Structural characteristics and properties of the regenerated silk fibroin prepared from formic acid.

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 occurred. The sample FU exhibited the beta-sheet structure, while AU random coil conformation using Fourier transform infrared (FTIR), X-ray diffraction (XRD), and differential scanning calorimetry. The effects of methanol treatment on samples were also examined. According to the measurement of crystallinity (XRD) and crystallinity index (FTIR), the concept of long/short-range ordered structure formation was proposed. Long-range ordered crystallites are predominantly formed for methanol treated SF film while SF film cast from formic acid favors the formation of short-range ordered structure. The relaxation temperatures of SF films measured by dynamic thermomechanical analysis supported the above mechanism due to the sensitivity of relaxation temperature on the short-range order.

journal_name

Int J Biol Macromol

authors

Um IC,Kweon HY,Park YH,Hudson S

doi

10.1016/s0141-8130(01)00159-3

keywords:

subject

Has Abstract

pub_date

2001-08-20 00:00:00

pages

91-7

issue

2

eissn

0141-8130

issn

1879-0003

pii

S0141813001001593

journal_volume

29

pub_type

杂志文章
  • Encapsulation of probiotic Bifidobacterium longum BIOMA 5920 with alginate-human-like collagen and evaluation of survival in simulated gastrointestinal conditions.

    abstract::Alginate (ALg)-human-like collagen (HLC) microspheres were prepared by the technology of electrostatic droplet generation in order to develop a biocompatible vehicle for probiotic bacteria. Microparticles were spherical with mean particle size of 400μm. The encapsulation efficiency (EE) of ALg-HLC microspheres could r...

    journal_title:International journal of biological macromolecules

    pub_type: 杂志文章

    doi:10.1016/j.ijbiomac.2011.08.018

    authors: Su R,Zhu XL,Fan DD,Mi Y,Yang CY,Jia X

    更新日期:2011-12-01 00:00:00

  • NIR triggered liposome gold nanoparticles entrapping curcumin as in situ adjuvant for photothermal treatment of skin cancer.

    abstract::We report the synthesis of a biodegradable liposome gold nanoparticles for curcumin (Au-Lipos Cur NPs) delivery. This entrapped curcumin served as an in situ adjuvant for photothermal therapy. Curcumin was loaded in Au-Lipos NPs with an encapsulation efficiency of ∼70%. The gold coating enabled the NPs to specifically...

    journal_title:International journal of biological macromolecules

    pub_type: 杂志文章

    doi:10.1016/j.ijbiomac.2017.11.163

    authors: Singh SP,Alvi SB,Pemmaraju DB,Singh AD,Manda SV,Srivastava R,Rengan AK

    更新日期:2018-04-15 00:00:00

  • Structure and gene cluster of the O antigen of Escherichia coli F17, a candidate for a new O-serogroup.

    abstract::Escherichia coli F17 isolated from horse feces was studied in respect to the O antigen (O polysaccharide) structure and genetics. The lipopolysaccharide was isolated by phenol-water extraction of bacterial cells and cleaved by mild acid hydrolysis to yield the O polysaccharide, which was studied by sugar analysis and ...

    journal_title:International journal of biological macromolecules

    pub_type: 杂志文章

    doi:10.1016/j.ijbiomac.2018.11.149

    authors: Knirel YA,Ivanov PA,Senchenkova SN,Naumenko OI,Ovchinnikova OO,Shashkov AS,Golomidova AK,Babenko VV,Kulikov EE,Letarov AV

    更新日期:2019-03-01 00:00:00

  • Improved thermal-stability and mechanical properties of type I collagen by crosslinking with casein, keratin and soy protein isolate using transglutaminase.

    abstract::The inferior thermal- stability of collagen hinders its extensive application in food industry, including edible packaging. To improve the thermal- stability and mechanical properties of collagen, we attempted to crosslink collagen with some proteins possessing excellent thermal stability (i. e., casein, keratin and s...

    journal_title:International journal of biological macromolecules

    pub_type: 杂志文章

    doi:10.1016/j.ijbiomac.2017.01.127

    authors: Wu X,Liu Y,Liu A,Wang W

    更新日期:2017-05-01 00:00:00

  • Effect of carboxymethylation on physicochemical, micromeritics and release characteristics of Kyllinga nemoralis starch.

