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1. Mussel-Inspired Nanocomposite Hydrogel-Based Electrodes with Reusable and Injectable Properties for Human Electrophysiological Signals Detection

Author:
Pan, Xiaofeng; Wang, Qinhua; He, Peng; Liu, Kai; Ni, Yonghao; Ouyang, Xinhua; Chen, Lihui; Huang, Liulian; Wang, Hongping; Tan, Yue
Source:
ACS sustainable chemistry & engineering 2019 v.7 no.8 pp. 7918-7925
ISSN:
2168-0485
Subject:
guar gum,   etc   ; adhesion; borax; cellulose nanofibers; electronics; electrophysiology; glycerol; humans; hydrogels; microelectrodes; nanocomposites;     Show all 11 Subjects
Abstract:
... Recently, ion-conducting hydrogels have received much attention in the preparation of noninvasive electronics. However, there have been few studies on the simultaneous integration of multiproperties of hydrogels to meet the actual needs of flexible electrodes. Herein, we prepared mussel-inspired proanthocyanins (PC)-coated cellulose nanofibrils (CNF) nanocomposites, which were dispersed in the gua ...
DOI:
10.1021/acssuschemeng.9b00579

2. Characterization of synthetic porous media using non‐Newtonian fluids: experimental evidence

Author:
Atallah, N. M.; Abou Najm, M. R.
Source:
European journal of soil science 2019 v.70 no.2 pp. 257-267
ISSN:
1351-0754
Subject:
guar gum,   etc   ; hydrodynamics; models; oil fields; porosity; porous media; statistical analysis;     Show all 7 Subjects
Abstract:
... The characterization of pore structures is required for a broad range of applications, from modelling flow dynamics to understanding petroleum reservoir performance. This research was based on a theoretical framework proposed by Abou Najm and Atallah for improved characterization of pore structures using Newtonian and non‐Newtonian fluids. Here, we report the first experimental evidence of the abi ...
DOI:
10.1111/ejss.12746

3. Enhanced strength, stiffness and elongation potential of paper by spray addition of polysaccharides

Author:
Strand, Anders; Kouko, Jarmo; Oksanen, Antti; Salminen, Kristian; Ketola, Annika; Retulainen, Elias; Sundberg, Anna
Source:
Cellulose 2019 v.26 no.5 pp. 3473-3487
ISSN:
0969-0239
Subject:
guar gum,   etc   ; air; alginates; cellulose; chitosan; drying; mechanical properties; models; packaging; paper; permeability; shrinkage;     Show all 12 Subjects
Abstract:
... The effects of spray additions of alginate, cationic guar gum, or chitosan on paper properties were determined. The aim of this study was to enhance the mechanical properties of papers after unrestrained drying, while maintaining or increasing the extraordinarily high elongation potential of these papers. The mechanical characteristics of the different polysaccharides were determined by tensile te ...
DOI:
10.1007/s10570-019-02308-0

4. The surface characteristics of biopolymer-coated tomato and cucumber epicarps: effect of guar, Persian and tragacanth gums

Author:
Mostafavi, Fatemeh Sadat
Source:
Journal of food measurement & characterization 2019 v.13 no.1 pp. 840-847
ISSN:
2193-4126
Subject:
guar gum,   etc   ; adhesion; coatings; cohesion; cucumbers; fruits; gum tragacanth; mathematical models; surface tension; tomatoes; viscosity;     Show all 11 Subjects
Abstract:
... The present study introduces guar gum (GG), tragacanth gum (TG) and Persian gum (PG) as novel potential coating materials for fruits and vegetables. Coating solutions of these gums were prepared at different concentrations and their surface properties for coating cucumber and tomato were investigated. Results showed that tomato and cucumber epicarps were both low-energy surfaces with surface tensi ...
DOI:
10.1007/s11694-018-9996-9

