Urease immobilization on magnetic micro/nano-cellulose dialdehydes: Urease inhibitory of Biginelli product in Hantzsch reaction by urea

Tamaddon, Fatemeh; Arab, Davood; Ahmadi-AhmadAbadi, Ehsan

doi:10.1016/j.carbpol.2019.115471

Cited by 34 publications

(21 citation statements)

References 42 publications

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“…Nanocellulose crystals (NCCs) were from the cotton (Dima Co. Mybood-Yazd-Iran) following a previous experience [41] were converted to the NCMCC by carboxymethylation with the in situ formed sodium chloroacetate from the chloro-acetic acid and sodium carbonate. Cross-linker was synthesized based on our previous experience [42] using γ-Fe 2 O 3 -SO 3 H as catalyst, while PAAmide, FeCl 3 •6H 2 O, FeCl 2 •4H 2 O, 4chlorobenzaldehyde, APS, solvents, and all other chemicals were purchased in analytical grade from the Merck Company (Germany).…”

Section: Methodsmentioning

confidence: 99%

Cross-Linked Nano-carboxymethylcellulose, Polyacrylamide, and g-Fe2O3-SO3H to a Hydrophobic Linker: An Organic-Inorganic Hybrid Hydrogel for Dye Removal Adsorption

Tamaddon

Khoje-neamah²

2022

Preprint

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The pH-responsive magnetic hydrogel bearing hydrophobic chlorophenyl implants was prepared by cross-linking the as-prepared nanocarboxymethylcellulose crystals (NCMCC), g-Fe2O3-SO3H, and polyacrylamide (PAAmide) to the synthesized hydrophobic bis-amide N,N'-((4-chlorophenyl)methylene) diacrylamide (NNCMDA). g-Fe2O3-SO3H was either the hydrogel magnetizing agent or the solid acid catalyst for linker synthesis. Carboxymethylation of the cotton-derived nanocellulose was modified to give the NCMCC that cross-linked to the g-Fe2O3-SO3H, and PAAmide by NNCMDA to obtain the NCMCC/PAAmide/g-Fe2O3-SO3H/NNCMDA hydrogel. After characterization of the hydrogel by FT-IR, FESEM, TGA, VSM, and XRD, the results of swelling experiments showed a decrease in water absorption and swelling but retained hydrophilic surface of the hydrogel by hosting the hydrophobic cross-linker NNCMDA. Hydrogel revealed good adsorptive dye removal with selectivity to cationic ones, so its adsorption capacity for Methylene blue (MB) and Rhodamine B (RB) were 717.0 mg/g and 61.0 mg/g, respectively. Simultaneous entering of hydrophobic NNCMDA implants and pH-responsive magnetizing agent g-Fe2O3-SO3H increased the performance of the hydrogel to remove the 74.68% MB and 50.85% RB without matrix change after the fifth recycling run. All resu1ts confirmed that NCMCC/PAAmide/g-Fe2O3-SO3H/NNCMDA hydrogel is an effective adsorbent for the dye removal from wastewater.

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Section: Methodsmentioning

confidence: 99%

Cross-Linked Nano-carboxymethylcellulose, Polyacrylamide, and g-Fe2O3-SO3H to a Hydrophobic Linker: An Organic-Inorganic Hybrid Hydrogel for Dye Removal Adsorption

Tamaddon

Khoje-neamah²

2022

Preprint

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“…Due to this immobilisation reusability, stability, pH resistance and urease temperature were improved, although there is no change in enzyme activity. In addition, 100% selectivity of both the designed immobilised urease‐catalysed Hantzsch and Biginelli reaction was observed for Biginellis [ 94 ]. A surface‐enhanced Raman spectroscopy (SERS) pH sensor has been developed that functions in the buffered solution and used to track specific analyte targeted by acid‐producing enzymatic reactions.…”

Section: Classification Of Urea Biosensorsmentioning

confidence: 99%

Recent advancements in urea biosensors for biomedical applications

Singh

Sharma

Singh

2021

IET Nanobiotechnology

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The quick progress in health care technology as a recurrent measurement of biochemical factors such as blood components leads to advance development and growth in biosensor technology necessary for effectual patient concern. The review wok of authors present a concise information and brief discussion on the development made in the progress of potentiometric, field effect transistor, graphene, electrochemical, optical, polymeric, nanoparticles and nanocomposites based urea biosensors in the past two decades. The work of authors is also centred on different procedures/methods for detection of urea by using amperometric, potentiometric, conductometric and optical processes, where graphene, polymer etc. are utilised as an immobilised material for the fabrication of biosensors. Further, a comparative revision has been accomplished on various procedures of urea analysis using different materials-based biosensors, and it discloses that electrochemical and potentiometric biosensor is the most promise one among all, in terms of rapid response time, extensive shelf life and resourceful design.This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.

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“…Its application in the synthesis of DHPMs by means of the Biginelli reaction and of 1,4-DHPs by means of the Hantzsch reaction has recently been reviewed. [95] Interestingly, such an alternative energy source has been compared to MW in terms of efficiency [102,103] in promoting the synthesis of both Biginelli and Hantzsch esters containing boron which is obtained under catalyst free conditions in refluxing EtOH and depending on the selection of a nitrogen-source. [96] Infrared radiation was less efficient than microwaves in promoting condensations, but it is worth noting the effort made to find new ways for synthesizing boron esters (entry 13, Table 1), which are interesting scaffolds for material chemistry applications, in a completely safe and green manner.…”

Section: Eurjocmentioning

confidence: 99%

“…Surprisingly, it was recently demonstrated that Biginelli products can act as Urease inhibitors. This additional information was used by Tamaddon et al [103] The authors proposed urease immobilization on magnetic nanocellulose and microcellulose as tuning tools for a Biginelli/ Hantzsch reaction. They demonstrated that immobilized urease is able to catalyze the hydrolysis of urea to ammonia, comparably to free urease.…”

Section: Eurjocmentioning

confidence: 99%

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Similarity and Competition between Biginelli and Hantzsch Reactions: an Opportunity for Modern Medicinal Chemistry

2020

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Similarity and competition between multicomponent reactions with similar mechanisms and leading to similar scaffolds can be a useful tool for medicinal chemistry. In this review, we have summarized the studies disclosing the mechanism of such competition between the Biginelli and Hantzsch reactions. We focused our attention in particular on those studies exploiting similarity and competition as an opportunity to switch from one reaction to another, by simply changing the reaction conditions, thus opening the possibility to obtain, using the same experimental setup, molecular libraries of both 3,4‐dihydropyrimidin‐2‐(1H)‐ones (DHPM) and 1,4‐dihydropyridines (1,4‐DHP) scaffolds. The aim of this review is to encourage further exploitation of such synthetic strategy as a tool for enhancing the chemical space in medicinal chemistry.

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Urease immobilization on magnetic micro/nano-cellulose dialdehydes: Urease inhibitory of Biginelli product in Hantzsch reaction by urea

Cited by 34 publications

References 42 publications

Cross-Linked Nano-carboxymethylcellulose, Polyacrylamide, and g-Fe2O3-SO3H to a Hydrophobic Linker: An Organic-Inorganic Hybrid Hydrogel for Dye Removal Adsorption

Cross-Linked Nano-carboxymethylcellulose, Polyacrylamide, and g-Fe2O3-SO3H to a Hydrophobic Linker: An Organic-Inorganic Hybrid Hydrogel for Dye Removal Adsorption

Recent advancements in urea biosensors for biomedical applications

Similarity and Competition between Biginelli and Hantzsch Reactions: an Opportunity for Modern Medicinal Chemistry

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