Abstract：
:A systematic modelling for the branching point of amylopectin, on the basis of the double-helical structure proposed for amylose polymorphs was performed. A 'several steps' approach was used with increasing sophistication in the refinement, combining the use of geometrical criteria and molecular mechanics calculations. This modelling leads to four groups of solutions which were compared with those existing for amylose and the related oligomers. The most stable conformations provide a minimum of deformations for the alpha(1-4) linkages adjacent to the branching point. The conformation of minimum energy roughly corresponds to the proposal of Imberty and Perez and includes an alpha(1-6) configuration compatible with the well-known calculated maps. The other possible solutions are discussed in terms of deformations for the glucopyranose rings and of unusual conformation domains for the alpha(1-6) linkage.
journal_name
Int J Biol Macromoljournal_title
International journal of biological macromoleculesauthors
Buléon A,Tran Vdoi
10.1016/0141-8130(90)90041-8subject
Has Abstractpub_date
1990-12-01 00:00:00pages
345-52issue
6eissn
0141-8130issn
1879-0003pii
0141-8130(90)90041-8journal_volume
12pub_type
杂志文章abstract：:The emergence of the global pandemic caused by the novel SARS-CoV-2 virus has motivated scientists to find a definitive treatment or a vaccine against it in the shortest possible time. Current efforts towards this goal remain fruitless without a full understanding of the behavior of the virus and its adaptor proteins....
journal_title：International journal of biological macromolecules
pub_type： 杂志文章,评审
doi：10.1016/j.ijbiomac.2020.09.204
更新日期：2020-12-15 00:00:00
abstract：:Peanut allergy is IgE-mediated type-I hypersensitivity, and T helper 2 cytokines are central to those pathogenesis. We investigated the effects of the administration of chitin and chitosan on peanut-induced hypersensitivities in mouse food allergy models. Chitin and chitosan protected mice against peanut-induced anaph...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2013.06.017
更新日期：2013-10-01 00:00:00
abstract：:We investigated the lipid lowering ability of simvastatin loaded gellan gum-carrageenan composite polyspheres, which were prepared by ionotropic gelation/covalent crosslinking method. The surface morphology revealed that the polyspheres have rough and dense surface. The drug entrapment efficiency of the polyspheres pr...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2013.03.027
更新日期：2013-06-01 00:00:00
abstract：:Lectins are proteins capable of specific and reversible binding to mono- and/or oligosaccharides, and within this group, Legume lectins are the most studied. However, most of these studies focus on the Papilionoideae subfamily, with Caesalpinioideae and Mimosoideae lectins being significantly less explored in the lite...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章,评审
doi：10.1016/j.ijbiomac.2020.03.113
更新日期：2020-07-01 00:00:00
abstract：:Poly-N-isopropylacrylamide (PNIPAM) is a chemical isomer of poly-leucine, having the polar peptide group in the side-chain rather than in the backbone. It has been demonstrated experimentally that PNIPAM dissolved in aqueous solution undergoes a collapse transition from coil to globule on increasing temperature above ...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/s0141-8130(99)00122-1
更新日期：2000-03-16 00:00:00
abstract：:Herein we represent a new discovery based on amine material called hexamethyltriethylene tetramine (HMTETA). We have observed that when an aqueous solution of Zn(NO3)·6H2O was added to aqueous solution of HMTETA followed by shaking for a time, the colorless solution was converted to milky color under the alkaline medi...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2015.11.003
更新日期：2016-02-01 00:00:00
abstract：:The aim of this study was to fabricate a novel bilayer scaffold containing cellulose nanofiber/poly (vinyl) alcohol (CNF/PVA) to evaluate its potential use in skin tissue engineering. Here, the scaffolds were fabricated using a novel one-step freeze-drying technique with two different concentrations of the aforementio...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2019.06.104
更新日期：2019-09-01 00:00:00
abstract：:This study aimed to evaluate the effects of supplementing freezing and thawing media with hyaluronic acid (HA) on the quality parameters of frozen-thawed boar spermatozoa. Boar semen samples were collected from seven mature Yorkshire boars once a week using the gloved hand technique; these samples were frozen-thawed i...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2016.02.075
更新日期：2016-06-01 00:00:00
