Abstract：
:In this study, medical cotton was subjected to acid hydrolysis in sulfuric, hydrochloric and phosphoric acid medium to prepare cellulose nanocrystals (CNC) with different morphologies and polymorphism. Morphology of the prepared CNC samples revealed fiber shaped morphology for sulfuric and hydrochloric acid hydrolyzed samples, whereas, spherical shaped for phosphoric acid hydrolyzed samples. The size of the spherical shaped CNC decreased with the increase of hydrolysis time, from 853 nm for 12 h to 187 nm for 48 h. X-ray Diffraction analysis showed that hydrochloric acid hydrolyzed CNC is cellulose I (CI), phosphoric acid hydrolyzed CNC is cellulose II (CII) and sulfuric acid hydrolyzed CNC contain both CI and CII. The crystallinity of sulfuric and hydrochloric acid hydrolysis samples was 91%, whereas, the crystallinity of phosphoric acid hydrolysis samples was between 43 and 60% depending on hydrolysis time. Thermal properties were also affected by the hydrolysis medium. Thus cellulose nanocrystals were prepared with different morphologies and physical characteristics through a facile method.
journal_name
Int J Biol Macromoljournal_title
International journal of biological macromoleculesauthors
Mahmud MM,Perveen A,Jahan RA,Matin MA,Wong SY,Li X,Arafat MTdoi
10.1016/j.ijbiomac.2019.03.027subject
Has Abstractpub_date
2019-06-01 00:00:00pages
969-976eissn
0141-8130issn
1879-0003pii
S0141-8130(18)36734-5journal_volume
130pub_type
杂志文章abstract：:Mishmi takin (Budorcas taxicolor taxicolor) is an endangered and least studies species. We sequenced and annotated a 16,584 bp long complete mitogenome of Mishmi takin (B. t. taxicolor). It was encoded by 37 genes: 13 Protein-Coding Genes (PCGs), two ribosomal RNA genes, 22 transfer RNA, and non-coding control region....
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2019.06.201
更新日期：2019-09-15 00:00:00
abstract：:In this study, a novel thiourea grafted porous sodium alginate-based adsorbent was synthesized by combining ion-imprinting and direct templating method. Due to ion-imprinting, the prepared adsorbent has demonstrated outstanding selectivity towards Pd (II) from bi-metallic solution at different pH values. Langmuir and ...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2020.04.153
更新日期：2020-08-15 00:00:00
abstract：:An edible hydroxypropyl starch (HPS) based bilayer film with a waterproof layer of zein was successfully prepared through a two-step solvent casting method. The morphology, mechanical properties, as well as water barrier properties of the bilayer film were systematically studied. Results showed that bilayer film prese...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2019.08.240
更新日期：2019-12-01 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：:This research aims to characterization of soluble soybean polysaccharide (SSPS) and development of a biodegradable SSPS nanocomposites prepared using various concentrations of TiO2 nanoparticles. 13C NMR suggested that backbone of SSPS is rhamnogalacturonan [1→4)-α-GalAp-(1/2)-α Rhap(1→]. Weight average molecular weig...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2018.01.182
更新日期：2018-06-01 00:00:00
abstract：:A new ion exchange column method was investigated to synthesize the soluble soybean polysaccharide-iron(III) complex (SSPS-FeIII1) using soluble soybean polysaccharides (SSPS). The feasibility of ion exchange column reaction was explored firstly. Results indicated the D730 anion macroporous adsorption resin could effe...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2017.11.038
更新日期：2018-03-01 00:00:00
abstract：:The study aims at formulation and optimization brain targeted nanoparticles (NP) of Rivastigmine (RT) to improve its therapeutic potential and to verify its safety profile. The NP were optimized using a two factor three level (3(2)) central composite design aiming to minimize particle size; maximize zeta potential and...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2013.04.024
更新日期：2013-08-01 00:00:00
abstract：:Microwave synthesis of starch-graft-poly(ethylacrylate) was optimized to obtain efficient Zn(II) adsorbent that has been characterized using IR, XRD and SEM analyses. Using the sample, adsorption of Zn(II) was studied as a function of pH, sorbent dose, initial Zn(II) concentration, % grafting, temperature and ionic st...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2010.05.023
更新日期：2010-10-01 00:00:00
abstract：:Hyaluronan is an extremely important polysaccharide from both the biological and commercial points of view. This review summarizes the present state of the art concerning the polymer and our understanding of the molecular mechanisms of its synthesis with emphasis on the implications of this understanding for polysacch...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章,评审
doi：10.1016/0141-8130(94)90056-6
更新日期：1994-12-01 00:00:00
abstract：:β-Glucosidases (BGL) are key members of the cellulase enzyme complex that determine efficiency of lignocellulosic biomass degradation, which have shown great functional importance to many biotechnological systems. A previous reported BGL from Neosartorya fischeri (NfBGL) showed much higher activity than other BGLs. Sc...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2020.02.117
更新日期：2020-05-15 00:00:00
abstract：:A novel effective cellulose-based adsorbent was prepared through two common reactions, which included the esterification of sugarcane bagasse cellulose with excess stearic acid and the reaction of grafting polyacrylamide brush by ultraviolet radiation initiation. The adsorbent can effectively adsorb Hg(II) ion from wa...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2017.11.027
更新日期：2018-03-01 00:00:00
abstract：:Lesser usages of native starch has attracted attention in the modification of starch to incorporate its benefits for pharmaceutical application. A work has been carried out to study the influence of carboxymethylation on the morphological, physico-chemical, powder, spectroscopical and drug discharge characteristics of...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2016.07.039
更新日期：2016-11-01 00:00:00