5. Synthesis of hydrazine-grafted guar gum material for the highly effective removal of organic dyes

Author:
Duan, Ming; Ma, Junchi; Fang, Shenwen
Source:
Carbohydrate polymers 2019
ISSN:
0144-8617
Subject:
guar gum,   etc   ; adsorption; ambient temperature; dyes; oxidation; sorption isotherms; water treatment;     Show all 7 Subjects
Abstract:
... The galacylhydrazine modified guar gum (GG-GH) was prepared through oxidation and condensation. GG-GH demonstrated highly efficient removing performance for organic dyes in large volume of water sample solutions, a rapid uptake of dyes was observed and the equilibrium is achieved in 0.5 h. The maximum adsorption capacity for MB, RhB, MeO and BrB were 1522.2 mg g-1, 1359.96 mg g-1, 868.83 mg g-1and ...
DOI:
10.1016/j.carbpol.2019.01.112

6. Effect of guar gum on the physicochemical properties and in vitro digestibility of lotus seed starch

Author:
Zheng, Mingjing; You, Qingxiang; Lin, Yan; Lan, Fengyi; Luo, Menglin; Zeng, Hongliang; Zheng, Baodong; Zhang, Yi
Source:
Food chemistry 2019 v.272 pp. 286-291
ISSN:
0308-8146
Subject:
guar gum,   etc   ; crystal structure; hydrophilicity; in vitro digestibility; in vitro digestion; resistant starch; swelling (materials); viscosity;     Show all 8 Subjects
Abstract:
... The effect of guar gum (GG) on the physicochemical properties and digestibility of lotus seed starch (LS) subjected to autoclaving-cooling were investigated. Compared to LS alone, LS with 0.03% or 0.15% GG displayed higher crystallinity and short-range order, resulting in the formation of a denser crystal structure. It might contribute to the reduced swelling power, final viscosity, and setback vi ...
DOI:
10.1016/j.foodchem.2018.08.029

7. Viscoelastic properties of aqueous guar gum derivative solutions under large amplitude oscillatory shear (LAOS)

Author:
Szopinski, Daniel; Luinstra, Gerrit A.
Source:
Carbohydrate polymers 2016 v.153 pp. 312-319
ISSN:
0144-8617
Subject:
guar gum,   etc   ; deformation; viscoelasticity;     Show all 3 Subjects
Abstract:
... The industrial relevant nonlinear viscoelastic properties of aqueous carboxymethyl hydroxypropyl guar gum (CMHPG) and non-ionic hydroxypropyl guar gum (HPG) solutions between semi-dilute and concentrated solution state were investigated by large amplitude oscillatory shear flow (LAOS). Aqueous CMHPG and HPG solutions enter the nonlinear flow regime at deformations γ0>100%. The nonlinear stress wav ...
DOI:
10.1016/j.carbpol.2016.07.095

8. A high-volumetric-capacity and high-areal-capacity ZnCo₂O₄ anode for Li-ion batteries enabled by a robust biopolymer binder

Author:
Liu, Jie; Xuan, Yuxue; Galpaya, Dilini G. D.; Gu, Yuanxiang; Lin, Zhan; Zhang, Shanqing; Yan, Cheng; Feng, Shouhua; Wang, Lei
Source:
Journal of materials chemistry 2018 v.6 no.40 pp. 19455-19462
ISSN:
2050-7496
Subject:
guar gum,   etc   ; anodes; biopolymers; chemistry; lithium batteries; mechanical properties; thermoplastics;     Show all 7 Subjects
Abstract:
... Constructing high-areal-capacity anodes with high loading for Li-ion batteries is still an enormous challenge, due to the drastic volume change of large-capacity anode materials during cycling. The conventional PVDF binder system fails to withstand the degradation of high-loading electrodes. Therefore, advanced binders are urgently required. Herein, for the first time, the guar gum (GG) biopolymer ...
DOI:
10.1039/c8ta07840h

