Bridged-cyclodextrin supramolecular hydrogels: host–guest interaction between a cyclodextrin dimer and adamantyl substituted poly(acrylate)s

RSC Advances ◽  
2015 ◽  
Vol 5 (57) ◽  
pp. 46067-46073 ◽  
Author(s):  
Jie Wang ◽  
Yisheng Xu ◽  
Yiming Wang ◽  
Jianjia Liu ◽  
Jun Xu ◽  
...  
Keyword(s):  
Cyclodextrin Dimer ◽  
Beta Cyclodextrin ◽  
Competitive Complexation

Tunable biocompatible hydrogels are prepared by competitive complexation between a beta-cyclodextrin dimer and adamantyl substituted poly(acrylate)s with various tether lengths.

scholarly journals Host–Guest Inclusion Complexes of Essential Oils with Strong Antibacterial and Antifungal Features in Beta-Cyclodextrin for Solid-State Pharmaceutical Applications

2021 ◽  
Vol 11 (14) ◽  
pp. 6597
Author(s):  
Aldo Arrais ◽  
Marta Manzoni ◽  
Alessia Cattaneo ◽  
Valentina Gianotti ◽  
Nadia Massa ◽  
...  
Keyword(s):  
Solid State ◽  
Essential Oil ◽  
Essential Oils ◽  
Inclusion Complexes ◽  
Production Costs ◽  
Good Tolerance ◽  
Actual Application ◽  
Beta Cyclodextrin ◽  
Ft Ir ◽  
Antibacterial And Antifungal

Essential oils are widely recognized as natural alternatives to pharmaceutical antibacterial and antifungal agents. With respect to standard pharmaceutics, the advantages of essential oils are their (i) low production costs, (ii) lack of chemical and biochemical drawbacks that are intrinsic to the synthetic production process and (iii) good tolerance by humans. On the other hand, the liquid nature of essential oils poses concerns about their actual application in different therapeutic issues regarding their persistence and the ability to control or prolong drug release. In this study, two essential oils from oregano and winter savory showing antibacterial and antifungal features were complexed in a solid state with beta-cyclodextrin. Host–guest inclusion complexes were characterized using FT-IR spectroscopy, ESI-MS and GC-MS techniques. Manyfold terpenic and non-terpenic components of the oils could be observed and unambiguously identified as being included inside the carbohydrate hosts. Many of them provided a specific biocidal action. Indeed, essential oil host–guest inclusion products were tested against two Candida species and an S. aureus reference strain, showing that the oils effectively maintained their liquid performances. Solid-state tablets of the essential oil inclusion complexes embedded in polyvinylpyrrolidone could be obtained. These results pave the way for the solid-state application of essential oils in antibacterial and antifungal pharmaceutical treatments.

scholarly journals Catalytic Activity of Beta-Cyclodextrin-Gold Nanoparticles Network in Hydrogen Evolution Reaction

Catalysts ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 118
Author(s):  
Qui Quach ◽  
Erik Biehler ◽  
Ahmed Elzamzami ◽  
Clay Huff ◽  
Julia M. Long ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Catalytic Activity ◽  
Gold Catalyst ◽  
Hydrogen Gas ◽  
Hydrolysis Reaction ◽  
X Ray Diffraction ◽  
Beta Cyclodextrin ◽  
Transmission Electron ◽  
Production Of Hydrogen ◽  
Climate Crisis

The current climate crisis warrants investigation into alternative fuel sources. The hydrolysis reaction of an aqueous hydride precursor, and the subsequent production of hydrogen gas, prove to be a viable option. A network of beta-cyclodextrin capped gold nanoparticles (BCD-AuNP) was synthesized and subsequently characterized by Powder X-Ray Diffraction (P-XRD), Fourier Transform Infrared (FTIR), Transmission Electron Microscopy (TEM), and Ultraviolet-Visible Spectroscopy (UV-VIS) to confirm the presence of gold nanoparticles as well as their size of approximately 8 nm. The catalytic activity of the nanoparticles was tested in the hydrolysis reaction of sodium borohydride. The gold catalyst performed best at 303 K producing 1.377 mL min−1 mLcat−1 of hydrogen. The activation energy of the catalyst was calculated to be 54.7 kJ/mol. The catalyst resisted degradation in reusability trials, continuing to produce hydrogen gas in up to five trials.

scholarly journals A reduced graphene oxide-β-cyclodextrin nanocomposite-based electrode for electrochemical detection of curcumin

RSC Advances ◽  
2021 ◽  
Vol 11 (14) ◽  
pp. 7862-7872
Author(s):  
Behzad Mirzaei ◽  
Ali Zarrabi ◽  
Abdollah Noorbakhsh ◽  
Abbas Amini ◽  
Pooyan Makvandi
Keyword(s):  
Graphene Oxide ◽  
Electrochemical Sensor ◽  
Reduced Graphene Oxide ◽  
Electrochemical Detection ◽  
Beta Cyclodextrin ◽  
Reduced Graphene

In this study, a sensitive electrochemical sensor was fabricated based on a beta-cyclodextrin–reduced graphene oxide (β-CD–rGO) nanocomposite for measuring curcumin concentration.

Chiral Recognition and Separation of Amino Acids by Means of a Copper(II) Complex of Histamine Monofunctionalized .beta.-Cyclodextrin

1994 ◽  
Vol 116 (22) ◽  
pp. 10267-10274 ◽  
Author(s):  
Roberto Corradini ◽  
Arnaldo Dossena ◽  
Giuseppe Impellizzeri ◽  
Giuseppe Maccarrone ◽  
Rosangela Marchelli ◽  
...  
Keyword(s):  
Amino Acids ◽  
Chiral Recognition ◽  
Beta Cyclodextrin
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