abstract：:EPPS, a new heteropolysaccharide from Echinops pungens roots, was extracted by warm water (70 °C) and fortuitously purified using column chromatographies on DEAE-cellulose A52 and Sephadex G-100. Total carbohydrate content, specific optical rotation and molecular mass of EPPS were 98.3%, -88.2 and 65.7 kDa, respective...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2020.06.128
更新日期：2020-10-15 00:00:00
abstract：:1,4-α-Glucan branching enzyme (GBE, EC. 2.4.1.18), which plays a key role in the synthesis of starch and glycogen, has been overexpressed in E. coli as an intracellular enzyme by many researchers. In this study, it was found that the GBEs from Geobacillus thermoglucosidans and Rhodothermus obamensis were secreted into...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2019.04.002
更新日期：2019-07-01 00:00:00
abstract：:A purified polysaccharide ACDP-2 was isolated from water extract of the stems of Cistanche deserticola. Chemical and spectroscopic analyses indicated that ACDP-2 is a highly branched arabinogalactan polymer that composes of linked d-galactopyranose and d-glucopyranose, which contains predominantly a branching point at...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2005.11.001
更新日期：2005-12-30 00:00:00
abstract：:In the absence of an experimental bTLR8 structure, recent studies have called attention to the fact that bTLR8 can also be activated by hTLR7/hTLR8 agonist, such as antiviral imidazoquinoline derivatives of resiquimod (R848) and imiquimod (R837) as well as some guanine nucleotide analogs with a scaffold structure rela...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2016.08.022
更新日期：2016-11-01 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：:Composite gels were prepared from 2% myofibrillar protein (MP) imbedded with native starch (potato or tapioca starch) or their modified starches in 0.6 M NaCl at pH 6.2. The role of native starch (potato or tapioca) and their modified counterparts in the rheology and microstructure of MP gels was evaluated. Dynamic rh...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2018.06.173
更新日期：2018-10-15 00:00:00
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
更新日期：2019-09-15 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：:A simple and valid ultraviolet (UV) spectrophotometric method for the determination of poly(γ-glutamic acid) is developed. The method is based on the UV absorption spectrum of γ-PGA in aqueous solution, which exhibits a maximum absorption wavelength at 216 nm. The results obtained were comparable to those obtained wit...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2012.04.005
更新日期：2012-07-01 00:00:00
abstract：:A threefold helical crystal structure of Bombyx mori silk fibroin has been observed in films prepared from aqueous silk fibroin solutions using the Langmuir Blodgett (LB) technique. The films were studied using a combination of transmission electron microscopy and electron diffraction techniques. Films prepared at a s...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/s0141-8130(99)00002-1
更新日期：1999-03-01 00:00:00
abstract：:Self-crosslinkable and injectable hydrogels were fabricated with collagen type I (Col I) and N-hydroxy sulfosuccinimide activated hyaluronic acid (HA-sNHS) at physiological conditions without any initiators or crosslinkers. The physical properties of hydrogels, such as gelation time, swelling property, degradation pro...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2020.07.319
更新日期：2020-12-01 00:00:00
abstract：:2,2',4,4'-tetrahydroxybenzophenone (Uvinul D50), a sunscreen used in cosmetics, has two effects in the melanin biosynthesis pathway. On the one hand, it acts a weak inhibitor of tyrosinase and on the other, it accelerates the conversion of dopachrome to melanin. Uvinul D50 was seen to behave as a weak competitive inhi...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2017.02.032
更新日期：2017-05-01 00:00:00
abstract：:The objectives of this study were to investigate the adsorption behavior of lysozyme (LSZ) onto magnesium aluminum silicate (MAS) at various pHs and to characterize the LSZ-MAS microparticles obtained from the molecular interaction between LSZ and MAS. The results showed that LSZ could be bound onto the MAS layers at ...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2015.07.033
更新日期：2015-09-01 00:00:00
abstract：:The objective of this work is to research impacts of oxidized (OCS), acetylated (ACS) and cross-linked (CLCS) corn starch on gelatinization properties of rice flour and their gel structure during storage at 4 °C for 1 and 7 days. OCS led to significant increase of pasting temperature and solubility in blend flour but ...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2020.03.002
更新日期：2020-06-15 00:00:00
abstract：:Temporomandibular disorder is a clinical painful condition in the temporomandibular joint (TMJ) region. The purified sulfated polysaccharide from the green marine algae Caulerpa racemosa (Cr) has provided anti-inflammatory and antinociceptive activity. This study evaluated these effects on a TMJ hypernociception model...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2020.01.272
更新日期：2020-05-01 00:00:00
abstract：:Metal-catalysed reduction of nitroaromatic compounds to aniline derivatives is a useful and important synthetic route in many applications. Metallic silver particles have gained much recent interest as efficient catalysts in catalytic reduction of nitroaromatic compounds by sodium borohydride. In the study metallic Ag...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2019.07.018
更新日期：2019-09-15 00:00:00
abstract：:Pumpkin polysaccharide was extracted by hot water extraction method. It was modified with chlorosulfonic acid-pyridine to obtain sulfated pumpkin polysaccharides (SP1, SP2) with different degrees of substitution, which was 0.35 and 0.65, respectively. The total sugar contents of pumpkin polysaccharide and its sulfated...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2018.12.261
更新日期：2019-04-01 00:00:00
abstract：:Arginine kinase (AK), a crucial enzyme in energy metabolism, buffers cellular ATP levels by catalyzing the reversible phosphoryl transfer between ATP and arginine. To better understand the role of Cys271 in conformational changes of AK from greasyback shrimp (Metapenaeus ensis), we replaced the residue with serine and...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章
doi：10.1016/j.ijbiomac.2011.04.002
更新日期：2011-07-01 00:00:00