9. Facile synthesis of guar gum gel for the separation of metallic and semiconducting single-wall carbon nanotubes

Author:
Wang, Guowei; Wei, Xiaojun; Tanaka, Takeshi; Kataura, Hiromichi
Source:
Carbon 2018 v.129 pp. 745-749
ISSN:
0008-6223
Subject:
guar gum,   etc   ; carbon; carbon nanotubes; chromatography; gels; semiconductors;     Show all 6 Subjects
Abstract:
... Gel column chromatography is regarded as one of the most efficient methods for the large-scale separation of carbon nanotubes. However, the high cost of commercially available gel medium is a serious problem for industrial-scale production. A low-cost gel is therefore highly desired. In this study, we report a facile method to synthesize guar gum gel for the metal/semiconductor separation of carbo ...
DOI:
10.1016/j.carbon.2017.12.064

10. Effect of guar gum and salt concentrations on drag reduction and shear degradation properties of turbulent flow of water in a pipe

Author:
Sokhal, Kamaljit Singh; Gangacharyulu, Dasaroju; Bulasara, Vijaya Kumar
Source:
Carbohydrate polymers 2018 v.181 pp. 1017-1025
ISSN:
0144-8617
Subject:
guar gum,   etc   ; biopolymers; potassium chloride; salt concentration; turbulent flow;     Show all 5 Subjects
Abstract:
... Concentrated solutions of guar gum in water (1000–3000ppm) with and without KCl salt (1000–4000ppm) were injected near the wall for a short period (2.5min) to investigate their effect on drag reduction in turbulent flow of water through a pipe (Re≈17000–45000). Relative to bulk solution, the concentrations of polymer and salt were 50–150ppm and 50–200ppm, respectively. A drag reduction of 71.45% w ...
DOI:
10.1016/j.carbpol.2017.11.048

11. Functional and structural effects of hydrocolloids on Ca(II)-alginate beads containing bioactive compounds extracted from beetroot

Author:
Aguirre Calvo, Tatiana Rocio; Santagapita, Patricio R.; Perullini, Mercedes
Source:
Lebensmittel-Wissenschaft + [i.e. und] Technologie 2019 v.111 pp. 520-526
ISSN:
0023-6438
Subject:
guar gum,   etc   ; alginates; beets; bioactive compounds; calcium; encapsulation; food waste; functional properties; gelation; hydrocolloids; hydrogels; leaves; microstructure; pectins; polyphenols; sucrose;     Show all 16 Subjects
Abstract:
... In the present research, valuable bioactives such as betacyanin and polyphenols of beetroot leaf and stem (a food waste) were extracted and encapsulated in Ca(II)-alginate beads, using sucrose, arabic and guar gums, and low and high methoxyl pectins as excipients. A complete SAXS evaluation from the molecular to the supramolecular changes (1–100 nm) produced by excipients and extracts on the micro ...
DOI:
10.1016/j.lwt.2019.05.047

12. Fabrication of dual network self-healing alginate/guar gum hydrogels based on polydopamine-type microcapsules from mesoporous silica nanoparticles

Author:
Rao, Zhilu; Liu, Shumin; Wu, Ruiyue; Wang, Guanglin; Sun, Zhixiang; Bai, Liangjiu; Wang, Wenxiang; Chen, Hou; Yang, Huawei; Wei, Donglei; Niu, Yuzhong
Source:
International journal of biological macromolecules 2019 v.129 pp. 916-926
ISSN:
0141-8130
Subject:
guar gum,   etc   ; ambient temperature; cross-linking reagents; ferric chloride; glutaraldehyde; hydrogels; nanoparticles; porous media; silica; sodium alginate;     Show all 10 Subjects
Abstract:
... In this manuscript, dual network self-healing alginate/guar gum hydrogels with polydopamine-type microcapsules from mesoporous silica nanoparticles were facilely prepared through one-pot method. Glutaraldehyde (GA) was used as a crosslinking agent to crosslink guar gum and sodium alginate, respectively. Metal−ligand interactions as reversible non-covalent bonds make the dual network hydrogels have ...
DOI:
10.1016/j.ijbiomac.2019.02.089

