Hyaluronic acid /carboxymethyl chitosan embedded gold nanoparticles modulate high fructose diet induced diabetes changes in rats

Diab, Samah; Sharaby, carmen; Hamad, Hanaa Kamil; Roushdy, Mohamed M.; Fouda, Moustafa M. G.

doi:10.21608/ejchem.2022.112814.5135

Cited by 1 publication

(4 citation statements)

References 18 publications

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“…In each case, a 5.5 ml mixture of HAuCl 4 and DMSO was used. Publications [27] [29] and [31] originate from the same institutions with related ambiguous reporting of the microwave parameters used. For example, El-Nagger et al ( 2016) [27] used a Galanz microwave oven, (model number unclear) to reduce a 25 ml mixture of HAuCl 4 and bacterial exopolysaccharide (curdlan) with power irradiation time 2 to 10 minutes for an unspecified power level to achieve their Au core shell product.…”

Section: Domestic Microwave Ovenmentioning

confidence: 99%

“…Some four years later, Hussein et al ( 2002) [29] used an unspecified microwave oven to reduce a 12 ml mixture of HAuCl 4 and dextran with an unreported microwave power level for an irradiation time of 40 s to achieve the target AuNP product. Finally, Diab et al ( 2022) [31] while referencing [27] used an unspecified microwave oven to reduce a 12 ml mixture of HAuCl 4 and carboxymethyl chitosan (CMCT) and for an unspecified microwave power level for an irradiation time of 40 s to achieve the target AuNP product.…”

Section: Domestic Microwave Ovenmentioning

confidence: 99%

“…Therefore a number of microwave-assisted applicators types have been investigated, that comes in the form of mono-mode cavity [14], and turntable loaded multimode applicators [15]- [21], unmodified domestic microwave ovens [22]- [35], temperature controlled microwave chemistry (TCMC) ovens [36]- [40], and axial field helical antenna [41]. The unmodified domestic microwave oven has attracted much interest due to its low cost of ownership and widespread availability for microwave-assisted synthesis of Au nanoparticles [22]- [31], Ag nanoparticles [27] [32]- [40], and Ag substituted hydroxyapatite (AgHA) nanoparticle: the latter being used as bone filler and coatings on metal prosthesis [33].…”

Section: Introductionmentioning

confidence: 99%

“…Given this focus on the chemistry and bio-chemistry aspects of the microwave synthesis, little information has been conveyed regarding the impact of the microwave applicators and their power source on the synthesis. Indeed in some of the publications, the microwave applicator model has been incorrectly identified [33], unspecified [23] [25] [27] and [31], or the text relating to the duty cycle is ambiguous [24] [34]. To scale-up, or, scale-out, such microwave-assisted synthesis from milligram quantities, a working knowledge of the microwave applicator impact needs be to understand, and the knowledge gained integrated into the already accepted synthesis variables: bulk temperature, concentration, pH, solvent medium, and process time.…”

Section: Introductionmentioning

confidence: 99%

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Microwave-Assisted Au and Ag Nanoparticle Synthesis: An Energy Phase-Space Projection Analysis

Law¹,

Dowling²

2023

AJAC

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Microwave-assisted synthesis of gold and silver nanoparticles, as a function of Green Chemistry, non Green Chemistry, and four applicator types are reported. The applicator types are Domestic microwave ovens, commercial temperature controlled microwave chemistry ovens (TCMC), digesters, and axial field helical antennae. For each of these microwave applicators the process energy budget where estimated (Watts multiplied by process time = kJ) and energy density (applied energy divided by suspension volume = kJ⋅ml −1 ) range between 180 ± 176.8 kJ, and 79.5 ± 79 kJ⋅ml −1 , respectively. The axial field helical field antenna applicator is found to be the most energy efficient (0.253 kJ⋅m −1 per kJ, at 36 W). Followed by microwave ovens (4.47 ± 3.9 kJ⋅ml −1 per 76.83 ± 39 kJ), and TCMC ovens (2.86 ± 2.3 kJ⋅m −1 per 343 ± 321.5 kJ). The digester applicators have the least energy efficiency (36.2 ± 50.7 kJ⋅m −1 per 1010 ± 620 kJ). A comparison with reconstructed 'non-thermal' microwave oven inactivation microorganism experiments yields a power-law signature of n = 0.846 (R 2 = 0.7923) four orders of magnitude. The paper provides a discussion on the Au and Ag nanoparticle chemistry and bio-chemistry synthesis aspects of the microwave applicator energy datasets and variation within each dataset. The visual and analytical approach within the energy phase-space projection enables a nanoparticle synthesis route to be systematically characterized, and where changes to the synthesis are to be mapped and compared directly with historical datasets. In order to help identify lower cost nanoparticle synthesis, in addition to potentially reduce synthesis energy to routes informed changes to potentially reduce synthesis energy budget, along with nanoparticle morphology and yield.

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Section: Domestic Microwave Ovenmentioning

confidence: 99%