Structure of citrus pectins and viscometric study of their solution properties.

Abstract:

:Citrus pectins with degrees of methylation between 30 and 72% were carefully characterized in order to determine their charge density and molecular weight distribution, the content in galacturonic acid and in neutral sugars, the degree of methylation and acetylation. Using enzymic degradation it has been found that pectin molecules consist mainly of long homogalacturonan regions with some regions of neutral sugars as side chains attached on rhamnose residues. The viscometric behaviour of the different samples indicates that 0.1 M NaCl, at 25 degrees C, is a good solvent of sodium pectinates. From the evolution of the Huggins parameter, it appears that pectins with 50% of methylated galacturonic groups exhibit a maximum flexibility. A Mark-Houwink exponent of 0.8 has been found in good agreement with theoretical predictions for flexible polymers in a good solvent.

journal_name

Int J Biol Macromol

authors

Axelos MA,Thibault JF,Lefebvre J

doi

10.1016/0141-8130(89)90066-4

subject

Has Abstract

pub_date

1989-06-01 00:00:00

pages

186-91

issue

3

eissn

0141-8130

issn

1879-0003

pii

0141-8130(89)90066-4

journal_volume

11

pub_type

杂志文章
  • Biochemical and structural characterization of Cryptosporidium parvum Lactate dehydrogenase.

    abstract::The protozoan parasite Cryptosporidium parvum causes waterborne diseases worldwide. There is no effective therapy for C. parvum infection. The parasite depends mainly on glycolysis for energy production. Lactate dehydrogenase is a major regulator of glycolysis. This paper describes the biochemical characterization of ...

    journal_title:International journal of biological macromolecules

    pub_type: 杂志文章

    doi:10.1016/j.ijbiomac.2014.12.019

    authors: Cook WJ,Senkovich O,Hernandez A,Speed H,Chattopadhyay D

    更新日期:2015-03-01 00:00:00

  • Hemin/G-quadruplex structure and activity alteration induced by magnesium cations.

    abstract::The influence of metal cations on G-quadruplex structure and peroxidase-mimicking DNAzyme activity was investigated. Experiments revealed a significant role of magnesium ion, which in the presence of potassium cation influenced DNAzyme activity. This ability has been associated with alteration of G-quadruplex topology...

    journal_title:International journal of biological macromolecules

    pub_type: 杂志文章

    doi:10.1016/j.ijbiomac.2016.01.020

    authors: Kosman J,Juskowiak B

    更新日期:2016-04-01 00:00:00

  • TPR domain of Ser/Thr phosphatase of Aspergillus oryzae shows no auto-inhibitory effect on the dephosphorylation activity.

    abstract::A Ser/Thr phosphatase gene cloned from Aspergillus oryzae, aoppt, revealed that the tetratricopeptide repeat (TPR) and catalytic domains of the full-length AoPPT are located at the N- and C-terminal regions, respectively, similar to those of human Ser/Thr phosphatase 5 (PP5) and yeast Ppt1. Four different regions of A...

    journal_title:International journal of biological macromolecules

    pub_type: 杂志文章

    doi:10.1016/j.ijbiomac.2007.03.005

    authors: Feng B,Zhao CH,Tanaka S,Imanaka H,Imamura K,Nakanishi K

    更新日期:2007-08-01 00:00:00

  • Rheological and controlled release properties of hydrogels based on mushroom hyperbranched polysaccharide and xanthan gum.

    abstract::A hyperbranched polysaccharide, coded as TM3a, was extracted from the Pleurotus tuber-regium sclerotia. TM3a was hybridized with xanthan gum (XG) by chemical crosslinking using sodium trimetaphosphate (STMP) to obtain new hydrogels with self-healing and release-controlled properties. The oscillatory rheological measur...

    journal_title:International journal of biological macromolecules

    pub_type: 杂志文章

    doi:10.1016/j.ijbiomac.2018.09.008

    authors: Zhang R,Tao Y,Xu W,Xiao S,Du S,Zhou Y,Hasan A

    更新日期:2018-12-01 00:00:00

  • How to calculate starch lamellar features with improved accuracy by small angle X-ray scattering.

    abstract::Starch lamellar structures unraveled by small angle X-ray scattering (SAXS) have been critically correlated with its functionalities. However, the lamellar features calculated by the classical linear correlation function based on SAXS data are not well convincingly analyzed, because the thickness of amorphous lamellae...

