Nanocellulose synthesis from Tamarix aphylla and preparation of hybrid nanocellulose composites membranes with investigation of antioxidant and antibacterial effects

M’barek, Islem; Işık, Zelal; Özay, Yasin; Özdemir, Sadin; Tollu, Gülşah; Moussaoui, Younes; Dizge, Nadir

doi:10.1016/j.seppur.2022.120815

Cited by 19 publications

(4 citation statements)

References 78 publications

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“…Te interaction of a concentration of 140 mg/ml of T. aphylla resulted in up to a 24 mm inhibition zone; this value was signifcantly diferent from the lowest concentration (35 mg/mL), which resulted in an 18 mm inhibition zone. Tese fndings are consistent with those of [24] who reported that crude extracts of T. aphylla demonstrated antibacterial activity and inhibition efects against both Gram-positive and Gram-negative bacteria and have promising antibacterial activity and can be a new natural source for bioactive compounds.…”

Section: Ethanolic Extract Antibacterial Activitysupporting

confidence: 87%

Assessment of the Antivirulence Potential of Tamarix aphylla Ethanolic Extract against Multidrug-Resistant Streptococcus mutans Isolated from Iraqi Patients

Aljubouri,

Alobaidi

2023

The Scientific World Journal

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Halophytes have long been used for medicinal purposes. However, their use was entirely empirical, with no knowledge of the bioactive compounds. The plant Tamarix aphylla L. has not drawn the deserving attention for its phytochemical and bioactive explorations, but available data expressed its needs to be attended for its potential. The Streptococcus mutans SpaP gene (cell-surface antigen) mediates the binding of these bacteria to tooth surfaces. The growing problem of antibiotic resistance triggered the research on alternative antimicrobial approaches. Our study aims to explore the activity of T. aphylla ethanolic extract against the virulence gene found in Streptococcus mutans pathogenic bacteria. Samples that were previously collected and identified in our previous work (in press) were obtained from different dental clinics and hospitals in Baghdad. Three nonbiofilm-forming bacterial isolates having multidrug resistance (MDR) for 10 antibiotics (doxycycline, ofloxacin, tetracycline, erythromycin, vancomycin, clindamycin, rifampicin, imipenem, amikacin, and cefepime) were selected to examine the potential of the T. aphylla ethanolic extract. The ethanolic extract showed high antimicrobial activity against MDR. Minimum inhibition concentration (MIC) for the extract was 17.5 mg/ml, while minimum bactericidal concentration (MBC) was 35 mg/ml. The phytochemical compounds present in the ethanolic extract were determined by using high-performance liquid chromatography (HPLC) which revealed that the leaves contain thirteen different alkaloids, twelve flavonoids, and four vitamins. The extract strongly inhibited a virulence property, the adherence of S. mutans which reduced during critical growth phases. The one-step RT-PCR method was used to study the SpaP gene expression of bacterial isolates which significantly reduced. In conclusion, extraction of T. aphylla leaves showed an antimicrobial effect against MDR S. mutans. The identified phytochemicals in the T. aphylla extract are reported to be biologically important and need further investigation to develop safe and cheap drugs.

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Section: Ethanolic Extract Antibacterial Activitysupporting

confidence: 87%

Assessment of the Antivirulence Potential of Tamarix aphylla Ethanolic Extract against Multidrug-Resistant Streptococcus mutans Isolated from Iraqi Patients

Aljubouri,

Alobaidi

2023

The Scientific World Journal

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“…The obtained microbial pellet was incubated with different concentrations of biological candidates ( 1 – 7 ) (62.5, 125, and 250 mg/L) at 37 °C for 90 min. The colonies were counted after incubation on NB agar for 24 h. The cell viability inhibition activities of biological candidates ( 1 – 7 ) were calculated using equation 2 [64]

\vcenter{\openup.5em\halign{$\displaystyle{#}$\cr {\rm Cell}\ {\rm viability}\ (\char37 )=({\rm A}{_{{\rm control}}}- {\rm A}{_{{\rm sample}}}/{\rm A}{_{{\rm control}}})\times 100\ \hfill\cr}}

…”

