Search Within


Applied Filters:
Showing 1-30 of 207 results for "448869" within Papers
Kyo-Sung Chae et al.
Food science and biotechnology, 27(3), 631-639 (2018-09-29)
The field cricket (Gryllus bimaculatus) is commonly consumed as food in different parts of the world. This study was performed to characterize the chitosan extracted from crickets and to assess its potential use to the growing functional market. The degree
Juan Pablo Loyola-Rodríguez et al.
Journal of applied biomaterials & functional materials, 17(3), 2280800019851771-2280800019851771 (2019-08-03)
The main microorganism associated with the failure of endodontic treatments is Enterococcus faecalis. Although several endodontic therapeutics have demonstrated antimicrobial activity against E. faecalis, the antimicrobial effectiveness of chitosan (CsNPs) and silver nanoparticles (AgNPs) included into conventional endodontic sealers for
Qianqian Lyu et al.
The Biochemical journal, 461(2), 335-345 (2014-04-29)
Chitosanase is able to specifically cleave β-1,4-glycosidic bond linkages in chitosan to produce a chito-oligomer product, which has found a variety of applications in many areas, including functional food and cancer therapy. Although several structures for chitosanase have been determined
Lili Zhang et al.
Journal of chromatography. A, 1365, 86-93 (2014-09-30)
Fourteen chitosan 3,6-diphenylcarbamate-2-urea derivatives were synthesized using well-deacetylated chitosan and the corresponding phenyl isocyanates. After coating them on silica gel, their chiral recognition abilities were evaluated as the chiral stationary phases (CSPs) for high-performance liquid chromatography. These coated-type CSPs exhibited
R Shelma et al.
Journal of biomedical nanotechnology, 9(2), 167-176 (2013-05-01)
The overall goal of this paper was to enhance the bioavailability of orally delivered insulin. A mucoadhesive amphiphilic chitosan derivative, lauroyl sulphated chitosan (LSCS) was used as the oral carrier for insulin. Trans epithelial electrical resistance experiment was performed on
Lee A Hadwiger
Plant science : an international journal of experimental plant biology, 208, 42-49 (2013-05-21)
Chitosan, a naturally occurring polymer, became available in the 1980s in industrial quantities enabling it to be tested as an agricultural chemical. A usual procedure for developing agricultural chemicals starts by testing a number of different chemically synthesized molecules on
Soo Jin Jeon et al.
PloS one, 9(3), e92723-e92723 (2014-03-25)
The emergence of antibiotic resistant microorganisms is a great public health concern and has triggered an urgent need to develop alternative antibiotics. Chitosan microparticles (CM), derived from chitosan, have been shown to reduce E. coli O157:H7 shedding in a cattle
Mar Collado-González et al.
Marine drugs, 18(1) (2020-01-19)
Polyelectrolyte nanocomposites rarely reach a stable state and aggregation often occurs. Here, we report the synthesis of nanocomposites for the oral delivery of insulin composed of alginate, dextran sulfate, poly-(ethylene glycol) 4000, poloxamer 188, chitosan, and bovine serum albumin. The
Shouan Zhu et al.
Annals of the rheumatic diseases, 74(1), 285-293 (2013-11-22)
Osteoarthritis (OA) is a degenerative joint disease characterised by cartilage degradation and chondrocyte hypertrophy. A recent study showed that Rac1 promoted expression of MMP13 and chondrocyte hypertrophy within the growth plate. These findings warrant further investigations on the roles of
Shuping Wu et al.
Food chemistry, 148, 196-203 (2013-11-23)
The structure, UV absorbance, browning intensity, fluorescence changes, antioxidant activity and antimicrobial assessment of Maillard reaction products (MRPs) derived from xylan with chitosan, chitooligomer, glucosamine hydrochloride and taurine model systems were evaluated. The results revealed that all MRPs had similar
K T Shalumon et al.
Journal of biomedical nanotechnology, 9(3), 430-440 (2013-04-30)
A biomimetic scaffold which can very closely mimic the extracellular matrix of the bone was fabricated by incorporating nano-bioceramic particles such as nano bioglass (nBG) and nano hydroxyapatite (nHAp) within electrospun nanofibrous scaffold. A comparative study between nHAp incorporated poly(caprolactone)
Yvonne J Rosenberg et al.
Scientific reports, 5, 13247-13247 (2015-08-14)
Although recent innovations in transient plant systems have enabled gram quantities of proteins in 1-2 weeks, very few have been translated into applications due to technical challenges and high downstream processing costs. Here we report high-level production, using a Nicotiana
K R Krishnapriya et al.
Analytical sciences : the international journal of the Japan Society for Analytical Chemistry, 24(8), 1045-1048 (2008-08-12)
A novel chitosan derivative has been synthesized by the condensation of a binucleating ligand, 2,6-bis[(N-methylpiperazine-1-yl)methyl]-4-formylphenol (BNL), with chitosan (CTS). The resulting material (CTS-BNL) was characterized and its adsorption properties towards copper(II) ions in aqueous solutions of various pH have been
Hongyu Yang et al.
Water science and technology : a journal of the International Association on Water Pollution Research, 68(1), 209-216 (2013-07-05)
Ethylenediaminetetraacetic dianhydride (EDTAD)-modified magnetic-Fe3O4 chitosan (EMC), prepared using the cross-link agent glutaraldehyde and chemicals Fe3O4, chitosan, and EDTAD, was used to compare the adsorption of methylene blue (MB) with magnetic chitosan (MC). The composite structure was confirmed by multiple characterization
Osama A A Ahmed et al.
