Abstract：
:Ultracentrifugation was used to clarify seven amylose fractions obtained by aqueous leaching of corn starch by 5 degrees C steps over a temperature range of 65-95 degrees C. Each fraction was characterized by its hydrodynamic radius R-(H), as determined by dynamic light scattering--and by the macromolecular features (M-(W), the weight-average molecular weight; R-(G), the z-average gyration radius, MWD, the molecular weight distribution) determined by size-exclusion chromatography coupled on line with multi-angle laser light scattering using 0.1 M KOH as solvent. This procedure provided new insights into the leaching process. In particular, a key temperature (85 degrees C) was noted, after which amylose M-(W) increased markedly from 8 x 10(4) - 1.4 x 10(5) to 3 x 10(5) - 3.5 x 10(5) g.mol(-1). Molecular weight dependences of macromolecular sizes were consistent with the behaviour of an expanded chain in good solvent with in particular a hydrodynamic coefficient v within the 0.6-0.7 range for the R(G) approximately M(v) relation. Finally, a method was developed to fit corresponding experimental molecular weight distributions with mathematical distributions of two populations. This enable us to determine that the molecular weight distribution for each leached amylose fraction was at least bimodal and to calculate the corresponding M(W) to each component.
journal_name
Int J Biol Macromoljournal_title
International journal of biological macromoleculesauthors
Roger P,Colonna Pdoi
10.1016/0141-8130(96)01101-4subject
Has Abstractpub_date
1996-07-01 00:00:00pages
51-61issue
1eissn
0141-8130issn
1879-0003pii
0141813096011014journal_volume
19pub_type
杂志文章abstract：:Biodegradable starch nanocrystals prepared by an acid treatment process were modified through crosslinking modification using citric acid as reactant by a dry reaction method. The occurrence of crosslinking modification was evaluated by Fourier transform infrared spectroscopy and swelling degree. X-ray diffraction, we...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2016.06.082
更新日期：2016-10-01 00:00:00
abstract：:The present work reports the successful preparation, thermal and mechanical characterization of high performance films of Na(+) montmorillonite (MMT)/graphene oxide (GO)/chitosan (CS) composite using simple solution mixing evaporation method. The formations of films were verified by Fourier transform infrared (FT-IR) ...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2015.05.055
更新日期：2015-08-01 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：: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：:Sulfated polysaccharides from Crassostrea gigas (SCGP) were successfully prepared using chlorosulfonic acid-pyridine method. The structure of SCGP was determined by high performance liquid chromatography (HPLC), Fourier transform infrared spectrometry (FT-IR) and nuclear magnetic resonance (NMR). The results of spectr...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2019.02.053
更新日期：2019-05-15 00:00:00
abstract：:The unperturbed dimensions of poly-alpha-D-galacturonic acid (PGA) as a function of the degree of polymerization (n) and degree of ionization (%GalA-) have been determined by molecular mechanics and Monte Carlo methods. Chain extensions appear to depend substantially on contributions arising from local redistributions...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/0141-8130(95)92688-m
更新日期：1995-06-01 00:00:00
abstract：:Identification of biomarker proteins in the retina and retinal pigment epithelium (RPE) under oxidative stress may imply new insights into signaling mechanisms of retinal degeneration at the molecular level. Proteomic data from an in vivo mice model in constant light and an in vitro oxidative stress model are compared...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2010.08.018
更新日期：2010-12-01 00:00:00
abstract：:Natural polymer hydrogels are expected to be promising biomaterial because of its excellent biocompatibility and biodegradability, but they are soft and easily broken. Herein, the poly (γ-glutamic acid) (γ-PGA)/bacterial cellulose (BC) composite hydrogels with excellent mechanical properties were constructed by introd...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2020.12.148
更新日期：2021-02-15 00:00:00
abstract：:In this study, polyvinyl alcohol (PVA)-degrading bacteria were screened from sludge samples using PVA as a sole source of carbon. A novel strain was obtained and identified as Bacillus niacini based on the analysis of a partial 16S rDNA nucleotide sequence and morphological characteristics. PVA-degrading enzyme (PVAas...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2018.11.204
