Vapor-phase HF solvolysis of cellulose: Modification of the reversion oligosaccharide distribution by in-situ methanolysis

Rorrer, Gregory L.; Hawley, Martin C.

doi:10.1016/0144-8617(93)90160-6

Cited by 6 publications

(1 citation statement)

References 7 publications

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“…The hydrolysis of cellulose to glucose is the starting point of all conversion processes; and development of techniques to enhance the efficiency of this process is highly significant. The techniques for the hydrolysis of cellulose to reduce sugars are mainly classified into enzymatic and acidic hydrolysis (Rorrer and Hawley, 1993;Pengfei et al, 2011). However, they have been gradually replaced by solid acid catalyst (SAC)-mediated hydrolysis owing to higher efficiency, lower cost, and greater simplicity.…”

Section: Introductionmentioning

confidence: 99%

Preparation of aldehyde-graphene quantum dots from glucose for controlled release of anticancer drug

et al. 2023

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In this study, we prepared graphene quantum dots (GQDs) via a green process using rice straw as a carbon source. The non-toxic nature of GQDs is suitable for application in human body-related research. Furthermore, GQDs possess biodegradability and biocompatibility characteristics, indicating high suitability for applications in the field of drug delivery. Based on the fact that acid-sensitive bonds between GQDs and the drug doxorubicin are formed by aldehyde groups on GQD surfaces, we adopted a semi-modified TEMPO method to partially oxidize the surface functional groups of GQDs without destroying the structure. This enabled an increase in the surface aldehyde group content, which in turn enhanced the drug loading capacity of GQDs. The aldehyde group content of the GQDs was measured via Fourier transform infrared (FTIR) spectroscopy, titration based on the Cannizzaro reaction, and X-ray photoelectron spectroscopy (XPS). The drug loading effect of the GQDs was determined via absorbance measurements at 485 nm on a UV-Vis spectrophotometer. The results indicated that the semi-modified TEMPO method significantly affected the introduction of surface aldehyde groups and the enhancement of the drug loading efficiency in GQDs. Finally, the polymeric material cationic poly (vinylcyclohexene carbonates) (CPVCHCs) was used for the encapsulation of GQDs and regulation of drug release. Under the premise that the total amount of drugs released remains unaffected, the initial burst release of the drug is effectively delayed, which aids in reducing harmful effects of the drug on the human body.

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Section: Introductionmentioning

confidence: 99%

Preparation of aldehyde-graphene quantum dots from glucose for controlled release of anticancer drug

et al. 2023

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Compositional analysis of polysaccharides via solvolysis with liquid hydrogen fluoride

Yadav

BeMiller

Embuscado

1994

Carbohydrate Polymers

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Antibacterial Properties of Ag–Cu Alloy Nanoparticles Against Multidrug-Resistant Pseudomonas aeruginosa Through Inhibition of Quorum Sensing Pathway and Virulence-Related Genes

Pourjafari

Ghane

Kaboosi

et al. 2022

j biomed nanotechnol

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Objective: To evaluate the application of Ag–Cu NPs as quorum sensing (QS) inhibitors and attenuate virulence expression to overcome the global crisis of multidrug-resistant (MDR) P. aeruginosa. Methods: Ag–Cu NPs were synthesized by co-reduction of silver-nitrate and copper-nitrate (Ag:Cu = 1:1 0.75 μM). In this cross-sectional study, a total of eighty clinical strains of P. aeruginosa were collected from patients with burns. The antibacterial and resistance pattern of the clinical isolated was determined using the microdilution and Kirby Bauer disk methods. The effect of sub-MIC of Ag–Cu NPs on the expression of lasI, exoS and toxA in five clinical isolates of imipenem-resistant P. aeruginosa was performed using qRT-PCR. Results: The characterization methods confirm the formation of the Ag–Cu alloy NPs with agglomerated spherical morphology and particle sizes of about 30–40 nm. We observed that the MIC and MBC of Ag–Cu alloy NPs against MDR P. aeruginosa was found to be 2.5 and 5 μg ml−1, respectively. The effects of a sub-inhibitory concentration of Ag–Cu NPs on MDR P. aeruginosa QS and virulence-related genes showed that the expression level of QS regulatory and virulence genes significantly decreased in both MDR P. aeruginosa and reference strain under Ag–Cu sub-MIC treatment. Conclusion: Ag–Cu NPs could be potentially used as a promising QS inhibitor and anti-virulence compound against P. aeruginosa.

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Vapor-phase HF solvolysis of cellulose: Modification of the reversion oligosaccharide distribution by in-situ methanolysis

Cited by 6 publications

References 7 publications

Preparation of aldehyde-graphene quantum dots from glucose for controlled release of anticancer drug

Preparation of aldehyde-graphene quantum dots from glucose for controlled release of anticancer drug

Compositional analysis of polysaccharides via solvolysis with liquid hydrogen fluoride

Antibacterial Properties of Ag–Cu Alloy Nanoparticles Against Multidrug-Resistant Pseudomonas aeruginosa Through Inhibition of Quorum Sensing Pathway and Virulence-Related Genes

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