Abstract：
:The effect of gamma irradiation, with doses from 10(2) to 10(3) kGy, on the dielectric relaxation time of solid-state collagen was studied. Temperature measurements of the relaxation time were made over a range of frequency of the electric field from 10(1) to 10(5) Hz and at temperatures from 298 to 480 K. The samples contained 0.06 g H2O/g dry collagen. The dependencies obtained indicate that values for the relaxation time decrease with increasing temperature for all samples of collagen. In addition, an increase in the irradiation dose resulted in a decreased relaxation time for collagen at each temperature studied. These changes can be interpreted on the basis of proton conduction processes. Such effects occurring in a heterogeneous medium such as a collagen-water system are caused by the localized jumping of free protons between neighbouring sites. In the system of irradiated collagen studied, the sites are formed by structural water molecules, the products of its radiolysis and also by elements of the damaged first-order structure of the collagen macromolecule.
journal_name
Int J Biol Macromoljournal_title
International journal of biological macromoleculesauthors
Marzec Edoi
10.1016/0141-8130(95)93510-5subject
Has Abstractpub_date
1995-02-01 00:00:00pages
3-6issue
1eissn
0141-8130issn
1879-0003pii
0141813095935105journal_volume
17pub_type
杂志文章abstract：:Chitosan (300 kDa) was degraded by cellulase to chitosans with molecular weights (MWs) of 156, 72, 7.1, and 3.3 kDa and a chitooligosaccharide mixture (COS). Effects of these on NO secretion, cytokine production, and mitogen-activated protein kinase pathways in lipopolysaccharide (LPS)-induced murine RAW 264.7 macroph...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2019.02.066
更新日期：2019-06-15 00:00:00
abstract：:The molecular weight and chain conformation of an exopolysaccharide (EPS), S2, from Lactobacillus rhamnosus KF5 were determined by size-exclusion chromatography combined with multi-angle laser light scattering (SEC-MALLS), dynamic light scattering (DLS), viscometry and atomic force microscopy (AFM). The weight-average...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2014.10.015
更新日期：2015-01-01 00:00:00
abstract：:A chitosan-glutaraldehyde crosslinked uricase was immobilized onto Prussian blue nanoparticles (PBNPs) absorbed onto carboxylated multiwalled carbon nanotube (c-MWCNT) and polyaniline (PANI) layer, electrochemically deposited on the surface of Au electrode. The nanohybrid-uricase electrode was characterized by scannin...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2011.10.002
更新日期：2012-01-01 00:00:00
abstract：:To explore a valuable new enzyme method that effectively changes the molecular structure and absorption property of potato and sweet potato starch granules, the common combination of α-amylase (AA) and glucoamylase (GA), namely AA → GA (common method as contrast), the combination of glycosyltransferase (GT) and GA, na...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2019.09.164
更新日期：2020-02-01 00:00:00
abstract：:Starch molecular structural effects in duckweed (Lemna minor and Landoltia punctata) controlling in vitro enzymatic degradation kinetics was studied. The molecular size distributions of fully-branched starches and the chain length distributions (CLDs) of enzymatically debranched duckweed starches were obtained using s...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2019.07.206
更新日期：2019-10-15 00:00:00
abstract：:Crosslinked chitosan beads were grafted with N-vinyl-2-pyrrolidone (NVP) using ammonium persulfate (APS) as free radical initiator. Important variables on graft copolymerization such as temperature, reaction time, concentration of initiator and concentration of monomer were optimized. The results revealed optimum cond...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2017.09.061
更新日期：2018-02-01 00:00:00
abstract：:Polymer microbeads (MBs) for scrubbing additives have generally been prepared from non-biodegradable synthetic polymers. The worldwide pollution of the marine ecosystem by microplastics urgently demands novel environment-friendly MBs. In this study, Ca-alginate MBs were fabricated by electrospraying an aqueous alginat...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2019.04.058
更新日期：2019-07-15 00:00:00
abstract：:Oxidative stress is considered to involve cell death in severe pulmonary diseases like idiopathic pulmonary fibrosis (IPF). Polysaccharide FMP-1 from Morchella esculenta can exert significant antioxidant activity. However, its effects on alveolar epithelial cells remain unperceived. Herein, the effects of FMP-1 agains...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2018.08.148
更新日期：2018-12-01 00:00:00
abstract：:Novel Selenium nanoparticles (SeNPs) were developed using beta-lactoglobulin (Blg) as a stabilizer in redox systems of selenite and ascorbic acid in this study. Particle size, morphology, stability, and in vitro biological activity of synthesized Blg stabilized selenium nanoparticles (Blg-SeNPs) were characterized by ...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2017.09.117
更新日期：2018-02-01 00:00:00
abstract：:The aim of the present study was to evaluate the anti-inflammatory ability of novel indigenous probiotic Lactobacillus fermentum MCC 2759, L. fermentum MCC 2760 and Lactobacillus delbrueckii MCC 2775 in a carrageenan induced acute inflammatory paw edema model. Probiotic cultures were administered to male Wistar rats v...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2015.08.044
更新日期：2015-11-01 00:00:00
abstract：:A novel diethoxy phosphoryl chitosan was successfully synthesized via Atherton-Todd reaction of chitosan with diethyl phosphite, and the characterization was carried out by FT IR, NMR, ICP, XRD, TG and SEM, respectively. The FT IR, (13)C NMR and (31)P NMR results showed that diethoxy phosphoryl group was grafted onto ...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2010.06.014
更新日期：2010-11-01 00:00:00
abstract：:Timely antibacterial treatment of wounds reduces the probability of wound infection and promotes wound healing. However, the materials used to treat wounds often fail to provide both sterilization (especially for super bacteria) and moisture, and some may even cause secondary injury to the wound. In this study, gold n...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2020.01.190
更新日期：2020-04-01 00:00:00
abstract：:Polyhydroxyalkanoates are a fascinating group of biological polymers, which have attracted extensive attention. An effectual PHB accumulating Bacillus cereus strain VIT-SSR1 was isolated from industrial effluent contaminated site. Plackett-Burman design was used to screen the critical factors affecting PHA production....
