Interaction of sulfomethylated lignin and aluminum oxide

Kazzaz, Armin Eraghi; Feizi, Zahra Hosseinpour; Fatehi, Pedram

doi:10.1007/s00396-018-4408-6

Cited by 13 publications

(7 citation statements)

References 51 publications

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“…Then, samples were sonicated for 3 min and 100 μL of them was added to a previously filtered KCl (1 mM) and analyzed. 33 2.5. Zeta Potential Analysis.…”

Section: Methodsmentioning

confidence: 99%

“…In this analysis, CNC suspensions were used at 5 g/L concentration and neutral pH and stirred overnight. Then, samples were sonicated for 3 min and 100 μL of them was added to a previously filtered KCl (1 mM) and analyzed …”

Section: Experimental Sectionmentioning

confidence: 99%

“…The average pore size and pore volume of the samples were also determined. Sample degasification under vacuum was conducted at 373 K for 12 h before performing the measurement . To prepare the antibiotic-loaded CNC samples, CNC suspensions (5 g/L) and antibiotics (100 mg/L) were generated at neutral pH.…”

Section: Experimental Sectionmentioning

confidence: 99%

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Interaction of Carboxyalkylated Cellulose Nanocrystals and Antibiotics

Feizi

Fatehi

2021

ACS Appl. Bio Mater.

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Although antibiotics are beneficial for treating infections, their release into the environment has raised global concerns. In this work, the interactions of cellulose nanocrystal (CNC) derivatives with sulfamethoxazole (SMX), ciprofloxacin (CIP), and doxycycline (DOX) antibiotics were studied fundamentally. CNC was carboxyalkylated to bear different carbon chain lengths but similar negative charges on its surface. The highest level of adsorption of DOX on the carboxypantadecanated CNC (i.e., carboxyalkylated CNC with more carbon spacer, PCNC) occurred at pH 6.0, which was due to the electrostatic and π interactions along with hydrogen bonding. The contact angle and quartz crystal microbalance (QCM) adsorption analyses revealed a faster interaction and adsorption of DOX than other antibiotics on PCNC. The results also depicted the diffusion of DOX into the porous structure of CNC derivatives, especially that of PCNC. Also, a more compact adsorbed layer of DOX was formed on PCNC than on other CNC derivatives. Carboxyalkylation was observed to slightly reduce the surface area of CNC, while the antibiotic adsorption drastically increased the surface area of CNC due to their adsorption on the surface. XPS analysis revealed that carboxyalkylation significantly enhanced the

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“…Then, samples were sonicated for 3 min and 100 μL of them was added to a previously filtered KCl (1 mM) and analyzed. 33 2.5. Zeta Potential Analysis.…”

Section: Methodsmentioning

confidence: 99%

Section: Experimental Sectionmentioning

confidence: 99%

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Interaction of Carboxyalkylated Cellulose Nanocrystals and Antibiotics

Feizi

Fatehi

2021

ACS Appl. Bio Mater.

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“…The charge density of samples was determined with a Particle Charge Detector (PCD 04, BTG Mütek GmbH) using a 0.005 mol L À1 PDADMAC or 0.005 mol L À1 PVSK solution as the titrant, as explained elsewhere. 14,36 The elemental analysis of the polymers was performed using an elemental analyzer (Vario EL Cube, Elemental Analyzer, Germany) as explained in detail elsewhere. 37 The molecular weight of PVA-S and L-S polymers was measured by a gel permeation chromatography (GPC, Malvern GPCmax VE2001 with multi-detectors) aer treating the samples at different pH values (4.0, 6.7, and 11.0) for 12 h and purifying the samples using membrane dialysis for 3 days.…”

Section: Characterizationmentioning

confidence: 99%

“…6,8 Lignin, an abundant phenolic polymer, is one of the alternatives to petroleum feedstocks, 9 which recently attracted tremendous attention and applications. [10][11][12][13][14][15] Lignin, by having a complex three-dimensional structure, has been reported to show a distinct interaction behavior compared to linear polymeric materials. 16,17 However, as lignin has a complicated structure, the interaction mechanisms of lignin derivatives with different functionalized surfaces are still unclear.…”

Section: Introductionmentioning

confidence: 99%

Interaction of synthetic and lignin-based sulfonated polymers with hydrophilic, hydrophobic, and charged self-assembled monolayers

Kazzaz

Fatehi

2020

RSC Adv.

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Production, properties and applications of proteases from pongamia oil seed cakes

Seshagiri¹,

Parthiban²,

Reddy³

2023

J of Applied Polymer Sci

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De-oiled cakes (meal) containing proteins and carbohydrates are inevitably produced during extraction of oil from seeds. These cakes are inexpensive, sustainable and renewable sources but have limited applications. In this present study, de-oiled pongamia seed cake was used as substrate to produce protease by Bacillus licheniformis, Acinetobacter pittii, and Aspergillus niger under different culture conditions such as pH and temperature. Furthermore, the influence of diverse carbon and nitrogen sources on enzyme production was studied. Under the optimized conditions but without any additional inducers, the activity of protease produced by Aspergillus niger was 27.5 UmL À1 , which is 34% higher than the activity obtained using B. licheniformis and about 6.7 times higher compared to that obtained using A. pittii. Addition of nitrogen or carbon source leads to an increase in enzyme activity of up to 240% with urea by Aspergillus niger and 163% with fructose by Acinetobacter pittii. Proteases obtained had optimum production at pH 8 and temperature of 30 and 40 C.The enzyme produced was effective in hydrolysing the gelatin layer from used x-ray films, enabling the film to be recycled and was also able to coagulate milk, suggesting that it may be suitable for food applications.

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Interaction of sulfomethylated lignin and aluminum oxide

Cited by 13 publications

References 51 publications

Interaction of Carboxyalkylated Cellulose Nanocrystals and Antibiotics

Interaction of Carboxyalkylated Cellulose Nanocrystals and Antibiotics

Interaction of synthetic and lignin-based sulfonated polymers with hydrophilic, hydrophobic, and charged self-assembled monolayers

Production, properties and applications of proteases from pongamia oil seed cakes

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