Expert opinion on drug delivery, 11(7), 1005-1013 (2014-04-08)
To optimize and use of glimepiride (GMD)-loaded self-nanoemulsifying delivery systems (SNEDs) for the preparation of transdermal patches. Mixture design was utilized to optimize GMD-loaded SNEDs in acidic and aqueous pH media. Optimized GMD-loaded SNEDs were used in the preparation of
Pranee Lertsutthiwong et al.
Journal of environmental sciences (China), 25(2), 262-267 (2013-04-20)
The effects of chitosan characteristics including the degree of deacetylation, molecular weight, particle size, pH pretreatment and immobilization time on the immobilization of nitrite-oxidizing bacteria (NOB) on biopolymeric chitosan were investigated. Nitrite removal efficiency of immobilized NOB depended on the
S Dheeranupattana et al.
Pakistan journal of biological sciences : PJBS, 16(18), 950-954 (2014-02-08)
The study purposed to investigate the protein expression of Stemona alkaloids biosynthesis response to chitosan elicitor by 2D gel electrophoresis. The total proteins extraction of Stemona roots were performed for comparison with the control and chitosan treatments. It was found
Rong Huang et al.
Journal of biomedical nanotechnology, 10(7), 1346-1358 (2014-05-09)
Catalase, a kind of redox enzyme and generally recognized as an efficient agent for protecting cells against hydrogen peroxide (H2O2)-induced cytotoxicity. The immobilization of catalase was accomplished by depositing the positively charged chitosan and the negatively charged catalase on electrospun
Tomas Lafarga et al.
Journal of agricultural and food chemistry, 61(37), 8790-8796 (2013-08-22)
Chitosan is nature's second most abundant polymer after cellulose and forms the structural support in crustacean shell material and Basidomycete mushroom stalks. Chitosan is a known antimicrobial agent but, to date, was not examined as an antimicrobial agent in bread
A L Kavitha et al.
Journal of nanoscience and nanotechnology, 13(1), 98-104 (2013-05-08)
This work was aimed to develop reusable magnetite chitosan composite containing carbon paste electrode for biosensor application. Glucose oxidase (GOx) enzyme was used to prepare GOx-magnetite-chitosan nanocomposite containing carbon paste electrode for sensitive detection of glucose. The immobilized enzyme retained
Bo Xiao et al.
Gastroenterology, 146(5), 1289-1300 (2014-02-08)
Nanoparticles have been explored as carriers of small interfering RNAs (siRNAs) and might be developed to treat patients with inflammatory bowel disease (IBD). Overexpression of CD98 on the surface of colonic epithelial cells and macrophages promotes the development and progression
J Pradeep Kumar et al.
Journal of biomedical nanotechnology, 10(6), 970-981 (2014-04-23)
The scaffolds for bone tissue engineering should be porous to harbor the growth of new tissue ingrowths, biodegradable with no toxic end products, and biocompatible with no cytotoxicity. In this study we report that Diopside (CaMgSi2O6) (Dp) particles can be
Changyun Qian et al.
Carbohydrate polymers, 97(2), 676-683 (2013-08-06)
In this study, N-phosphonium chitosans (NPCSs) with two degrees of substitution were synthesized in a homogeneous system as nonviral gene vectors. Grafted polymer/DNA complexes at various charge ratios were formulated and characterized. Particle sizes of NPCS/DNA complexes were between 110
Pallab Datta et al.
Journal of biomedical nanotechnology, 9(5), 870-879 (2013-06-28)
Most polymeric nanofibers used for bone tissue engineering lack adequate functional groups for bioactivity. This study explores the potential of nanofibers of phosphate functionalized derivative of chitosan-N-methylene phosphonic chitosan (NMPC) for bone tissue engineering. Nanofibers were fabricated by electrospinning of
Sara Gnavi et al.
International review of neurobiology, 109, 1-62 (2013-10-08)
Various biomaterials have been proposed to build up scaffolds for promoting neural repair. Among them, chitosan, a derivative of chitin, has been raising more and more interest among basic and clinical scientists. A number of studies with neuronal and glial
Ming-Yang Yeh et al.
Molecular medicine reports, 12(1), 133-140 (2015-03-12)
Chitosan and Agaricus blazei Murill (ABM) extracts possess antitumor activities. The aim of the present study was to investigate whether chitosan, ABM extract or the two in combination were effective against tumors in tumor‑bearing mice. The mice were subcutaneously injected
Abdelkrim El Kadib et al.
Journal of nanoscience and nanotechnology, 14(1), 308-331 (2014-04-16)
Polysaccharides are a new class of pervasive biopolymers that display many advantages including wide availability, sustainability, inherent inclusion of chemical functionality, biocompatibility and biodegradability. Current efforts are focused on the catalytic transformation of these macromolecules into fuels and platform chemicals.
Pilar de la Puente et al.
Journal of pharmaceutical sciences, 107(3), 922-933 (2017-11-23)
Overall survival of patients with newly diagnosed glioblastoma (GBM) remains dismal at 16 months with state-of-the-art treatment that includes surgical resection, radiation, and chemotherapy. GBM tumors are highly heterogeneous, and mechanisms for overcoming tumor resistance have not yet fully been
A Shakila Banu et al.
IET nanobiotechnology, 7(1), 22-27 (2013-05-28)
Nanoenabled drug carriers are emerging as alternatives to conventional small-molecule drugs and their in-vitro biocompatibility evaluation with blood components is a necessary part of early preclinical development. In the present study, Chitosan-based bionanocomposites of sol-gel derived TiO2 and SiO2 were
Ajay Vijayakumar et al.
AAPS PharmSciTech, 18(3), 875-883 (2016-07-03)
The objective of this study was to formulate and characterize properties of solid lipid nanoparticle (SLN) dispersion containing quercetin. SLN was prepared by ultrasonication method using tripalmitin and lecithin as lipid core and then the surface was coated with chitosan.
Page 1 of 7