    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

    authors: Paramakrishnan N,Jha S,Kumar KJ

    更新日期:2016-11-01 00:00:00

  • Extraction and characterization of three polysaccharides extracted from Opuntia ficus indica cladodes.

    abstract::The chemical extraction and the characterization of polysaccharides from mucilage (MC), pectin (PC) and total pectic mucilage fraction (TFC) of Opuntia ficus indica cladodes as well as the evaluation of their antioxidant activities was investigated. The FTIR spectroscopic analysis revealed the presence of carboxyl and...

    journal_title:International journal of biological macromolecules

    pub_type: 杂志文章

    doi:10.1016/j.ijbiomac.2016.07.042

    authors: Bayar N,Kriaa M,Kammoun R

    更新日期:2016-11-01 00:00:00

  • Prohibitin as an oxidative stress biomarker in the eye.

    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

    authors: Lee H,Arnouk H,Sripathi S,Chen P,Zhang R,Bartoli M,Hunt RC,Hrushesky WJ,Chung H,Lee SH,Jahng WJ

    更新日期:2010-12-01 00:00:00

  • Preparation of low digestible and viscoelastic tigernut (Cyperus esculentus) starch by Bacillus acidopullulyticus pullulanase.

    abstract::Tigernut starch is an underutilized food resource. In this study, pullulanase (PUL) hydrolysis was used to change its physiochemical properties for different food applications. The content of low digestible fractions, resistant starch and slow digestible starch, in PUL modified tigernut starch significantly increased ...

    journal_title:International journal of biological macromolecules

    pub_type: 杂志文章

    doi:10.1016/j.ijbiomac.2017.04.068

    authors: Li X,Fu J,Wang Y,Ma F,Li D

    更新日期:2017-09-01 00:00:00

  • Comprehensive insights into microbial keratinases and their implication in various biotechnological and industrial sectors: A review.

    abstract::Enormous masses of keratinous wastes are annually accumulated in the environment as byproducts of poultry processing and agricultural wastes. Keratin is a recalcitrant fibrous protein, which represents the major constituent of various keratin-rich wastes, which released into the environment in the form of feathers, ha...

    journal_title:International journal of biological macromolecules

    pub_type: 杂志文章,评审

    doi:10.1016/j.ijbiomac.2020.03.116

    authors: Hassan MA,Abol-Fotouh D,Omer AM,Tamer TM,Abbas E

    更新日期:2020-07-01 00:00:00

  • Chitin hoops obtained from Ommatoiulus sabulosus (Diplopoda, Julidae) used for bovine serum albumin adsorption.

    abstract::A new hoop shaped three dimensional chitin was obtained successfully from the body segment of a diplopod species (Ommatoiulus sabulosus) by following the procedure decolorization, demineralization and deproteinization. Purity of the hoop shaped three-dimensional chitin was proved by FT-IR analysis and chitinase digest...

    journal_title:International journal of biological macromolecules

    pub_type: 杂志文章

    doi:10.1016/j.ijbiomac.2016.09.103

    authors: Šatkauskienė I,Jarusevičiūtė S,Baublys V,Maheta M,Tubelytė V

    更新日期:2017-01-01 00:00:00

  • Date palm (Phoenix dactylifera L.) fruit's polyphenols as potential inhibitors for human amylin fibril formation and toxicity in type 2 diabetes.

