Abstract：
:Most commercially available plant celluloses, such as kraft pulps and cotton celluloses, have so-called leveling-off degrees of polymerization (LODPs) when subjected to dilute acid hydrolysis. The formation of LODPs is hypothesized to be caused by disordered regions that are present periodically along each cellulose microfibril in plant celluloses. Here, we prepared never-dried wood cellulose, and wood celluloses at different drying stages, and subjected them to dilute acid hydrolysis. The viscosity average degrees of polymerization (DPv) of the wood celluloses decreased in DPv with increasing dilute acid-hydrolysis times. However, the DPv values after 4h of acid hydrolysis differed from those of softwood bleached kraft pulp (SBKP), which showed typical patterns of LODPs. Thus, the disordered regions corresponding to LODPs that were observed for SBKP are probably not synthesized in the native wood. Instead, such disordered regions are formed secondarily or artificially during the isolation/purification and/or drying processes of plant cellulose fibers. The results of the dilute acid hydrolysis and the 2,2,6,6-tetramethylpiperidine-1-oxyl radical (TEMPO)-mediated oxidation of SBKP and softwood unbleached soda-anthraquinone pulp showed that the structures of disordered regions can be controlled via the preparation and drying conditions of wood cellulose used as starting materials.
journal_name
Int J Biol Macromoljournal_title
International journal of biological macromoleculesauthors
Funahashi R,Ono Y,Tanaka R,Yokoi M,Daido K,Inamochi T,Saito T,Horikawa Y,Isogai Adoi
10.1016/j.ijbiomac.2017.11.078subject
Has Abstractpub_date
2018-04-01 00:00:00pages
914-920eissn
0141-8130issn
1879-0003pii
S0141-8130(17)33896-5journal_volume
109pub_type
杂志文章abstract：:For the majority of the last century, commercial routes to regenerated cellulose fibres have coped with the difficulties of making a good cellulose solution by using an easy to dissolve derivative (e.g. xanthate in the case of viscose rayon) or complex (e.g. cuprammonium rayon). For the purposes of this paper, advance...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章,评审
doi：10.1016/0141-8130(96)81836-8
更新日期：1995-12-01 00:00:00
abstract：:Structural characteristics and thermal and solution properties of the regenerated silk fibroin (SF) prepared from formic acid (FU) were compared with those of SF from water (AU). According to the turbidity and shear viscosity measurement, SF formic acid solution was stable and transparent, no molecular aggregations oc...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/s0141-8130(01)00159-3
更新日期：2001-08-20 00:00:00
abstract：:Galactomannan extracted from Trigonella persica endosperm like to other galactomannans is useful in the medicine and pharmaceutical industry such as drug delivery due to its unique physicochemical properties. As soon as germination takes place, the hydrolysis of galactomannan begins and its structure changes. Evaluati...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2019.06.225
更新日期：2019-09-15 00:00:00
abstract：:UN1 is a membrane glycoprotein that is expressed in immature human thymocytes, a subpopulation of peripheral T lymphocytes, the HPB acute lymphoblastic leukemia (ALL) T-cell line and fetal thymus. We previously reported the isolation of a monoclonal antibody (UN1 mAb) recognizing the UN1 protein that was classified as...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2006.02.020
更新日期：2006-08-15 00:00:00
abstract：:A bacterium capable of degrading poly(3-hydroxybutyrate) [P(3HB)] was isolated from laboratory media and identified as Pseudomonas pickettii. The strain P. pickettii excreted an extracellular poly(hydroxyalkanoate) (PHA) depolymerase and grew on P(3HB) as the sole carbon source. P. pickettii also grew on 3-hydroxybuty...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/0141-8130(93)90040-s
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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：:Monoclonal antibodies (mAbs) and their derivatives have achieved remarkable success as medicine, targeting both diagnostic and therapeutic applications associated with communicable and non-communicable diseases. In the last 3 to 4 decades, tremendous success has been manifested in the field of cancer therapy, autoimmu...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章,评审
doi：10.1016/j.ijbiomac.2019.06.006
更新日期：2019-08-15 00:00:00
