keyword
MENU ▼
Read by QxMD icon Read
search

guar gum

keyword
https://www.readbyqxmd.com/read/28533304/modulation-of-the-gut-microbiota-impacts-non-alcoholic-fatty-liver-disease-a-potential-role-for-bile-acids
#1
Aafke Wf Janssen, Tom Houben, Saeed Katiraei, Wieneke Dijk, Lily Boutens, Nieke van der Bolt, Zeneng Wang, J Mark Brown, Stanley L Hazen, Stéphane Mandard, Ronit Shiri-Sverdlov, Folkert Kuipers, Ko Willems van Dijk, Jacques Vervoort, Rinke Stienstra, Guido Jej Hooiveld, Sander Kersten
Non-alcoholic fatty liver disease (NAFLD) is rapidly becoming the most common liver disease worldwide, yet the pathogenesis of NAFLD is only partially understood. Here, we investigated the role of the gut bacteria in NAFLD by stimulating the gut bacteria via feeding mice the fermentable dietary fiber guar gum and suppressing the gut bacteria via chronic oral administration of antibiotics. Guar gum feeding profoundly altered the gut microbiota composition, in parallel with reduced diet-induced obesity and improved glucose tolerance...
May 22, 2017: Journal of Lipid Research
https://www.readbyqxmd.com/read/28522007/guar-gum-benzoate-nanoparticle-reinforced-gelatin-films-for-enhanced-thermal-insulation-mechanical-and-antimicrobial-properties
#2
Sonia Kundu, Aatrayee Das, Aalok Basu, Md Farooque Abdullah, Arup Mukherjee
This work relates to guar gum benzoate self assembly nanoparticles synthesis and nano composite films development with gelatin. Guar gum benzoate was synthesized in a Hofmeister cation guided homogeneous phase reaction. Self assembly polysaccharide nanoparticles were prepared in solvent displacement technique. Electron microscopy and DLS study confirmed uniform quasi spherical nanoparticles with ζ-potential - 28.7mV. Nanocomposite films were further developed in gelatin matrix. The film capacity augmenting due to nanoparticles incorporation was noteworthy...
August 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28506726/influence-of-xanthan-guar-cmc-and-gum-acacia-on-functional-properties-of-water-chestnut-trapa-bispinosa-starch
#3
Zubala Lutfi, Anjum Nawab, Feroz Alam, Abid Hasnain, Syed Zia Haider
This study was performed to determine the effect of xanthan, guar, CMC and gum acacia on functional and pasting properties of starch isolated from water chestnut (Trapa bispinosa). Morphological properties of water chestnut starch with CMC were studied by scanning electron microscopy (SEM). The addition of hydrocolloids significantly enhanced the solubility of water chestnut starch (WCS) while reduced swelling power and freeze-thaw stability. The hydrophilic tendency of WCS was increased by xanthan gum; however, with addition of gum acacia it decreased significantly...
May 12, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28504182/oil-water-interfaces-of-guar-gum-based-biopolymer-hydrogels-and-application-to-their-separation
#4
Lei Dai, Baobin Wang, Xingye An, Liqiang Zhang, Avik Khan, Yonghao Ni
Oily wastewater treatment has become a significant research subject due to potential environmental related applications, e.g., oil spill remedy process. In this paper, a natural polymer based hydrogel, prepared from guar gum (GG) and metaborate, was coated onto a stainless steel mesh, and the as-prepared hydrogel-coated material was applied for oil/water separation. The strong hydrophilic GG hydrogel imparted excellent underwater oleophobicity and ultra-low oil adhesion. The results proved that the as-prepared GG hydrogel-coated material possessed excellent self-cleaning property and high oil/water separation efficiency...
August 1, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28504160/effect-of-molecular-weight-on-the-ability-of-guar-gum-to-enhance-weak-gel-rheology-of-microdispersed-oxidised-cellulose-mdoc
#5
Xuehai Xie, Agoub A Agoub, Edwin R Morris
MDOC comprises small, essentially insoluble, particles which associate to form "weak gel" networks at concentrations above ∼4wt%. Association is promoted by guar gum, causing an increase in G' at low levels of addition and a decrease at higher concentrations, due to excessive aggregation of the MDOC particles. For guar gum samples with molecular weights ranging from ∼60 to ∼1800kDa, we found that the concentration required to give maximum G' for 5wt% dispersions of MDOC increased systematically from ∼0...