    abstract:BACKGROUND:β-Cell death is the key feature of type 2 diabetes mellitus (T2DM). The misfolding of human Islet Amyloid Polypeptide (hIAPP) is regarded as one of the causative factors of T2DM. Recent studies suggested that a diet based on date fruits presents various health benefits, as these fruits are naturally enriched...

    journal_title:International journal of biological macromolecules

    pub_type: 杂志文章

    doi:10.1016/j.ijbiomac.2020.08.080

    authors: Chaari A,Abdellatif B,Nabi F,Khan RH

    更新日期:2020-12-01 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

  • Material properties and cell compatibility of poly(γ-glutamic acid)-keratin hydrogels.

    abstract::Given the great demand for biopolymer and protein-based products from renewable resources, synthesis of a keratin-based hydrogel is presented herein. In this work, a novel hydrogel of poly(γ-glutamic acid) (γ-PGA) and keratin was synthesized through facile EDC·HCl/HOBt chemistry. Since keratin main chain is rich in am...

    journal_title:International journal of biological macromolecules

    pub_type: 杂志文章

    doi:10.1016/j.ijbiomac.2019.10.020

    authors: Bajestani MI,Kader S,Monavarian M,Mousavi SM,Jabbari E,Jafari A

    更新日期:2020-01-01 00:00:00

  • Evaluation of the recombinant turkey pancreatic lipase phospholipase activity: A monolayer study.

    abstract::Classical lipases are well known for being enzymes hydrolysing triacylglycérols as substrate, except the porcine pancreatic lipase (PPL) which was able to hydrolyze phosphatidylcholine. Amino acid sequence alignments revealed that Valine 260 residue in PPL lid, postulated to be responsible for the PPL phospholipase ac...

    journal_title:International journal of biological macromolecules

    pub_type: 杂志文章

    doi:10.1016/j.ijbiomac.2015.08.024

    authors: Bou Ali M,Jallouli R,Gargouri Y,Ben Ali Y

    更新日期:2015-11-01 00:00:00

  • Studies on structure and antioxidant properties of a heteroglycan isolated from wild edible mushroom Lentinus sajor-caju.

    abstract::A water-soluble heteroglycan (PS-I) isolated from the aqueous extract of a wild edible mushroom Lentinus sajor-caju showed average molecular weight ∼1.79×105Da. The structure of the polysaccharide was determined using chemical and 1D/2D NMR experiments. Acid hydrolysis indicated the presence of d-glucose, d-galactose,...

    journal_title:International journal of biological macromolecules

    pub_type: 杂志文章

    doi:10.1016/j.ijbiomac.2017.08.163

    authors: Pattanayak M,Maity P,Samanta S,Sen IK,Manna DK,Nandi AK,Ghosh S,Acharya K,Islam SS

    更新日期:2018-02-01 00:00:00

  • In vitro release and biological activities of Carum copticum essential oil (CEO) loaded chitosan nanoparticles.

    abstract::In recent years, the unparalleled and functional properties of essential oils have been extensively reported, but the sensitivity of essential oils to environmental factors and their poor aqueous solubility have limited their applications in industries. Hence, we encapsulated CEO in chitosan nanoparticles by an emulsi...

    journal_title:International journal of biological macromolecules

    pub_type: 杂志文章

    doi:10.1016/j.ijbiomac.2015.08.010

    authors: Esmaeili A,Asgari A

    更新日期:2015-11-01 00:00:00

  • Biosorbent encapsulation in calcium alginate: Effects of process variables on Cr(VI) removal from solutions.

    abstract::Selected biosorbents, brewers draff and grape waste, have been encapsulated in calcium alginate beads and used for the removal of Cr(VI) from aqueous solutions. The effects of encapsulation variables, including the type of waste, the percentage of waste in the beads and the curing time of the beads in CaCl2, on the di...

    journal_title:International journal of biological macromolecules

    pub_type: 杂志文章

    doi:10.1016/j.ijbiomac.2015.06.032

    authors: Šillerová H,Komárek M,Liu C,Poch J,Villaescusa I

    更新日期:2015-09-01 00:00:00

  • Synthesis and characterization of a new soluble soybean polysaccharide-iron(III) complex using ion exchange column.