abstract：:Protein aggregates are formed due to the inappropriate folding of polypeptides. Human lysozyme (HLZ) plays an important role in the innate immune response of the body and has been used extensively as a model protein to study aggregation. In this study, we showed that HLZ undergoes unfolding induced aggregation when he...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2018.02.095
更新日期：2018-07-01 00:00:00
abstract：:This study describes a simple method of preparation and physico-chemical properties of modified starches (type-3 resistant starches) from banana (Musa AAB), and the modified starches investigated as functional food with a beneficial effect on type-2 diabetes. RS3 was prepared using a method combined with debranching m...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2016.10.050
更新日期：2017-01-01 00:00:00
abstract：:Golgi Reassembly and Stacking Proteins (GRASPs) were firstly described as crucial elements in determining the structure of the Golgi complex. However, data have been accumulating over the years showing GRASPs can participate in various cell processes beyond the Golgi maintenance, including cell adhesion and migration,...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章,评审
doi：10.1016/j.ijbiomac.2020.08.203
更新日期：2020-12-01 00:00:00
abstract：:Sour orange peel, a by-product of the fruit juice industry, was used as a source of pectin. The effects of temperature (75-95°C), time (30-90 min), and liquid-solid ratio (20-40, v/w) were investigated on yield, methoxylation degree (DE), and galacturonic acid content using a Box-Behnken design and response surface me...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2015.11.007
更新日期：2016-01-01 00:00:00
abstract：:In the present work, chitosan physicochemical transformations that occur during high energy ball milling are investigated and correlated with adsorption capacity of organic pollutants (using azo-dye reactive red 2 as molecular probe). Experimental results reveal that chitosan ball milled for 1 h shows a 70% increase o...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2020.01.171
更新日期：2020-04-01 00:00:00
abstract：:The thermal helix-coil transition in UV irradiated collagen solution, collagen film and pieces of rat tail tendon (RTT) were compared. Their thermal stability's were determined by differential scanning calorimeter (DSC) and by viscometric measurements. The denaturation temperatures of collagen solution, film and piece...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/s0141-8130(99)00047-1
更新日期：1999-05-01 00:00:00
abstract：:The aim of this work was to develop new method for the production of chitosan/agarose (CHN/A) film that could serve as a potential artificial skin substitute for regenerative medicine applications. Within this new production method, the concentrations of biomaterial components (chitosan in CH3COOH and agarose in NaOH)...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2020.07.099
更新日期：2020-12-01 00:00:00
abstract：:To understand the contribution of granule inner portion to the pasting property of acetylated potato starch under the electric field and ultrasonic treatment, these starches were subjected to chemical surface gelatinization by 4.0 mol/L CaCl2 to obtain remaining granules with pasting time 0, 6, 12, 18, 24, 30 min, res...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2019.12.102
更新日期：2020-02-15 00:00:00
abstract：:Two exopolysaccharides, NPS and APS, were isolated from L. plantarum WLPL09 and purified by ion-exchange chromatography. The structural analyses showed that molecular weight of NPS and APS were 72.60 kDa and 33.22 kDa, respectively. NPS was mainly composed of mannose and glucose, in molar ratio of 85.35:14.65, while A...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2020.06.277
更新日期：2020-11-15 00:00:00
abstract：:We have found that polyacrylamide gels cross-linked with bisacrylamide induce a larger macromolecular osmotic pressure than the non cross-linked gels. This means also that in the cross-linked gels hydration water is held more tightly to the polymer, i.e., more work is needed to remove water, than in the non cross-link...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2004.11.002
更新日期：2005-03-01 00:00:00
abstract：:Targeted drug carrier systems not only prolong the long-term circulation of drugs, but also improve their bioavailability. To obtain a pH/temperature synergistically responsive polymer carrier, temperature and pH-sensitive groups were chemically grafted onto a cassava starch backbone. Secondly, the structure of the po...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2020.09.248
更新日期：2020-12-15 00:00:00