August 1, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28504138/hybrid-pectin-based-biosorbents-for-zinc-ions-removal
#6
Agata Jakóbik-Kolon, Joanna Bok-Badura, Krzysztof Karoń, Krzysztof Mitko, Andrzej Milewski
In this paper, a set of the hybrid biosorbents, made of pectin and polysaccharide additives (arabic, tragacanth, guar, karaya, xanthan, gellan, carob gums, agar-agar) or lecithin (phospholipid), was investigated and tested for zinc ions removal. The immobilization of the polysaccharides into the pectin matrix was proved by the IR spectroscopy. The structure of the working biosorbents was observed in SEM micrographs. The influence of the additive type and pH on the sorption properties and swelling index was investigated...
August 1, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28481524/alginate-beads-containing-lactase-stability-and-microstructure
#7
Maria Victoria Victoria Traffano Schiffo, Tatiana Rocío Aguirre Calvo, Marta Castro-Giraldez, Pedro Jose Fito, Patricio R Santagapita
β-galactosidase (lactase) is a widely used enzyme in food industry; however, it has low stability against thermal and mechanical treatments. Due to this, the purpose of present research was to analyze the encapsulation of lactase in alginate-Ca(II) beads in order to maintain its enzymatic activity towards freezing, freezing/thawing and storage. Also, the effect of the addition of trehalose, arabic and guar gums and its influence in the microstructure as well as in thermal properties and molecular mobility were studied...
May 8, 2017: Biomacromolecules
https://www.readbyqxmd.com/read/28469616/guar-gum-stimulates-biogenic-sulfide-production-at-elevated-pressures-implications-for-shale-gas-extraction
#8
Sophie L Nixon, Leanne Walker, Matthew D T Streets, Bob Eden, Christopher Boothman, Kevin G Taylor, Jonathan R Lloyd
Biogenic sulfide production is a common problem in the oil industry, and can lead to costly hydrocarbon processing and corrosion of extraction infrastructure. The same phenomenon has recently been identified in shale gas extraction by hydraulic fracturing, and organic additives in fracturing fluid have been hypothesized to stimulate this process. Constraining the relative effects of the numerous organic additives on microbial metabolism in situ is, however, extremely challenging. Using a bespoke bioreactor system we sought to assess the potential for guar gum, the most commonly used gelling agent in fracturing fluids, to stimulate biogenic sulfide production by sulfate-reducing microorganisms at elevated pressure...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28469548/effects-of-dietary-fibers-with-high-water-binding-capacity-and-swelling-capacity-on-gastrointestinal-functions-food-intake-and-body-weight-in-male-rats
#9
Chengquan Tan, Hongkui Wei, Xichen Zhao, Chuanhui Xu, Jian Peng
Objective: The aim of this study was to investigate the effects of supplementation of dietary soluble fibers with high water-binding capacity (WBC) and swelling capacity (SC) on gastrointestinal tract mass, physicochemical properties of digesta, gastrointestinal mean retention time (MRT), body weight, and food intake in male rats. Methods: Thirty-two male Sprague-Dawley rats were randomized to four equal groups and fed the control diet or diet containing 2% konjac flour (KF), pregelatinized waxy maize starch plus guar gum (PWMS+GG), andPWMS plus xanthan gum (PWMS+XG) for three weeks...
2017: Food & Nutrition Research
https://www.readbyqxmd.com/read/28457450/borax-cross-linked-guar-gum-hydrogels-as-potential-adsorbents-for-water-purification
#10
Nandkishore Thombare, Usha Jha, Sumit Mishra, M Z Siddiqui
With the aim to explore new adsorbents for water purification, guar gum based hydrogels were synthesized by cross-linking with borax at different percentage. The cross-linking was confirmed through characterization by FTIR spectroscopy, SEM morphology, thermal studies and water absorption capacity. To examine the adsorption/absorption performance of different grades of hydrogels, their flocculation efficiency was studied in kaolin suspension at different pH by standard jar test procedure. The flocculation efficiency of the test materials was compared with the commercially used coagulant, alum and also residues of Al and K left in the treated water were comparatively studied...