    journal_title:International journal of biological macromolecules

    pub_type: 杂志文章

    doi:10.1016/j.ijbiomac.2019.09.054

    authors: Lin L,Chi C,Wu C

    更新日期:2019-12-01 00:00:00

  • Deciphering the interactions of fish gelatine and hyaluronic acid in aqueous solutions.

    abstract::The interactions of fish gelatine (FG) with hyaluronic acid (HA) are studied in an aqueous environment at 25°C by turbidimetric titration, confocal scanning laser microscopy, dynamic light scattering, zeta potentiometry, spectrophotometry with methylene blue, and construction of state diagrams. FG forms soluble comple...

    journal_title:International journal of biological macromolecules

    pub_type: 杂志文章

    doi:10.1016/j.ijbiomac.2017.04.083

    authors: Razzak MA,Kim M,Kim HJ,Park YC,Chung D

    更新日期:2017-09-01 00:00:00

  • The inhibitory effect of farnesiferol C against catalase; Kinetics, interaction mechanism and molecular docking simulation.

    abstract::Farnesiferol C (FC) is a natural sesquiterpene coumarin, which includes a widely range of biological activities. In this work, effects of FC on the structure and catalytic function of bovine liver catalase (BLC) was assessed by various spectroscopic and theoretical methods. Kinetic studies showed that FC has a remarka...

    journal_title:International journal of biological macromolecules

    pub_type: 杂志文章

    doi:10.1016/j.ijbiomac.2018.03.053

    authors: Yekta R,Dehghan G,Rashtbari S,Ghadari R,Moosavi-Movahedi AA

    更新日期:2018-07-01 00:00:00

  • Facile synthesis of amphiphilic peach gum polysaccharide as a robust host for efficient encapsulation of methylene blue and methyl orange dyes from water.

    abstract::Despite impressive progress of macromolecular encapsulation technique based on hyperbranched polymer (HP), the use of natural HP for guest encapsulation has rarely been reported. Herein, we present the simple synthesis of amphiphilic PGP-DC from natural peach gum polysaccharide (PGP) and demonstrate that the PGP-DC ca...

    journal_title:International journal of biological macromolecules

    pub_type: 杂志文章

    doi:10.1016/j.ijbiomac.2020.03.151

    authors: Zeng S,Tan J,Xu X,Huang X,Zhou L

    更新日期:2020-07-01 00:00:00

  • An alternate high yielding purification method for Clitoria ternatea lectin.

    abstract::In our previous publication we had reported the purification and characterization of Clitoria ternatea agglutinin from its seeds on fetuin CL agarose affinity column, designated CTA [A. Naeem, S. Haque, R.H. Khan. Protein J., 2007]. Since CTA binds beta-d-galactosides, this lectin can be used as valuable tool for glyc...

    journal_title:International journal of biological macromolecules

    pub_type: 杂志文章

    doi:10.1016/j.ijbiomac.2007.05.006

    authors: Naeem A,Ahmad E,Khan RH

    更新日期:2007-10-01 00:00:00

  • Structure based mimicking of Phthalic acid esters (PAEs) and inhibition of hACMSD, an important enzyme of the tryptophan kynurenine metabolism pathway.

    abstract::Human α-amino-β-carboxymuconate-ε-semialdehyde decarboxylase (hACMSD) is a zinc containing amidohydrolase which is a vital enzyme of the kynurenine pathway in tryptophan metabolism. It prevents the accumulation of quinolinic acid (QA) and helps in the maintenance of basal Trp-niacin ratio. To assess the structure base...

    journal_title:International journal of biological macromolecules

    pub_type: 杂志文章

    doi:10.1016/j.ijbiomac.2017.12.005

    authors: Singh N,Dalal V,Kumar P

    更新日期:2018-03-01 00:00:00

  • Hepatoprotective effect of a polysaccharide from Crassostrea gigas on acute and chronic models of liver injury.

    abstract::A water-soluble polysaccharide was isolated from Crassostrea gigas (CGPS-1) by hot-water extraction, isoelectric precipitation, hydrolysis and ultrafiltration without using ethanol. Based on the calibration with Dextran, CGPS-1 had a molecular weight of approximately 6.5×10(6) Da. CGPS-1 was analyzed using high-perfor...

    journal_title:International journal of biological macromolecules

    pub_type: 杂志文章

    doi:10.1016/j.ijbiomac.2015.03.056

    authors: Shi X,Ma H,Tong C,Qu M,Jin Q,Li W

    更新日期:2015-01-01 00:00:00

  • Inhibition of amyloid fibrillation of γD-crystallin model peptide by the cochineal Carmine.