abstract：:Laccases are multicopper oxidases that catalyze the oxidation of variety of substrates. The specificity and efficiency of laccases are clearly the important components leading to their remarkable uses. To develop an improved biocatalysts, site directed mutagenesis of laccase from Bacillus HR03 was carried out in the c...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2018.02.019
更新日期：2018-06-01 00:00:00
abstract：:In the present study, small-sized porous scaffolds were obtained from the freeze-drying of sodium hyaluronate/chitosan polyelectrolyte complexes. The obtained materials were characterized by a set of techniques including attenuated total reflectance-Fourier transform infrared (ATR-FTIR) spectroscopy, swelling determin...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2011.06.011
更新日期：2011-11-01 00:00:00
abstract：:Black soybeans are commonly consumed as health foods and used in traditional Chinese medicine, but they are rarely cultivated as edible sprouts. During germination, the composition of seeds undergoes distinct changes that cause variations in bioactivities. In this study, the water-soluble black soybean polysaccharide ...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2018.02.145
更新日期：2018-07-01 00:00:00
abstract：:Cellulose hydrogel from aqueous solution of lithium bromide demonstrated excellent tunability of mechanical property and shape. A series of compression tests showed that cellulose hydrogel covered a wide range of mechanical property, where the compressive Young's modulus was controllable from 30 kPa to 1.3 MPa by chan...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2018.05.071
更新日期：2018-10-01 00:00:00
abstract：:A water-soluble polysaccharide was isolated from marine green algae Ulva pertusa and then chelated with iron to prepare the polysaccharide‑iron (III) complex. The immunomodulatory activities of sulfated polysaccharide and polysaccharide‑iron (III) complex were investigated through a mice immune-deficiency model. Cyclo...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2019.04.101
更新日期：2019-07-15 00:00:00
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
更新日期：2018-10-15 00:00:00
abstract：:Human serum albumin (HSA) contains three alpha-helical domains (I-III). The unfolding process of these domains was monitored using covalently bound fluorescence probes; domain I was monitored by N-(1-pyrene)maleimide (PM) conjugated with cys-34, domain II was monitored by the lone tryptophan residue and domain III was...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2005.10.009
更新日期：2005-12-15 00:00:00
abstract：:Five compounds were isolated from the leaves of Agastache rugosa and tested for monoamine oxidase (MAO) inhibitory activity. Acacetin, a flavonoid, potently inhibited recombinant human MAO-A and MAO-B (IC50=0.19 and 0.17μM, respectively), and reversibly and competitively inhibited MAO-A and MAO-B (Ki=0.045 and 0.037μM...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2017.06.076
更新日期：2017-11-01 00:00:00
abstract：:A series of negatively charged macromolecules (NCMs) including poly (sulfonated styrene-co-methyl methacrylate) (P(SS-co-MMA)), poly (acrylic acid-co-methyl methacrylate) (P(AA-co-MMA)) and poly (sulfonated styrene-co-acrylic acid-co-methyl methacrylate) (P(SS-co-AA-co-MMA)) are synthesized by reversible addition frag...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2013.01.014
更新日期：2013-04-01 00:00:00
abstract：:The discovery of genes responsible for the production of bioactive metabolites via metabolic pathways combined with the advances in synthetic biology tools, has allowed the establishment of numerous microbial cell factories, for instance the yeast cell factories, for the manufacture of highly useful metabolites from r...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章,评审
doi：10.1016/j.ijbiomac.2018.01.149
更新日期：2018-06-01 00:00:00
abstract：:In this study, fish gelatin and chitosan were used as the film-forming substrate, and different concentrations of TiO2-Ag were added to prepare composite films. The physicochemical characteristics and microstructure of the films were studied. The results showed that the addition of TiO2-Ag significantly increased the ...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2020.03.070
更新日期：2020-07-01 00:00:00
abstract：:Recently, a salivary gland transcriptome study demonstrated that the transcripts of a putative cystatin gene (SeqID AAEL013287; Aacystatins) from Aedes aegypti were increased in DENV2-infected mosquitoes and that silencing of the Aacystatin gene resulted in an increase in DENV titres. In this work, Aacystatin was bioc...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2019.12.010
更新日期：2020-03-01 00:00:00