13. About the endothermal transitions of galactomannans: A multi-analytical DSC, LF-1H NMR and DMA study

Author:
Busch, Verónica M.; Santagapita, Patricio R.; Díaz-Calderón, Paulo; Enrione, Javier I.; Buera, M. Pilar
Source:
Carbohydrate polymers 2019 v.211 pp. 31-38
ISSN:
0144-8617
Subject:
guar gum,   etc   ; biopolymers; differential scanning calorimetry; foods; galactomannans; glass transition; mechanical properties; nuclear magnetic resonance spectroscopy; temperature; water content;     Show all 10 Subjects
Abstract:
... The thermal transitions of biopolymers were subject of great discussion in the 90s due to their relevance in structure development during processing and stability on storage. In the present work two galactomannans, vinal gum and guar gum, were evaluated by DSC, DMA and LF-1H NMR in order to compare them, establishing their potential operational application range and promoting the use of the non-co ...
DOI:
10.1016/j.carbpol.2019.01.092

14. Characterization of gluten free flatbread: quality improvement by the addition of hydrocolloids and emulsifiers using simplex centroid design

Author:
Patil, Sonal; Arya, S. S.
Source:
Journal of food measurement & characterization 2019 v.13 no.1 pp. 821-830
ISSN:
2193-4126
Subject:
guar gum,   etc   ; additives; chewiness; emulsifiers; flat breads; gluten-free dough; glycerol; hardness; hydrocolloids; sodium; stickiness; texture; xanthan gum;     Show all 13 Subjects
Abstract:
... The study aimed to investigate effects of addition of hydrocolloids (guar gum, xanthan gum) and emulsifiers (sodium stearoyl 2 lactylate, glycerol monostearate) on the quality of formulated gluten free dough and flatbread. Simplex centroid design was employed for the purpose. Dough textural parameters (dough stickiness, dough strength, gumminess, elasticity) and flatbread characteristics (tear for ...
DOI:
10.1007/s11694-018-9994-y

15. Influence of guar gum on the baking quality of gluten‐free cheese bread made using frozen and chilled dough

Author:
Zapata, Francisco; Zapata, Estefanía; Rodríguez‐Sandoval, Eduardo
Source:
International journal of food science & technology 2019 v.54 no.2 pp. 313-324
ISSN:
0950-5423
Subject:
guar gum,   etc   ; baking quality; cheeses; consumer acceptance; freezing; frozen dough; gluten-free foods; hardness; saltiness; sensory evaluation; texture;     Show all 11 Subjects
Abstract:
... The aim of the study was to assess the effect of guar gum on the quality and textural properties of gluten‐free (GF) cheese bread made using chilled and frozen GF cheese dough. The guar gum addition was at 3.5% (G3.5), 4% (G4) and 4.5% (G4.5) levels, based on the weight of the cheese in the product. Samples of frozen dough with 3.5% guar gum and of chilled dough with 4.5% guar gum were chosen for ...
DOI:
10.1111/ijfs.13936

16. Study on the ability of partially hydrolyzed guar gum to modulate the gut microbiota and relieve constipation

Author:
Fu, Xiaodan; Li, Rong; Zhang, Tan; Li, Meng; Mou, Haijin
Source:
Journal of food biochemistry 2019 v.43 no.2 pp. e12715
ISSN:
0145-8884
Subject:
guar gum,   etc   ; Bacteroidetes; Desulfovibrio; beta-mannosidase; constipation; defecation; dietary fiber; hydrolysis; intestinal microorganisms; intestines; mice; models; short chain fatty acids;     Show all 13 Subjects
Abstract:
... The aim of this study was to evaluate the effects of high‐ (HHGG, Mw 10,000–30,000 Da) and medium‐molecular‐weight (MHGG, Mw 2,000–10,000 Da) partially hydrolyzed guar gum (PHGG) on modulation of gut microbiota and relief of constipation in mice. Mice were treated with galacto‐oligosaccharide (GOS) and xylo‐oligosaccharide (XOS) at a dose of 1 g/kg bw as positive controls. Low‐ and high‐dose HHGG ...
DOI:
10.1111/jfbc.12715

17. Self-healing hydroxypropyl guar gum/poly (acrylamide-co-3-acrylamidophenyl boronic acid) composite hydrogels with yield phenomenon based on dynamic PBA ester bonds and H-bond