July 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28451856/growth-performance-of-broilers-fed-on-sprouted-roasted-guar-bean-cyamopsis-tetragonoloba-based-diets
#11
James Madzimure, Lorraine Muchapa, Lovemore Gwiriri, Archibold G Bakare, Lawrence Masaka
In a completely randomized block design with 96 Cobb-500 broilers, a study was conducted to evaluate the potential of dietary inclusion of sprouted then roasted guar bean in broiler diets. The 96 male day-old broiler chicks, blocked by pen into equal weight groups of six chicks replicated four times per treatment, were randomly allocated to treatment diets containing graded levels of sprouted then roasted guar bean meal (GBM) at 0, 50, 100 and 150 g kg(-1) inclusion level. The guar bean was sprouted and roasted to reduce guar gum effect...
April 27, 2017: Tropical Animal Health and Production
https://www.readbyqxmd.com/read/28407909/effect-of-temperature-and-relative-humidity-on-stability-following-simulated-gastro-intestinal-digestion-of-microcapsules-of-bordo-grape-skin-phenolic-extract-produced-with-different-carrier-agents
#12
Luiza Siede Kuck, Júlia Lerina Wesolowski, Caciano Pelayo Zapata Noreña
The stability of microparticles of Bordo grape skin aqueous extract, produced by spray-drying and freeze-drying using polydextrose (5%) and partially hydrolyzed guar gum (5%), was evaluated under accelerated conditions (75 and 90% relative humidity, at 35, 45, and 55°C for 35days) and simulated gastrointestinal digestion. The temperature had a significant effect on the reduction of phenolics content, with retentions varying from 82.5 to 93.5%. The retention of total monomer anthocyanins were in the range of 3...
September 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28402599/obtention-and-characterization-of-dried-gels-prepared-with-whey-proteins-honey-and-hydrocolloids-mixture
#13
Ana C Rodriguez, Martín R Torrez, Alba S Navarro, Diego K Yamul
BACKGROUND: Large amounts of honey and liquid whey derived from the dairy industry are produced in Argentina. Honey is exported in bulk and whey is transformed into whey protein concentrates and isolates. The objective of this work was to investigate the effect of pH, composition and storage time on the properties of dried gels with honey, whey proteins and hydrocolloids. RESULTS: Colour properties varied according to pH and composition. The fracture stress of the dried gels prepared with corn starch was higher than those prepared with guar gum in all conditions assayed...
April 12, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28401089/rheological-differences-of-waxy-barley-flour-dispersions-mixed-with-various-gums
#14
Chong-Yeon Kim, Byoungseung Yoo
Rheological properties of waxy barley flour (WBF) dispersions mixed with various gums (carboxyl methyl celluleose, guar gum, gum arabic, konjac gum, locust bean gum, tara gum, and xanthan gum) at different gum concentrations were examined in steady and dynamic shear. WBF-gum mixture samples showed a clear trend of shear-thinning behavior and had a non-Newtonian nature with yield stress. Rheological tests indicated that the flow and dynamic rheological parameter (apparent viscosity, consistency index, yield stress, storage modulus, and loss modulus) values of WBF dispersions mixed with gums, except for gum arabic, were significantly higher than those of WBF with no gum, and also increased with an increase in gum concentration...
March 2017: Preventive Nutrition and Food Science
https://www.readbyqxmd.com/read/28372153/synthesis-and-study-the-properties-of-stnps-gum-nanoparticles-for-salvianolic-acid-b-oral-delivery-system
#15
Xiaojing Li, Shengju Ge, Jie Yang, Ranran Chang, Caifeng Liang, Liu Xiong, Mei Zhao, Man Li, Qingjie Sun
To fabricate stable sized and shaped controlled release delivery systems for salvianolic acid B (Sal B), different food gums were individually added to short-chain glucan solution to prepare starch nanoparticles (StNPs)/gum nanocomposites by self-assembly, and Sal B was embedded in situ. The results showed that size of StNPs was reduced to ca. 45nm with the addition of chitosan and rosin, which decreased by over 50% than that of StNPs without the gum. The StNPs/guar gum nanocomposites had the largest size (109...
