encapsulation stabilization and controlled release of food ingredients and bioactives
báo cáo khoa học: "Enzymatic- and temperature-sensitive controlled release of ultrasmall superparamagnetic iron oxides (USPIOs)" pdf
Ngày tải lên :
11/08/2014, 00:23
... modulation of image contrast Results and Discussion Synthesis of PEG-PPS block copolymers and encapsulation of USPIO cores The anionic ring opening polymerization scheme allows some degree of flexibility ... formation of the clusters The rate of de-clustering is expected to be controlled by the relative concentrations of the enzyme and substrate The 4-hour enzyme treatment in this proof -of- concept ... to exert controlled release of the USPIO cores Light scattering and relaxation measurements were carried out on clustered and declustered MRS in aqueous solution The work presented here offers...
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Báo cáo khoa hoc:" Correction: Enzymatic- and temperature-sensitive controlled release of ultrasmall superparamagnetic iron oxides (USPIOs)" potx
Ngày tải lên :
11/08/2014, 08:20
... Hubbell4 and Todd D Giorgio1,2* Affiliations: Department of Biomedical Engineering, Vanderbilt University; Nashville, Tennessee, USA Vanderbilt Institute for Nanoscale Science and Engineering, Vanderbilt ... Correction: Enzymatic- and temperature-sensitive controlled release of ultrasmall superparamagnetic iron oxides (USPIOs) Shann S Yu1,2, Randy L Scherer2,3, Ryan A Ortega1,2, Charleson ... Hubbell, J A., Giorgio, T D (2011) Enzymatic- and temperature-sensitive controlled release of ultrasmall superparamagnetic iron oxides (USPIOs) Journal of Nanobiotechnology 9, ...
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Controlled release of anticancer drugs, proteins and liposomes by polymeric microspheres
Ngày tải lên :
17/09/2015, 17:20
... efficiency of liposomes in LIMs 41 In vitro release 41 2.18.1 In vitro release of paclitaxel from microspheres 41 2.18.2 In vitro release of HSA from microspheres 42 2.18.3 In vitro release of liposomes ... Calibration curve of UV-Vis spectrophotometer analysis of HSA Figure 4.11 Effect of polymers on encapsulation efficiency of HSA in microspheres Figure 4.12 Effect of polymers on in vitro release of HSA ... images of (A) freeze-dried liposomes, and the interior of (B) blank microspheres and (C) LIMs Figure 5.12 Surface morphology of blank microspheres and LIMs Figure 5.13 In vitro release of liposomes...
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ENCAPSULATION OF PLATINUM BASED DERIVATIVES WITHIN CARBON NANOTUBES INVESTIGATIONS ON CONTROLLED RELEASE AND IN VIVO BIODISTRIBUTION
Ngày tải lên :
08/09/2015, 18:10
... spectra of spherical AuNP and f-AuNP-1 127 Figure 5.3 TEM images of (a) pristine MWCNTs and (b) MWCNTox 129 Figure 5.4 TEM images of (a) f-MWCNT-CDDP-2 composed of MWCNT, AuNP, and ester ... linkage; and (b) f-MWCNT-CDDP-3 composed of MWCNT, AuNP, and disulfide linkage 130 Figure 5.5 Release of [Pt] from covalently capped nano-bottles of f-MWCNT-CDDP1, f-MWCNT-CDDP-2, and ... [155] The release of C60 from CNTs was confirmed in dichlorobenzene and toluene, and the release efficiency reached its maximum at diameters of 3~5 nm [154, 155] Cisplatin (CDDP) is one of the first...
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Dictionary of food compounds additives, flavors, and ingredients yannai s 2004
Ngày tải lên :
16/09/2013, 21:58
... shortcomings in terms of indexing and expense of updating With the increasing and sometimes contradictory demands of the consumer market today, the need for the best up-to-date and accurate information ... regulatory aspects of food supply and monitoring The book and CD-ROM versions are complementary The important thing for the user to be assured of is that the Dictionary of Food Compounds is an ... indication of crystal form and of recrystallisation solvent is often given but these are imprecise items of data; most compounds can be crystallised from several solvent systems and the crystal form often...
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báo cáo hóa học:" Hind-foot correction and stabilization by pins in plaster after surgical release of talipes equino varus feet in older children" pot
Ngày tải lên :
20/06/2014, 04:20
... deformity of the calcaneus, and enabled a better hand grip and control of the hind foot during casting after surgery c The third pin (subtalar wire); After complete subtalar release, and correction of ... management of CTEV [15-19], and also reports of trials of application of the Ponseti technique in severe arthrogrypotic club feet [20], there are still reports of early recurrence of the deformity, and ... as: El-Sayed and Seleem, Hind-foot correction and stabilization by pins in plaster after surgical release of talipes equino varus feet in older children Journal of Orthopaedic Surgery and Research...