更新日期：2019-03-01 00:00:00
abstract：:In this study we report the ability of reduced and non-reduced graphene oxide-based nanomaterials (GONs), modified with variable alkyl chain length and terminal functional groups, to act as effective scaffolds for the immobilization of cytochrome c (cyt c) using different immobilization procedures. The GONs/cyt c conj...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2015.12.023
更新日期：2016-03-01 00:00:00
abstract：:Bacteriocins are bioactive antimicrobial peptides synthesized in the ribosome of numerous bacteria and released extracellularly. Bacteriocins have the ability to kill or inhibit the growth of prokaryotes and could potentially be useful against pathogens and antibiotic-resistant strains of bacteria. The antimicrobial m...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章,评审
doi：10.1016/j.ijbiomac.2018.05.233
更新日期：2018-10-01 00:00:00
abstract：:In this study, the microbiological, physicochemical, and flavor changes of turbot (Scophthalmus maximus) coated with a composite active coating of locust bean gum (LBG) and sodium alginate (SA) supplemented with daphnetin emulsions (0.16, 0.32, 0.64 mg·mL-1) were determined during 18 days of refrigerated storage (4 ± ...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2020.12.089
更新日期：2021-02-15 00:00:00
abstract：:Starch-containing food normally has complex components and structure, which control its digestion kinetic properties and nutritional value. However, interactions among multiple food components and their effects on starch digestion kinetics are rarely reported. Here, we evaluated the influence of tea polyphenols [i.e.,...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2018.12.224
更新日期：2019-04-01 00:00:00
abstract：:Recently low-molecular lignin was reported to activate lytic polysaccharide monooxygenases (LPMOs) to oxidize cellulose. However, whether lignin formed in cell wall can play the role as electron donor for LPMOs is still largely unknown due to the complex ultrastructure of lignocellulosic biomass. In this study, we pre...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2020.06.014
更新日期：2020-10-15 00:00:00
abstract：:In this study, the green synthesis of gum kondagogu capped gold nanoparticles (GK-GNPs) was prepared using a naturally available polysaccharide. The anionic gum capped GK-GNPs enabled the successful coupling of folic acid (FA) and fluorescein isothiocyanate (FITC) to produce a fluorescently labelled GNP (F2-GNP). F2-G...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2017.12.069
更新日期：2018-04-01 00:00:00
abstract：:Under favorable growth conditions, Staphylococcus aureus infects and causes illnesses in humans and animals. Staphylococcal enterotoxins are considered the most important factor for food poisoning, with these toxins usually found in milk and its byproducts. This study investigated the presence of a classical enterotox...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2017.10.052
更新日期：2018-02-01 00:00:00
abstract：:A terpolymer of chitosan-melamine-glutaraldehyde was prepared for the first time and it was quaternized with glycidyl trimethyl ammonium chloride (GTMAC). The quaternized chitosan-melamine-glutaraldehyde resin (QCMGR) was found to be effective for the removal of nitrate and phosphate oxyanions. The resin was character...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2013.11.036
更新日期：2014-03-01 00:00:00
abstract：:Artemisinin, a natural anti-malarial agent, also possesses anti-proliferative and anti-angiogenic activity in cancer cells with very low toxicity to normal healthy cells. Drug loaded magnetic nanoparticles by using external magnetic field could selectively accumulate the drug at the target site and thereby reduce the ...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2017.03.137
更新日期：2017-11-01 00:00:00
abstract：:Peptidoglycan recognition proteins (PGRPs) are family of pattern recognition receptors (PRRs) and triggers the innate immune system (IIS) against the microbial infection. Although PGRPs have been intensively studied in model insects, they remain uncharacterized in most of the non-model insects. Here, we cloned and cha...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2019.09.081
更新日期：2020-01-01 00:00:00