    abstract::γD-crystallin is among the most abundant γ-crystallins in the human eye lens which are essential for preserving its transparency. Aging, and environmental changes, cause crystallins to lose their native soluble structure and aggregate, resulting in the formation of cataract. Current treatment of cataract is surgical r...

    journal_title:International journal of biological macromolecules

    pub_type: 杂志文章

    doi:10.1016/j.ijbiomac.2020.12.106

    authors: Abu-Hussien M,Viswanathan GK,Borisover L,Mimouni M,Engel H,Zayit-Soudry S,Gazit E,Segal D

    更新日期:2021-02-01 00:00:00

  • Polyethyleneimine-protein interactions and implications on protein stability.

    abstract::Protein stability assessment of seven model proteins in the presence of low molecular weight polyethyleneimine (PEI, MW 2000 Da) was performed. Thermodynamic stability, monitored by circular dichroism (CD) spectroscopy, showed that the polymer did not have a major effect on the melting temperature (T(m)) of the basic ...

    journal_title:International journal of biological macromolecules

    pub_type: 杂志文章

    doi:10.1016/j.ijbiomac.2010.04.003

    authors: Mazzaferro L,Breccia JD,Andersson MM,Hitzmann B,Hatti-Kaul R

    更新日期:2010-07-01 00:00:00

  • Isolation and processing of silk proteins for biomedical applications.

    abstract::Silk proteins of silkworms are chiefly composed of core fibroin protein and glycoprotein sericin that glues fibroin. Unique mechanical properties, cyto-compatibility and controllable biodegradability facilitate the use of fibroin in biomedical applications. Sericin serves as additive in cosmetic and food industries, a...

    journal_title:International journal of biological macromolecules

    pub_type: 杂志文章

    doi:10.1016/j.ijbiomac.2014.06.022

    authors: Kundu B,Kurland NE,Yadavalli VK,Kundu SC

    更新日期:2014-09-01 00:00:00

  • Potent inhibitions of monoamine oxidase A and B by acacetin and its 7-O-(6-O-malonylglucoside) derivative from Agastache rugosa.

    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

    authors: Lee HW,Ryu HW,Baek SC,Kang MG,Park D,Han HY,An JH,Oh SR,Kim H

    更新日期:2017-11-01 00:00:00

  • Roles of amino acid residues H66 and D326 in the creatine kinase activity and structural stability.

    abstract::Creatine kinase (CK) is a key enzyme for cellular energy metabolism, catalyzing the reversible phosphoryl transfer from phosphocreatine to ADP in vertebrates. CK contains a pair of highly conserved amino acids (H66 and D326) which might play an important role in sustaining the compact structure of CK by linking its N-...

    journal_title:International journal of biological macromolecules

    pub_type: 杂志文章

    doi:10.1016/j.ijbiomac.2017.09.020

    authors: Wu QY,Wei F,Zhu YY,Tong YX,Cao J,Zhou P,Li ZY,Zeng LY,Li F,Wang XY,Xu KL

    更新日期:2018-02-01 00:00:00

  • Antimicrobial Imperata cylindrica paper coated with anionic nanocellulose crosslinked with cationic ions.

    abstract::Recently, the interest in active packaging utilization has increased with population growth, food demand and new consumer trend like food delivery services. This new system, however, requires the use of additives to extend the food product quality and safety as well as in maintaining the shelf-life. This study was to ...

    journal_title:International journal of biological macromolecules

    pub_type: 杂志文章

    doi:10.1016/j.ijbiomac.2020.07.102

    authors: Zulfiana D,Karimah A,Anita SH,Masruchin N,Wijaya K,Suryanegara L,Fatriasari W,Fudholi A

    更新日期:2020-12-01 00:00:00

  • Graft copolymerization of polyvinylpyrollidone onto Azadirachta indica gum polysaccharide in the presence of crosslinker to develop hydrogels for drug delivery applications.

    abstract::In this work, graft-copolymerization of poly vinylpyrollidone onto Azadirachta indica gum polysaccharide in the presence of crosslinker has been carried out to prepare the hydrogel for use in drug delivery. The polymers were characterized by cryo-SEM, AFM, FTIR, and 13C NMR. The gel strength, cross-link density, mesh ...