Author:
Lu, Xueting; Li, Yangyang; Feng, Wei; Guan, Shuang; Guo, Peipei
Source:
Colloids and surfaces 2019 v.561 pp. 325-331
ISSN:
0927-7757
Subject:
guar gum,   etc   ; acrylamides; boronic acids; chemical bonding; colloids; composite polymers; crosslinking; hydrogels; pH; polymerization; strength (mechanics); synergism;     Show all 12 Subjects
Abstract:
... In this report, the self-healable hydrogels containing hydroxypropyl guar gum (HPG), acrylamide (AM) and 3-acrylamidophenylboronic acid (AAPBA) were prepared through a facile strategy. The double bond in AAPBA could polymerize with AM to form copolymers. Moreover, the boronic acid groups of AAPBA can interact with cis-diol of HPG which make AAPBA act not only polymer but cross-linkers simultaneous ...
DOI:
10.1016/j.colsurfa.2018.10.071

18. Effect of various hydrocolloids on the physical and fermentation properties of dough

Author:
Li, Jinxin; Zhu, Yunping; Yadav, Madhav P.; Li, Jinlong
Source:
Food chemistry 2019 v.271 pp. 165-173
ISSN:
0308-8146
Subject:
guar gum,   etc   ; chemical bonding; dough; dough quality; fermentation; gluten; hydrocolloids; konjac mannan; locust bean gum; pasting properties; pectins; viscosity;     Show all 12 Subjects
Abstract:
... Sixteen hydrocolloids (12 carbohydrate-origin and 4 protein-origin hydrocolloids) at several concentrations were added to dough and their rheological, pasting and fermentation properties were studied. We found that 0.2–1% guar gum (GG) and locust bean gum (LBG) resulted in more strengthened doughs. But 0.2–1% pectin and konjac glucomannan (KGM) yielded weaker dough. The chemical interactions study ...
Handle:
10113/6119706
DOI:
10.1016/j.foodchem.2018.07.192

19. Non-thermal plasma assisted surface nano-textured carboxymethyl guar gum/chitosan hydrogels for biomedical applications

Author:
Dalei, Ganeswar; Das, Subhraseema; Das, Smruti Prava
Source:
RSC advances 2019 v.9 no.3 pp. 1705-1716
ISSN:
2046-2069
Subject:
guar gum,   etc   ; Escherichia coli; adverse effects; biocompatibility; biodegradability; biofilm; chitosan; diclofenac; drugs; erythrocytes; gases; hydrogels; medicine; oxygen; pH; wettability;     Show all 16 Subjects
Abstract:
... Smart hydrogels comprising carboxymethyl guar gum and chitosan (CMGG/CS) have been fabricated using tetraethyl orthosilicate as the crosslinker. To render the hydrogels an improved biological efficacy, non-thermal plasma assisted surface modification have been performed using Ar, O₂ and a mixture of Ar and O₂ gases. Enhanced surface wettability was witnessed post-plasma treatment. AFM analyses rev ...
DOI:
10.1039/c8ra09161g

20. Water-holding capacity and plant growth in compost-based substrates modified with polyacrylamide, guar gum or bentonite

Author:
Paradelo, R.; Basanta, R.; Barral, M.T.
Source:
Scientia horticulturae 2019 v.243 pp. 344-349
ISSN:
0304-4238
Subject:
guar gum,   etc   ; Lolium multiflorum; MSW composts; Pinus; bark; bentonite; greenhouses; plant growth; polyacrylamide; seed germination; vermicomposts; water holding capacity;     Show all 12 Subjects
Abstract:
... Humectant agents are used to improve seed germination and survival in hard environments through their effect on water-holding capacity. In this work, we have evaluated the combined effect of substrate composition and humectant agents on the water-holding capacity and growth of Lolium multiflorum in different mixtures based on municipal solid waste composts. A commercial polyacrylamide, bentonite o ...
DOI:
10.1016/j.scienta.2018.08.046