abstract：:Lanthanide nanoparticles and nanorods especially their biocompatible oxide forms like cerium oxide nanoparticles (CNPs) with therapeutic applications are used to cure neurological oxidative stresses. Thus it tempts to study their biocompatible aspects by interactions with several biologically significant molecules. In...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2020.03.067
更新日期：2020-08-01 00:00:00
abstract：:Topoisomerases IB are anticancer and antimicrobial targets whose inhibition by several natural and non-natural compounds has been documented. The inhibition effect by berberine and some 13-(di)phenylalkyl berberine derivatives has been tested towards human topoisomerase IB. Derivatives belonging to the 13-diphenylalky...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2015.02.051
更新日期：2015-01-01 00:00:00
abstract：:A novel approach in fabricating anionic inter-polymeric complex polysaccharide bio-platform with enhanced mechanical, structural and chemical properties for burn wound dressings. This approach implies a facile, insitu method to design soft nano-floral inter-polymeric complexes. In particular, sodium alginate (SA) and ...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2020.04.157
更新日期：2020-08-15 00:00:00
abstract：SCOPE:In China, the root of M. officinalis has been widely used over thousands of years against a wide range of bone disease such as lumbago, limb-ache, sciatica and rheumatic arthralgia, and has tremendous medicinal value. But the bioactive constituents responsible for the osteoprotective effects in M. officinalis rem...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2018.08.082
更新日期：2018-12-01 00:00:00
abstract：:In this study, chitosan coatings incorporated with propolis extract (PE) were utilized to extend the shelf-life of refrigerated Nemipterus japonicus fillets. Microbiological (total mesophilic bacteria (TMB) and total psychrotrophic count (TPC)), physicochemical (pH, total volatile bases nitrogen (TVB-N), 2-thiobarbitu...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2019.07.204
更新日期：2019-10-15 00:00:00
abstract：:Heat shock proteins of 90kDa (Hsp90) are molecular chaperones essential for protein homeostasis. Besides chaperone activity, Hsp90 exhibits other cellular functions at membranes, yet how it interacts with membranes remains elusive. We report here that Hsp90B1 interacts with phospholipid membranes. We first cloned the ...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2017.08.121
更新日期：2018-01-01 00:00:00
abstract：:Due to the limited options for topical management of skin cancer, this study aimed at developing and evaluating nanoemulsions (NE) for topical delivery of the cytotoxic agent piplartine (piperlongumine). NEs were modified with chitosan or sodium alginate, and the effects on the physicochemical properties, piplartine d...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2020.09.167
更新日期：2020-12-15 00:00:00
abstract：:Trichothecenes are the sesquiterpenes secreted by Trichoderma spp. residing in the rhizosphere. These compounds have been reported to act as plant growth promoters and bio-control agents. The structural knowledge for the transporter proteins of their efflux remained limited. In this study, three-dimensional structure ...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2016.10.099
更新日期：2017-02-01 00:00:00
abstract：:Several microRNAs (miRNAs) expressed in the retina were confirmed to involve in retinal cell apoptosis, which was closely linked with the development of retinal diseases. Our previous studies have confirmed a vital role of miR-187 in retinal cells apoptosis. The aim of this study was to further elucidate the precise r...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2018.08.166
更新日期：2018-12-01 00:00:00
abstract：:This work aimed to study the potential of 155 strains of Bacillus sp., isolated from a collection of Tunisian microorganisms, for polyhydroxyalcanoates production. The strains were submitted to a battery of standard tests commonly used for determining bioplastic properties. The findings revealed that two of the isolat...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2013.06.043
更新日期：2013-10-01 00:00:00
abstract：:Dinoflagellates are the dominant source of bioluminescence in coastal waters. The luminescence reaction involves the oxidation of luciferin by a luciferase enzyme, which only takes place at low pH. The pH-dependence has previously been linked to four conserved histidines. It has been suggested that their protonation m...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2020.08.071
更新日期：2020-12-01 00:00:00
