biological macromolecules

    pub_type： 杂志文章

    doi：10.1016/j.ijbiomac.2018.06.068

    authors： Park JS,Lim YM,Baik J,Jeong JO,An SJ,Jeong SI,Gwon HJ,Khil MS

    更新日期：2018-10-15 00:00:00

  • Inhibition of tau aggregation and associated cytotoxicity on neuron-like cells by calycosin.

    abstract：:In this study, the in vitro assembly of tau and anti-amyloidogenic properties of one naturally occurring phytoestrogen, calycosin, was investigated by spectroscopic techniques including ThT and ANS fluorescence, CD, Congo red absorbance as well as TEM analysis. Afterwards the cytotoxicity of different amyloid species ...

    journal_title：International journal of biological macromolecules

    pub_type： 杂志文章

    doi：10.1016/j.ijbiomac.2020.12.030

    authors： Zhenxia Z,Min L,Peikui Y,Zikai C,Yaqun L,Junli W,Fenlian Y,Yuzhong Z

    更新日期：2020-12-07 00:00:00

  • Aspergillus niger lectin elicits MyD88 dependent proliferation and apoptosis at lower and higher doses in immortalized human corneal epithelial cells leading to pathogenesis.

    abstract：:An L-fucose lectin, ANL from the corneal smears of a mycotic keratitis patient was reported earlier. Interaction of ANL with immortalized Human Corneal Epithelial Cells (HCECs) was studied in order to assign the role of ANL in pathogenesis. ANL showed strong binding to HCECs which could be blocked by L-fucose and muci...

    journal_title：International journal of biological macromolecules

    pub_type： 杂志文章

    doi：10.1016/j.ijbiomac.2020.10.020

    authors： Jagadeesh N,Belur S,Chachadi VB,Roy S,Inamdar SR

    更新日期：2020-12-15 00:00:00

  • Optimized antioxidant peptides fractions preparation and secondary structure analysis by MIR.

    abstract：:The soybean protein was hydrolyzed by Alcalase Food grade (FG) 2.4 L and the optimal hydrolysis parameters of strongest antioxidant capacity of peptides were obtained using response surface methodology (RSM). The effects of reaction temperature, pH value and ratio of enzyme/soybean protein powder ([E/S]) on the 2,2-di...

    journal_title：International journal of biological macromolecules

    pub_type： 杂志文章

    doi：10.1016/j.ijbiomac.2013.04.008

    authors： Lin S,Wang J,Zhao P,Pang Y,Ye H,Yuan Y,Liu J,Jones G

    更新日期：2013-08-01 00:00:00

  • Inhibitory kinetics and bioactivities of Nuciferine and Methyl Ganoderate on Mucor miehei lipase and 3T3-L1 preadipocytes.

    abstract：:In this study, inhibitory kinetics of Nuciferine and Methyl Ganoderate extrated from Lotus Leaves and Ganoderma lucidum on Mucor miehei Lipase were studied first. The molecular structure of Nuciferine and Methyl Ganoderate were determined. The inhibitory effects of two extracts on lipase were reversible, with the IC50...

    journal_title：International journal of biological macromolecules

    pub_type： 杂志文章

    doi：10.1016/j.ijbiomac.2020.09.127

    authors： Liu XT,Liu TT,Xu HL,Chen QX,Wang Q

    更新日期：2020-11-15 00:00:00

  • A connection between antimicrobial properties of venom peptides and microbial ATP synthase.

    abstract：:Venom peptides anoplin, cupiennin 1a, latarcin 1, latarcin 3a, latarcin 5, melittin, and pandinin 2 are known to have antibacterial properties. In the current study, we examined whether the antimicrobial properties of these venom peptides have any connection to the binding and inhibition of bacterial ATP synthase. Ven...

    journal_title：International journal of biological macromolecules

    pub_type： 杂志文章

    doi：10.1016/j.ijbiomac.2018.07.146

    authors： Syed H,Tauseef M,Ahmad Z

    更新日期：2018-11-01 00:00:00

  • Thyroxine-loaded chitosan/carboxymethyl cellulose/hydroxyapatite hydrogels enhance angiogenesis in in-ovo experiments.

    abstract：:Angiogenesis is one of the most important processes in repair and regeneration of many tissues and organs. Blood vessel formation also play a major role in repair of dental tissue(s) after ailments like periodontitis. Here we report the preparation of chitosan/carboxymethyl cellulose/hydroxyapatite based hydrogels, lo...

    journal_title：International journal of biological macromolecules

    pub_type： 杂志文章

    doi：10.1016/j.ijbiomac.2019.10.043

    authors： Malik MH,Shahzadi L,Batool R,Safi SZ,Khan AS,Khan AF,Chaudhry AA,Rehman IU,Yar M

    更新日期：2020-02-15 00:00:00

  • Co-immobilization of glucose oxidase and catalase in silica inverse opals for glucose removal from commercial isomaltooligosaccharide.

    abstract：:In this work, glucose oxidase (GOD) and catalase (CAT) were co-immobilized on novel silica inverse opals (IO-SiO2) through sol-gel process. The immobilized bi-enzyme system named GOD/CAT@IO-SiO2 was successfully fabricated and characterized. Morphology characterization indicated that GOD/CAT@IO-SiO2 had hierarchical p...

    journal_title：International journal of biological macromolecules

    pub_type： 杂志文章

    doi：10.1016/j.ijbiomac.2017.10.074

    authors： Zhao B,Zhou L,Ma L,He Y,Gao J,Li D,Jiang Y

    更新日期：2018-02-01 00:00:00