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2019.05.163
更新日期：2019-08-15 00:00:00
abstract：:For the first time, the effect of two novel designed pentapeptides on amyloid growth of human insulin using combined biophysical, microscopic, cell viability and computational approaches. Collective experimental data from ThT, ANS, and TEM demonstrate that in spite of having contrasting features, both peptides can eff...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2019.11.222
更新日期：2020-01-15 00:00:00
abstract：:Time-dependent intermolecular sulphydryl-disulphide interchange involving beta-lactoglobulin adsorbed at the oil-water interface in n-tetradecane-in-water emulsions (10 wt% oil, 0.5 wt% protein, pH 7.0) has been investigated using sodium dodecyl sulphate-polyacrylamide gel electrophoresis (SDS-PAGE). While only monome...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/0141-8130(91)90006-g
更新日期：1991-02-01 00:00:00
abstract：:Snakebite envenoming is a tropical disease neglected worldwide. In Brazil, the Crotalus durissus cascavella (CDC) snake belongs to a genus with venom of highest lethality. A search for new immunoadjuvants aimed to expand the therapeutic alternatives to improve vaccines and antivenom. This approach proposed to produce ...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2018.09.203
更新日期：2018-12-01 00:00:00
abstract：:Snail mucus is an attractive natural substance, which is increasingly used in cosmetic creams and syrups thanks to its emollient, moisturizing, protective and reparative properties. The aim of the present study was to explore the physicochemical properties of chitosan-based films added with snail mucus extracted from ...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2019.11.230
更新日期：2020-01-15 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：: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 the present study, iminodiacetic acid (IDA)-modified kenaf fiber, K-IDA formed by the chemical modification of plant kenaf biomass was tested for its efficacy as a sorbent material towards the purification of waste water. The K-IDA fiber was first characterized by the instrumental techniques like Fourier transform ...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2018.02.035
更新日期：2018-06-01 00:00:00
abstract：:Dermatophagoides farinae is a major exogenous allergen. Its ability to tolerate adverse external temperatures makes it responsible for widespread occurrence of allergies. Heat shock protein (HSP), a recognized temperature stress response gene, but its role in D. farinae remained unclear. Here, we performed a comprehen...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2019.12.014
更新日期：2020-02-01 00:00:00
abstract：:Nowadays, for the industrial implementations, especially in the area of organic synthesis, immobilized enzymes are preferred over their soluble forms. Present study aimed to find fast, cost-efficient, and effective way of lipase immobilization for the use in organic media. Lipase from Aspergillus sp. (Resinase A 2X) w...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2017.11.010
更新日期：2018-03-01 00:00:00
abstract：:Noncompetitive carbon sources such as algae are unconventional and promising raw material for sustainable biofuel production. The capability of one marine bacterium, Saccharophagus degradans 2-40 to degrade red seaweed Gelidium amansii for production of polyhydroxyalkanoates (PHA) was evaluated in this study. S. degra...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2017.11.084
更新日期：2018-04-01 00:00:00
abstract：:Conjugation of various arginine-rich peptide sequences to vectors based on 10 kDa polyethylenimine (PEI) and its hydrophobic derivative (hexanoate-PEI) was investigated as a strategy for improving pDNA and siRNA transfection activities. Six different arginine-histidine (RH) sequences and two arginine-serine (RS) seque...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2013.05.001
更新日期：2013-09-01 00:00:00
abstract：:Mushrooms are renewable natural gift for humankind, furnished with unique taste, flavor and medicinal properties. For the last few decades study of mushroom polysaccharides has become a matter of great interest to the researchers for their immunomodulating, antimicrobial, antioxidant, anticancer, and antitumor propert...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章,评审
doi：10.1016/j.ijbiomac.2021.01.081
更新日期：2021-01-16 00:00:00
abstract：:Ganoderma atrum polysaccharide (PSG-1), a main polysaccharide from Ganoderma atrum, possesses potent antioxidant capacity and cardiovascular benefits. The aim of this study was to investigate the role of PSG-1 in oxidative stress and apoptosis in human umbilical vein endothelial cells (HUVECs) under anoxia/reoxygenati...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2017.01.071
更新日期：2017-05-01 00:00:00
abstract：:The aim of the paper was to investigate the ability of an eco-friendly luminescent xerogel prepared by chitosan crosslinking with a phenothiazine luminogen to detect and remove heavy metals. Its ability to give a divergent morphological and optical response towards fifteen environmental relevant metals was investigate...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2020.07.232
更新日期：2020-11-01 00:00:00
abstract：:Starch is a natural polysaccharide with reasonable biodegradable properties, which grafted with vinyl monomers through different initiators to be applied in enhanced oil recovery (EOR) techniques. Several authors stated about starch modification through copolymerization and grafting of different monomers, however, the...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2018.11.056
更新日期：2019-02-15 00:00:00
abstract：:In order to improve mechanical properties and biomedical behavior of chitosan-based polymeric films, the effect of nanocrystalline cellulose (NCC) and calcium peroxide (CP) particles on the properties of polymeric films based on chitosan (CS) and gelatin (GL) were investigated in this study. The films were characteriz...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2019.04.159
更新日期：2019-07-15 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