    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

    authors: Gao W,Huang Y,He R,Zeng XA

    更新日期:2018-03-01 00:00:00

  • Interpenetrating polymer network (IPN) hydrogel microspheres for oral controlled release application.

    abstract::Interpenetrating polymer network (IPN) hydrogel microspheres of sodium carboxymethyl cellulose (NaCMC) and poly(vinyl alcohol) (PVA) were prepared by water-in-oil (w/o) emulsion crosslinking method for oral controlled release delivery of a non-steroidal anti-inflammatory drug, diclofenac sodium (DS). The microspheres ...

    journal_title:International journal of biological macromolecules

    pub_type: 杂志文章

    doi:10.1016/j.ijbiomac.2011.10.020

    authors: Banerjee S,Siddiqui L,Bhattacharya SS,Kaity S,Ghosh A,Chattopadhyay P,Pandey A,Singh L

    更新日期:2012-01-01 00:00:00

  • Graphite modified sodium alginate hydrogel composite for efficient removal of malachite green dye.

    abstract::Herein, porous sodium alginate/graphite based hybrid hydrogel was fabricated as an effective adsorbent for organic pollutant. Sodium alginate was modified through graft polymerization of acrylic acid and subsequently loaded with graphite powder to enhance its adsorption capability. The synthesized sodium alginate cros...

    journal_title:International journal of biological macromolecules

    pub_type: 杂志文章

    doi:10.1016/j.ijbiomac.2020.01.142

    authors: Verma A,Thakur S,Mamba G,Prateek,Gupta RK,Thakur P,Thakur VK

    更新日期:2020-04-01 00:00:00

  • Effects of supplementation with L. plantarum TN8 encapsulated in alginate-chitosan in broiler chickens.

    abstract::This study was undertaken to investigate the effects of supplementation of probiotic strain Lactobacillus plantarum TN8 encapsulated in sodium alginate-chitosan or a commercial blend of essential oils on total cholesterol, High Density Lipoprotein (HDL), Low Density Lipoprotein (LDL) and growth performance of broiler ...

    journal_title:International journal of biological macromolecules

    pub_type: 杂志文章

    doi:10.1016/j.ijbiomac.2016.05.044

    authors: Trabelsi I,Ktari N,Ben Slima S,Bouchaala K,Ben Salah R

    更新日期:2016-08-01 00:00:00

  • Antioxidant capacities of mannans and glucans are related to their susceptibility of free radical degradation.

    abstract::Microbial and plant polysaccharides in nature are frequently exposed to oxidative burst. They may act as antioxidants buffering the radical attack. This paper presents antioxidant properties of prepared yeast mannans, commercial β-glucans as well as the chemically prepared carboxymethylated β-glucan (CM-glucan). The h...

    journal_title:International journal of biological macromolecules

    pub_type: 杂志文章

    doi:10.1016/j.ijbiomac.2013.07.016

    authors: Machová E,Bystrický S

    更新日期:2013-10-01 00:00:00

  • Common buckwheat-resistant starch as a suitable raw material for food production: A structural and physicochemical investigation.

    abstract::Heat-moisture treatment (HMT) of starch is defined as a physical method to change its properties. Compared with maize and potato, starches from common buckwheat (Xinong9976 and Pingqiao2) were isolated and its morphology and physicochemical properties investigated by scanning electron microscope (SEM), X-ray diffracti...

    journal_title:International journal of biological macromolecules

    pub_type: 杂志文章

    doi:10.1016/j.ijbiomac.2019.12.116

    authors: Gao L,Xia M,Li Z,Wang M,Wang P,Yang P,Gao X,Gao J

    更新日期:2020-02-15 00:00:00

  • Structural, thermal and rheological properties of starches isolated from Indian quinoa varieties.