    journal_title:International journal of biological macromolecules

    pub_type: 杂志文章

    doi:10.1016/j.ijbiomac.2020.05.091

    authors: Singh B,Singh B

    更新日期:2020-09-15 00:00:00

  • The xylose-rich pectins from pea hulls.

    abstract::The hot acid extract of pea hull, HSP, was rich in galacturonic acid, arabinose and xylose. It was fractionated by copper precipitation followed by ion-exchange chromatography. The copper-soluble fraction represented 26% of HSP and was mostly composed of an arabinan with a low degree of branching, some heteroxylans an...

    journal_title:International journal of biological macromolecules

    pub_type: 杂志文章

    doi:10.1016/s0141-8130(97)00055-x

    authors: Renard CM,Weightman RM,Thibault JF

    更新日期:1997-08-01 00:00:00

  • Preparation screening, production optimization and characterization of exopolysaccharides produced by Lactobacillus sanfranciscensis Ls-1001 isolated from Chinese traditional sourdough.

    abstract::The present study focused on preparation screening, production optimization and characterization of exopolysaccharides (EPS) produced by Lactobacillus sanfranciscensis isolated from a Chinese traditional sourdough sample. In addition, in vitro antioxidant activity of pure EPS was determined. A total of 51 strains of L...

    journal_title:International journal of biological macromolecules

    pub_type: 杂志文章

    doi:10.1016/j.ijbiomac.2019.08.077

    authors: Zhang G,Zhang W,Sun L,Sadiq FA,Yang Y,Gao J,Sang Y

    更新日期:2019-10-15 00:00:00

  • Characterization and origin of bacterial arginine kinases.

    abstract::Arginine kinase (AK) plays a key role in ATP buffering systems of tissues and nerves that display high and variable rates of ATP turnover and is widely distributed in invertebrate animals. The enzyme is also found in unicellular organisms, protists and bacteria, but its occurrence is intermittent among species. The AK...

    journal_title:International journal of biological macromolecules

    pub_type: 杂志文章

    doi:10.1016/j.ijbiomac.2013.02.023

    authors: Suzuki T,Soga S,Inoue M,Uda K

    更新日期:2013-06-01 00:00:00

  • Decolorization affects the structural characteristics and antioxidant activity of polysaccharides from Thesium chinense Turcz: Comparison of activated carbon and hydrogen peroxide decolorization.

    abstract::Different decolorization methods have different effects on the properties of polysaccharides. In this study, polysaccharides extracted from Thesium chinense Turcz (T. chinense) were decolorized using either hydrogen peroxide (H2O2), which has been previously reported, or activated carbon. To begin, the conditions for ...

    journal_title:International journal of biological macromolecules

    pub_type: 杂志文章

    doi:10.1016/j.ijbiomac.2019.11.074

    authors: Shao L,Sun Y,Liang J,Li M,Li X

    更新日期:2020-07-15 00:00:00

  • Chemical synthesis and characterization of chitosan/silver nanocomposites films and their potential antibacterial activity.

    abstract::This study provides the optimum preparation parameters for functional chitosan silver nanocomposite (CSN) films with promising antibacterial efficacy though prepared with very low silver nitrate (AgNO3) concentration. Chitosan nano‑silver composites were fabricated by In-situ chemical method utilizing the reducing abi...

    journal_title:International journal of biological macromolecules

    pub_type: 杂志文章

    doi:10.1016/j.ijbiomac.2018.05.057

    authors: Shah A,Hussain I,Murtaza G

    更新日期:2018-09-01 00:00:00

  • Synthesis, antimicrobial activity, and sustainable release of novel α-aminophosphonate derivatives loaded carrageenan cryogel.

    abstract::Novel α-aminophosphonates 4 were synthesized via one pot three-component reaction of 4-aminoantipyrine, aldehydes, triphenylphosphite and Lewis acid catalyst. The chemical structures of all the synthesized compounds were elucidated by IR, NMR and MS spectral analysis. The antimicrobial activity of 4 was tested in vitr...

    journal_title:International journal of biological macromolecules

    pub_type: 杂志文章

    doi:10.1016/j.ijbiomac.2020.06.251

    authors: Elsherbiny DA,Abdelgawad AM,El-Naggar ME,El-Sherbiny RA,El-Rafie MH,El-Sayed IE

    更新日期:2020-11-15 00:00:00

  • From cashew byproducts to biodegradable active materials: Bacterial cellulose-lignin-cellulose nanocrystal nanocomposite films.