abstract：:Gelatin from saithe (Pollachius virens) skin, with high mineral content, was characterized and compared to marine gelatin from the market. As expected, gelatin extracted from the saithe skin had a high mineral content (>20%), compared to commercial gelatin (<0.2%). SDS-PAGE analysis revealed the presence of α-chains, ...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2020.04.047
更新日期：2020-08-01 00:00:00
abstract：:With the increasing demand for simple, efficient, environmentally friendly preparation methods to produce cellulose nanofibers for reinforcing a biodegradable film is increased, the role of nanofibers from the pure cellulose produced by bacteria becomes more important. This work characterized bacterial cellulose nanof...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2019.05.178
更新日期：2019-08-15 00:00:00
abstract：:Dendrobium devonianum has been used as herbal medicines and nutraceutical products since ancient time in China. However, its chemical composition and pharmacological mechanisms are not fully known. In present studies, by chemical purification and characteristic identification, we discovered a novel polysaccharide from...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2019.04.125
更新日期：2019-07-15 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：:The aim of this study was to investigate the inhibitory effects of molecular weight alteration of Dendrobium huoshanense polysaccharide on protein nonenzymatic glycation. For this purpose, one homogeneous active polysaccharide DHPD1 with molecular weight 3.2 kDa was extracted from D. huoshanense. GC analysis showed th...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2013.08.008
更新日期：2013-10-01 00:00:00
abstract：:Glycol chitosan/fucoidan nanogels loaded with anti-inflammatory peptide KAFAK (GC/Fu@KAFAK NGs) were fabricated based on the electrostatic interaction and genipin cross-linking methods. The prepared NGs had an average size of 286.3 ± 5.0 nm and positive surface charge of 14.0 ± 0.2 mV. The anti-inflammatory and chondr...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2020.12.158
更新日期：2021-02-15 00:00:00
abstract：:This study investigated the intestinal microbial community distribution of Type 2 diabetic mice and discussed the effects of the sea buckthorn protein on the regulation of gut microbes. Date was collected for 12 cases of normal mice (NC group), 12 cases of Type 2 diabetic mice (DC group), and 12 cases of highly concen...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2017.09.090
更新日期：2018-02-01 00:00:00
abstract：:In this paper, the composition and biological activities of polysaccharides from Inula britannica flower IBP obtained by water extraction were investigated. The properties and chemical compositions of IBP were analyzed with HPLC and IR methods. The results showed that IBP consisted of two kinds of polysaccharides with...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2012.06.021
更新日期：2012-11-01 00:00:00
abstract：:During the last few decades, there has been evident growth in the development and fabrication of nano structured materials due to their wide application for different fields of material science and engineering. Among all these materials, natural polymer-based hydrogels such as polysaccharides, proteins, lipids etc. ar...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章,评审
doi：10.1016/j.ijbiomac.2020.09.012
更新日期：2020-12-01 00:00:00
abstract：:Heparosan polysaccharide, known as a heparin precursor, can be used in drug delivery systems due to its good biocompatibility and anti-cancer effect. But few studies on the cellular uptake mechanism of heparosan polysaccharide-based nanocarrier have been investigated. Therefore, the intracellular trafficking and the u...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2019.02.133
更新日期：2019-06-01 00:00:00
abstract：:The formation of poly(beta-hydroxybutyrate), PHB, by Rhodobacter sphaeroides and Alcaligenes eutrophus was studied using the following carbon sources and solvents: (1), acetate in H2O; (2), D3-acetate in H2O; (3), acetate in 90 to 92% D2O; and (4), D3-acetate in 90 to 92% D2O. The growth of Rb. sphaeroides cultured un...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/s0141-8130(05)80017-0
更新日期：1992-02-01 00:00:00
abstract：:Water soluble hydrazide based O-carboxymethyl chitosan Schiff base ligands have been prepared from chitosan and a mixture of benzoic acidhydrazide with β-diketone by carboxymethylation using mono chloroaceticacid (MCA) through in-situ reaction. The degree of deacetylation of chitosan was determined by elemental analys...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2019.06.115
更新日期：2019-09-01 00:00:00
abstract：:This article has been withdrawn at the request of the author(s) and/or editor. The Publisher apologizes for any inconvenience this may cause. The full Elsevier Policy on Article Withdrawal can be found at https://www.elsevier.com/about/our-business/policies/article-withdrawal. ...