    abstract::In this study starches isolated from Indian quinoa varieties were examined for physicochemical, morphological, thermal and rheological properties. Among isolated starches V1 showed higher starch yield and lower purity (48.45% and 98.32%) than V2 (41.28 and 98.53%). The amylose content was higher for V1 (12.10%) than V...

    journal_title:International journal of biological macromolecules

    pub_type: 杂志文章

    doi:10.1016/j.ijbiomac.2017.04.027

    authors: Jan KN,Panesar PS,Rana JC,Singh S

    更新日期:2017-09-01 00:00:00

  • Characterization of low-cost glycolipoprotein biosurfactant produced by Lactobacillus plantarum 60 FHE isolated from cheese samples using food wastes through response surface methodology and its potential as antimicrobial, antiviral, and anticancer activi

    abstract::Considering the need of new lactic acid bacteria (LAB) for the production of novel biosurfactant (BS) molecules, the current study brings out a new insight on the exploration of cheese samples for BS producers and process optimization for industrial applications. In view of this, Lactobacillus plantarum 60FHE, Lactoba...

    journal_title:International journal of biological macromolecules

    pub_type: 杂志文章

    doi:10.1016/j.ijbiomac.2020.12.140

    authors: Sakr EAE,Ahmed HAE,Abo Saif FAA

    更新日期:2021-02-15 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

  • Surface and thermal properties of collagen/hyaluronic acid blends containing chitosan.

    abstract::The structure and surface properties of binary and ternary blends containing collagen (Coll), hyaluronic acid (HA) and chitosan (Ch) were investigated by contact angle measurements, thermogravimetric analysis (TGA), scanning electron microscopy (SEM) and atomic force microscopy (AFM). Thin films of Coll/HA and Coll/HA...

    journal_title:International journal of biological macromolecules

    pub_type: 杂志文章

    doi:10.1016/j.ijbiomac.2016.07.055

    authors: Lewandowska K,Sionkowska A,Grabska S,Kaczmarek B

    更新日期:2016-11-01 00:00:00

  • Novel oleyl amine-modified polymannuronic acid micelle loading tacrolimus for therapy of allergic conjunctivitis.

    abstract::Marine polysaccharide-based nanomaterial attracted considerable attention due to its biocompatibility and biodegradability. Here, a novel polymannuronic acid derivative (PM-C18) was synthesized as nanocarrier modified with hydrophobic oleyl amine. Its structure was confirmed by Fourier-transformed infrared spectrometr...

    journal_title:International journal of biological macromolecules

    pub_type: 杂志文章

    doi:10.1016/j.ijbiomac.2017.06.064

    authors: Cong M,Wu Z,Xu X,Yin J,Li H,Zhuang B,Wang C,Zhao X

    更新日期:2017-11-01 00:00:00

  • Preparation of ecofriendly UV-protective food packaging material by starch/TiO2 bio-nanocomposite: Characterization.

    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

    authors: Goudarzi V,Shahabi-Ghahfarrokhi I,Babaei-Ghazvini A

    更新日期:2017-02-01 00:00:00

  • Radiation-mediated molecular weight reduction and structural modification in carrageenan potentiates improved photosynthesis and secondary metabolism in peppermint (Mentha piperita L.).

    abstract::In an attempt to gain insights into the possible relationship between the irradiation-mediated molecular weight reduction and structural modification and the growth-promotion activity, characterization of the polysaccharide before and after irradiation was carried out through Fourier Transform Infrared (FT-IR), Ultrav...

    journal_title:International journal of biological macromolecules

    pub_type: 杂志文章

    doi:10.1016/j.ijbiomac.2018.12.022

    authors: Ahmad B,Jahan A,Sadiq Y,Shabbir A,Jaleel H,Khan MMA

    更新日期:2019-03-01 00:00:00