    abstract::While the cashew culture is focused on processing and commercialization of cashew nuts, the pseudofruit (cashew apples) - highly perishable and of limited acceptance - are mostly wasted. The cashew tree pruning fiber (CTPF) is another interesting cashew byproduct. In this study, films have been made from bacterial cel...

    journal_title:International journal of biological macromolecules

    pub_type: 杂志文章

    doi:10.1016/j.ijbiomac.2020.07.269

    authors: Sá NMSM,Mattos ALA,Silva LMA,Brito ES,Rosa MF,Azeredo HMC

    更新日期:2020-10-15 00:00:00

  • Alginate/chitosan multilayer films coated on IL-4-loaded TiO2 nanotubes for modulation of macrophage phenotype.

    abstract::Macrophage phenotype conversion is crucial for improving post-traumatic angiogenesis and tissue repair. Biomaterials with the ability of skewing macrophage phenotype have attracted widespread attention in the field of tissue engineering. The aim of this study was to transform macrophage phenotype by a three-step proce...

    journal_title:International journal of biological macromolecules

    pub_type: 杂志文章

    doi:10.1016/j.ijbiomac.2019.03.184

    authors: Yin X,Li Y,Yang C,Weng J,Wang J,Zhou J,Feng B

    更新日期:2019-07-01 00:00:00

  • Synthesis of γ-cyclodextrin/chitosan composites for the efficient removal of Cd(II) from aqueous solution.

    abstract::The synthesis of chitosan-graft-γ-cyclodextrin (Ch-g-γ-CD) using persulfate/ascorbic acid redox system was done and characterized by FTIR, XRD, TGA and SEM/EDX. The optimum yield of the copolymer was obtained using 16×10(-3) M γ-cyclodextrins (γ-CD), 2.8×10(-2) M ascorbic acid (AA), 1.8×10(-2) M K(2)S(2)O(8) and 0.1g ...

    journal_title:International journal of biological macromolecules

    pub_type: 杂志文章

    doi:10.1016/j.ijbiomac.2011.06.002

    authors: Mishra AK,Sharma AK

    更新日期:2011-11-01 00:00:00

  • Comparison in docetaxel-loaded nanoparticles based on three different carboxymethyl chitosans.

    abstract::In this study, three different carboxymethyl chitosans (CMCs), namely O-carboxymethyl chitosan (OC), N-carboxymethyl chitosan (NC) and N,O-carboxymethyl chitosan (NOC), were prepared as nano-carriers for an anti-tumor drug, docetaxel (DCT). Three CMCs were fabricated into drug-loading nanoparticles under different pre...

    journal_title:International journal of biological macromolecules

    pub_type: 杂志文章

    doi:10.1016/j.ijbiomac.2017.03.195

    authors: Zhang E,Xing R,Liu S,Li K,Qin Y,Yu H,Li P

    更新日期:2017-08-01 00:00:00

  • Structural analysis of point mutations in the Hairless gene and their association with the activity of the Hairless protein.

    abstract::The Notch signaling pathway (NSP) is an important intercellular communication mechanism that regulates embryo development and adult physiological functions. The Hairless (H) protein is a powerful antagonist of the NSP by its interaction with the Suppressor of Hairless (Su[H]) protein, recruiting the corepressors Gro a...

    journal_title:International journal of biological macromolecules

    pub_type: 杂志文章

    doi:10.1016/j.ijbiomac.2008.08.012

    authors: Paz-Gómez D,Baizabal-Aguirre VM,Valdez-Alarcón JJ,Cajero-Juárez M,Nagel AC,Preiss A,Maier D,Bravo-Patiño A

    更新日期:2008-12-01 00:00:00

  • The benzene metabolite p-benzoquinone inhibits the catalytic activity of bovine liver catalase: A biophysical study.

    abstract::The current communication reports the inhibitory effect of para-benzoquinone (p-BQ) on the structure and function of bovine liver catalase (BLC), a vital antioxidant enzyme. Both BLC and p-BQ were dissolved in respective buffers and the biophysical interaction was studied at physiological concentrations. For the first...

    journal_title:International journal of biological macromolecules

    pub_type: 杂志文章

    doi:10.1016/j.ijbiomac.2020.11.044

    authors: Jena AB,Samal RR,Kumari K,Pradhan J,Chainy GBN,Subudhi U,Pal S,Dandapat J

    更新日期:2021-01-15 00:00:00