journal_title：International journal of biological macromolecules
pub_type： 撤回出版物
doi：10.1016/j.ijbiomac.2018.08.091
更新日期：2018-08-19 00:00:00
abstract：:Ligustrum quihoui (L. quihoui) is an important hedge material for landscaping and also possesses medicinal value. To generate genomic resources for better understanding the evolutionary history of this important plant, the organelle genomes of L. quihoui are de novo assembled and functionally annotated. Compared with ...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2020.10.075
更新日期：2020-12-15 00:00:00
abstract：:In this study, ecofriendly starch/TiO2 bio-nanocomposites were produced using with different nano-TiO2 (TiO2) content (1, 3, and 5 (wt%)). Physical, mechanical, thermal, water-vapor permeability (WVP) properties and UV transmittance were investigated. Our results showed that the increasing TiO2 content increased the h...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2016.11.065
更新日期：2017-02-01 00:00:00
abstract：:The research aims the development and optimization of capecitabine loaded interpenetrating polymeric network by ionotropic gelation method using polymers locust bean gum and sodium alginate by QbD approach. FMEA was performed to recognize the risks influencing CQAs. BBD was applied to study the effect of factors (poly...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2018.04.123
更新日期：2018-08-01 00:00:00
abstract：:This study aimed to investigate the chemical characteristics and the effects of an orabase gel with Cashew Gum Polysaccharide (CG-P) from Anacardium occidentale L. on alveolar bone loss and relative mRNA expression of TNF-α, IL-1β, RANK, RANKL, and OPG in the periodontal tissue of Wistar rats (Rattus norvegicus) subje...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2017.09.087
更新日期：2018-02-01 00:00:00
abstract：:After gelatinization, starch is prone to retrograde during storage, and it is a notorious challenge to inhibit starch retrogradation in papermaking, textile, and construction fields. This work aimed to develop a new method for inhibiting the retrogradation of normal corn starch (CS) and waxy corn starch (WCS) by sodiu...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2020.03.017
更新日期：2020-06-15 00:00:00
abstract：:Water-soluble chitosan-based core-shell particles that contained changeable cores were successfully applied to anchor carbon dioxide. The entrapment capacity of the particles for carbon dioxide (EC) depended on the cores. It was found that EC of the particles contained aqueous cores was higher than that of the beads w...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2016.05.022
更新日期：2016-08-01 00:00:00
abstract：:Roasting may be beneficial to extend the shelf life by inactivating the lipases and peroxidases in highland barley, but it may lead to the deterioration of starch quality. In this study, the pre-treatment techniques of pearling and tempering were tried to improve the efficiency of inactivation, and different roasting ...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2020.09.180
更新日期：2020-12-15 00:00:00
abstract：:In this study, the structure of inulin was chemically modified by Schiff bases in order to improve its biological activity. A total of 6 kinds of inulin derivatives were synthesized according to aza-Wittig reaction. Their structures were confirmed by FTIR, 1H NMR, and 13C NMR spectroscopy. The antioxidant activity of ...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2019.09.127
更新日期：2020-01-15 00:00:00
abstract：:The synthesis and characterization of a novel biodegradable graft copolymer based on partially hydrolyzed polymethylacrylate (PMA) grafted amylopectin (AP) was reported which was developed for the synthesis of silver nanoparticles from silver nitrate solution by facile green technique. The prepared graft copolymer was...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2015.07.046
更新日期：2015-11-01 00:00:00