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Báo cáo lâm nghiệp: "Growth and nutrition of container-grown ponderosa pine seedlings with controlled-release fertilizer incorporated in the root plug" docx
Ngày tải lên :
08/08/2014, 01:22
... model (1) We estimated the initial value of parameters A, k and m as 3.9, 0.5 and 0.3, and 17, 0.9 and 0.7, and 3.0, 0.7 and 0.5 for D, H and V, respectively, and used the Gauss-Newton iterative method ... incorporating controlled- release fertilizer in the root plug, the release characteristics and application rate of controlled- release products must be well matched to the size of the containerized stock and ... root plugs and pointed out that release rate and application rate were the key factors determining controlled- release fertilizer performance Application of controlled- release fertilizers is a promising...
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báo cáo khoa học: "Formulation of polylactide-co-glycolic acid nanospheres for encapsulation and sustained release of poly(ethylene imine)-poly(ethylene glycol) copolymers complexed to oligonucleotides" pptx
Ngày tải lên :
11/08/2014, 00:22
... Comparisonof mdx numberthe dystrophin-positivekDa) nanoFigure encapsulated with of PEG-PEI-AO polyplex spheres injections of of the mice polyplex and PLGA (17 fibers in Comparison of the number of dystrophin-positive ... approved and utilized in a wide variety of drug delivery applications including the encapsulation of nucleic acids [28-30] The properties of PLGA nanospheres can be controlled by utilizing a range of ... Figure of sonication intensity and vessel volume on the mean size and size distribution of unloaded 72 kDa lauryl ester endcapped PLGA nanospheres Influence Influence of sonication intensity and...
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Applications of electrospinning and supercritical carbon dioxide foaming techniques in controlled release and bone regeneration 1
Ngày tải lên :
14/09/2015, 08:41
... the undesirable release profile of drugs For nanoparticle and microparticle, a burst release at an early stage together with a very short release course is the major weakness Xie and Wang reported ... adhesion and growth Moreover, the devices made of PLGA are soft and their mechanical properties are not sufficient for tissue support and remolding 27 Chapter CHAPTER OBJECTIVES AND ORGANIZATION OF ... group of growth factors and cytokines known for their ability to induce the formation of bone and cartilage (Chen et al., 2004) Originally, seven such proteins were discovered Of these, six of them...
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Applications of electrospinning and supercritical carbon dioxide foaming techniques in controlled release and bone regeneration 2
Ngày tải lên :
14/09/2015, 08:41
... 3.3.3 In vitro release studies The in vitro release of BMP-2 was carried out over a period of 60 days and the cumulative release curve can be plotted Approximately 25mg of microfiber samples ... phase of extraction; Vwater is the volume of water phase of extraction; Wsample is the weight of each scaffold sample used for EE analysis; WBMP-2, WPLGA and WHAp are the weights of BMP-2, PLGA and ... percentage of BMP-2 released when more HAp nanoparticles were added The percentage of BMP-2 released in F1 was slightly less than 25% after more than 360 hours (15 days) of in vitro release study, and...
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Applications of electrospinning and supercritical carbon dioxide foaming techniques in controlled release and bone regeneration 3
Ngày tải lên :
14/09/2015, 08:41
... problem is the existence of a large burst over a narrow time period during the early stage of release Fibre has much lower release rate of drug or protein than microsphere because of its smaller surface/volume ... that different loading methods of BMP-2 and different HAp contents in scaffolds can alternate the release profiles of BMP-2 in vivo, therefore modify the performance of scaffolds in bone regeneration ... from the sonication of organic and aqueous mixture The compositons of kinds of scaffold samples and their fabrication can be found in Section 3.2.2 (page 35) 4.3 Characterization of scaffolds 4.3.1...
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Applications of electrospinning and supercritical carbon dioxide foaming techniques in controlled release and bone regeneration 4
Ngày tải lên :
14/09/2015, 08:41
... sonication of organic and aqueous mixture Table 5.1 summarizes the composition of the emulsion of the groups (A, B and C) and samples (A1-A3, B1-B3 and C1-C3) of scaffolds Preparation of organic ... vitro release test, about 60% (40, 60 and 85% for A1, A2 and A3 respectively), 30% (18, 31 and 50% for B1, B2 and B3 respectively) and 16% (8, 16 and 24% for C1, C2 and C3 respectively) of the ... nanoparticles and microparticles On the other hand, the release curves for group B are quite different: There are no obvious bursts of release and their release rates in the initial stage (cumulative release...
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Applications of electrospinning and supercritical carbon dioxide foaming techniques in controlled release and bone regeneration 5
Ngày tải lên :
14/09/2015, 08:41
... These in vivo observations of serum BMP-2 concentration demonstrate different release properties of groups A, B and C, and are consistent with the in vitro release profiles of BMP-2 plasmid from different ... the low transfection efficiency of naked DNA, and thus the low expression of naked plasmid released from A1 and A3 Consequently, the serum BMP-2 levels of A1 and A3 did not improve significantly ... significant In this study, the more important role of HAp is for the controlled release of BMP-2 plasmid As higher content of HAp enables higher release rate of naked DNA or DNA/chitosan nanoparticles...