August 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28370113/structure-influence-on-mechanical-and-acoustic-properties-of-freeze-dried-gels-obtained-with-the-use-of-hydrocolloids
#16
Agnieszka Ciurzyńska, Agata Marzec, Arleta Mieszkowska, Andrzej Lenart
The influence of the structure formed by the type of hydrocolloids (low-methoxyl pectin, the mixture of xanthan gum, and locust bean gum, and mixture of xanthan gum, and guar gum) and the aeration time (3, 5, 7, and 9 min) on textural properties of freeze-dried gels were investigated. The hardest texture generating the strongest acoustic emission was obtained by freeze-dried pectin gel, characterised by the lowest porosity and the largest pore diameter. Aeration time significantly affected mechanical and acoustic properties of the pectin gel lyophilisate...
April 2017: Journal of Texture Studies
https://www.readbyqxmd.com/read/28363528/determination-of-carrageenan-by-means-of-photometric-titration-with-methylene-blue-and-toluidine-blue-dyes
#17
Dorota Ziółkowska, Agnieszka Kaniewska, Jan Lamkiewicz, Alexander Shyichuk
A new approach to carrageenan quantitation was described. The method consists in titration of carrageenan solution by Methylene Blue dye or Toluidine Blue dye solution until a certain absorbance value. The optimal wavelengths are 660nm and 640nm when titrating with Methylene Blue dye and Toluidine Blue dye, respectively. Rectilinear calibration plots (R(2)>0.996) provide carrageenan determination in the concentration range from 2 to 60mg/L with relative standard deviation from 1 to 5%. The proposed method is simple and feasible in use due to optical dip probe providing in situ absorbance measurements...
June 1, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28359894/characterisation-and-solution-properties-of-a-galactomannan-from-bauhinia-monandra-seeds
#18
Louis M Nwokocha, Chandra Senan, Peter A Williams, Madhav P Yadav
This study reports on the chemical and physicochemical properties of the polysaccharide isolated from Bauhinia monandra seeds. The seeds were found to contain 17.8% polysaccharide which consisted predominantly of galactose and mannose. The Man/Gal ratio was found to be approximately 4:1and the average molar mass was 2.54×10(5)g/mol. The extracted material was also found to contain a small amount of protein (5.35%). The galactomannan produced highly viscous solution; the viscosity-shear rate profile was best described by the Williamson model...
March 27, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28330208/purification-and-characterization-of-%C3%AE-mannanase-from-aspergillus-terreus-and-its-applicability-in-depolymerization-of-mannans-and-saccharification-of-lignocellulosic-biomass
#19
Hemant Soni, Hemant Kumar Rawat, Brett I Pletschke, Naveen Kango
Aspergillus terreus FBCC 1369 was grown in solid-state culture under statistically optimized conditions. β-Mannanase was purified to apparent homogeneity by ultrafiltration, anion exchange and gel filtration chromatography. A purification factor of 10.3-fold was achieved, with the purified enzyme exhibiting specific activity of 53 U/mg protein. The purified β-mannanase was optimally active at pH 7.0 and 70 °C and displayed stability over a broad pH range of 4.0-8.0 and a 30 min half-life at 80 °C. The molecular weight of β-mannanase was calculated as ~49 kDa by SDS-PAGE...
December 2016: 3 Biotech
https://www.readbyqxmd.com/read/28284696/utilizing-whey-protein-isolate-and-polysaccharide-complexes-to-stabilize-aerated-dairy-gels
#20
Emily O'Chiu, Bongkosh Vardhanabhuti
Heated soluble complexes of whey protein isolate (WPI) with polysaccharides may be used to modify the properties of aerated dairy gels, which could be formulated into novel-textured high-protein desserts. The objective of this study was to determine the effect of polysaccharide charge density and concentration within a WPI-polysaccharide complex on the physical properties of aerated gels. Three polysaccharides having different degrees of charge density were chosen: low-methoxyl pectin, high-methoxyl type D pectin, and guar gum...
May 2017: Journal of Dairy Science
keyword
keyword
37248
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"