Section: Methodsmentioning

confidence: 99%

“…The colonies were counted after incubation on NB agar for 24 h. The cell viability inhibition activities of biological candidates (1-7) were calculated using equation (2). [64] Cell viability ð%Þ ¼ ðA control À A sample =A control Þ � 100 (2)…”

Section: Bacterial Viabilitymentioning

confidence: 99%

Fluorinated Phthalocyanine/Silver Nanoconjugates for Multifunctional Biological Applications

Albayrak

Farajzadeh

Yenilmez

et al. 2023

Chemistry & Biodiversity

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In this study, a new phthalonitrile derivative namely 4‐[(2,4‐difluorophenyl)ethynyl]phthalonitrile (1) and its metal phthalocyanines (2 and 3) were synthesized. The resultant compounds were conjugated to silver nanoparticles and characterized using transmission electron microscopy (TEM) images. The biological properties of compounds (1–3), their nanoconjugates (4–6), and silver nanoparticles (7) were examined for the first time in this study. The antioxidant activities of biological candidates (1–7) were studied by applying the 2,2‐diphenyl‐1‐picrylhydrazyl (DPPH) radical scavenging assay. The highest antioxidant activity was obtained 97.47 % for 200 mg/L manganese phthalocyanine‐silver nanoconjugates (6). The antimicrobial and antimicrobial photodynamic therapy (APDT) activities of biological candidates (1–7) were examined using a micro‐dilution assay. The highest MIC value was obtained 8 mg/L for nanoconjugate 6 against E. hirae. The studied compounds and their silver nanoconjugates exhibited high APDT activities against all the studied microorganisms. The most effective APDT activities were obtained 4 mg/L for nanoconjugates (5 and 6) against L. pneumophila and E. hirae, respectively. All the studied biological candidates displayed high cell viability inhibition activities against E. coli cell growth. The biofilm inhibition activities of the tested biological candidates were also investigated against S. aureus and P. Aeruginosa. Biological candidates (1–6) can be considered efficient metal nanoparticle‐based materials for multi‐disciplinary biological applications.

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“…Nowadays, the known product nanocellulose is considered an excellent biopolymer that has a large field of applications, such as biomedicine [ 6 , 19 , 20 ], food packaging [ 21 , 22 ], electrochemical performance [ 23 ], and as a giant reinforcement matrix [ 24 , 25 ]. Two kinds of nanocellulose, cellulose nanocrystals (CNC) and cellulose nanofibers (CNF), have been extensively researched in terms of isolation, characterization, and application.…”

Section: Introductionmentioning

confidence: 99%

Cellulose Nanofibers from Schinus molle: Preparation and Characterization

et al. 2022

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Schinus molle (SM) was investigated as a primary source of cellulose with the aim of discovering resources to generate cellulose nanofibers (CNF). The SM was put through a soda pulping process to purify the cellulose, and then, the fiber was treated with an enzymatic treatment. Then, a twin-screw extruder and/or masuko were utilized to help with fiber delamination during the nanofibrillation process. After the enzymatic treatment, the twin-screw extruder and masuko treatment give a yield of 49.6 and 50.2%, respectively. The optical and atomic force microscopy, morfi, and polymerization degrees of prepared cellulosic materials were established. The pulp fibers, collected following each treatment stage, demonstrated that fiber characteristics such as length and crystallinity varied according to the used treatment (mechanical or enzymatic treatment). Obviously, the enzymic treatment resulted in shorter fibers and an increased degree of polymerization. However, the CNF obtained after enzymatic and extrusion treatment was achieved, and it gave 19 nm as the arithmetic width and a Young’s modulus of 8.63 GPa.

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Nanocellulose synthesis from Tamarix aphylla and preparation of hybrid nanocellulose composites membranes with investigation of antioxidant and antibacterial effects

Cited by 19 publications

References 78 publications

Assessment of the Antivirulence Potential of Tamarix aphylla Ethanolic Extract against Multidrug-Resistant Streptococcus mutans Isolated from Iraqi Patients

Assessment of the Antivirulence Potential of Tamarix aphylla Ethanolic Extract against Multidrug-Resistant Streptococcus mutans Isolated from Iraqi Patients

Fluorinated Phthalocyanine/Silver Nanoconjugates for Multifunctional Biological Applications

Cellulose Nanofibers from Schinus molle: Preparation and Characterization

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