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Applications of electrospinning and supercritical carbon dioxide foaming techniques in controlled release and bone regeneration 6
Ngày tải lên :
14/09/2015, 08:41
... till the end of release For the cases of F1, it released about 60% and 30% of DNA during the first and second burst respectively While for the case of F2, it released about 30% and 50% of DNA during ... the degradation of PLGA matrix gradually This type of release profile is typical for PLGA-based delivery devices, such as microparticles and microfibers (Xie and Wang, 2007; Nie and Wang, 2007) ... significant decrease of cell viability in day and In contrast, the high viscosity and strength of chitosan coated on the surface of F1 and F2 might hinder and slow down the degradation of -COOH groups...
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Applications of electrospinning and supercritical carbon dioxide foaming techniques in controlled release and bone regeneration 7
Ngày tải lên :
14/09/2015, 08:41
... period of two days, there were two small release bursts observed for the case of F1 and F2, each burst release was followed by a period of slow release profile Compared with the release profile of ... could entrap and retain DNA even after times of washing However, the release profiles of DNA from F1 and F2 were evidently different from that of F0 While 60% of the DNA loaded on F0 was released ... synergic effects of cytotoxicity of F0 samples and their poor sustainability of DNA release Around 70% of the DNA entrapped in F0 is released within the first days and the following release after...
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Applications of electrospinning and supercritical carbon dioxide foaming techniques in controlled release and bone regeneration 8
Ngày tải lên :
14/09/2015, 08:41
... capacity and release behavior of DNA were found to be highly dependent on the charge properties of the foam surfaces Because of the presence of ionic interaction between the carboxyl groups of DNA and ... bioactivity of BMP-2 plasmid released from all the three kinds of scaffolds was well maintained, which helped improve the formation of new bone and the healing of segmental defects in vivo Groups A, B and ... Chapter 180 disintegration of the scaffolds, and subsequently enhance the release of BMP-2 protein from scaffolds, as shown in the in vitro release profiles (Figures 3.6 and 5.5) Animal experiments...
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Release of anti-cyanobacterial allelochemicals from aquatic and terrestrial plants applicable for artificial floating islands
Ngày tải lên :
05/09/2013, 09:38
... elution using ml of methanol, 10 µL of the methanol eluent was added to 10 ml of CB medium (Watanabe and Satake, 1991) in a test tube, and after that M aeruginosa - 56 - Journal of Water and Environment ... Hishikaki, Japan) Confirmation of the release of anti-cyanobacterial allelochemicals In order to confirm the release of anti-cyanobacterial allelochemicals, the culture solution of each plant was subjected ... (Oryza satives) seedlings by water extracts of C rotundus and leachate of its leaves, and found the existence of phenolic compounds such as 4-hydroxy benzoic and 3,4-dihydroxy benzoic acids Additionally,...
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Continuous Anaerobic Digestion of Food Waste and Paper Waste under Mesophilic-Dry Condition
Ngày tải lên :
05/09/2013, 10:15
... ratio of food waste and paper waste was 7:3 on a weight basis and a certain amount of water was added to adjust the TS concentration The TS concentration of food waste and paper waste was 20% and ... (HRT) and the solid concentration of substrate were controlled - 168 - MATERIALS AND METHODS Feedstock and seeding source Food waste collected from a school cafeteria, and paper waste comprised of ... organic fraction of municipal solid wastes have been treated Recently, with increasing concern over the limited capacity of landfill, conservation of resources, and reduction of CO2 emissions,...
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A discourse anslysis of the linguistic features of the advertisements of food and drink in english versus vietnamese
Ngày tải lên :
26/11/2013, 13:27
... discourse analysis of advertisements of foods and drinks in English and Vietnamese in terms of Prosodic and graphic features; - A discourse analysis of long copy of advertisements of foods and drinks ... ADVERTISEMENTS OF FOOD AND DRINK 4.3.2.1 Rhyme 4.3.1 Utilization of Speech acts in the ads of foods and drinks Both English and Vietnamese made used of rhyme in both long copy ads and short copy ... devices of the advertisements of food and drink in English and Vietnamese at discourse level? linguistic features of the advertisements of food and drink in What are the similarities and differences...
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Tài liệu Báo cáo khoa học: Degradation of tropoelastin by matrix metalloproteinases – cleavage site specificities and release of matrikines pptx
Ngày tải lên :
16/02/2014, 14:20
... ‘none’, and the mass error tolerances for precursor and fragment ions were typically set to 0.15 u for qTOF MS ⁄ MS and 50 p.p.m and u, respectively, for MALDI-TOF ⁄ TOF MS data The formation of pyroglutamic ... P1–P4 and P1¢–P4¢ of the substrate and to give a structural explanation of the amino acid preferences of MMP-7, MMP-9, and MMP-12, which have not been described to date Moreover, the potential of ... and of 15 possible x-Tyr cleavage sites, respectively x-Phe bonds were found to be hydrolyzed by MMP-7 (2 of 16) and MMP-12 (4 of 16) but not by MMP-9 The cleavage behavior of MMP-7, MMP-9, and...
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