Humic acid particle embedded super porous gum Arabic cryogel network for versatile use

Suner, Selin S.; Şahiner, Nurettin

doi:10.1002/pat.4097

Cited by 9 publications

(5 citation statements)

References 32 publications

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“…Escherichia coli, Staphylococcus aureus, and Bacillus subtilis strains are selected to taste the antibacterial efficiency and proposed cryogel disinfects them well. [119] Tannic acid (TA) is a natural polyphenol that can be found in plant tissue. Its structure is made up of central glucose, where ten gallic acids bond via steric interactions.…”

Section: Natural Antimicrobial Molecules In Cryogelsmentioning

confidence: 99%

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Antibacterial activity of natural polymer gels and potential applications without synthetic antibiotics

Hamidi

Monajjemzadeh

Siahi‐Shadbad

et al. 2022

Polymer Engineering & Sci

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Antibiotics' use has increased, resulting in disadvantages like patients' drug resistance. Consequently, urgent action is required to develop a new generation of antibacterial agents. Most antibacterial platforms still require a modification with further antibacterial agents (e.g., antibiotics) for adequate antibacterial efficiency. Thus, a nonantibiotic methodology is immediately needed. Furthermore, bactericidal agents used for this purpose are usually based on metal nanoparticles, carbon materials, and polymers. Still, chemicals, antibiotics, and biocides lead to environmental damage. Therefore, the help of biocompatible yet durable materials and polymers is highly appreciated. In addition, if a polymer is not biodegradable, it will remain in the environment for more than one hundred years due to its low degradation rate. Moreover, non‐biodegradable polymers are harmful to in vivo applications. Hence, the use of biodegradable and non‐toxic materials has received many considerations. Over the last few years, the design and synthesis of new polymer gels have gained increasing attention. A polymer gel, also known as a hydrogel, is a three‐dimensional and cross‐linked network filled with water or other liquid solvents. Besides, the hydrogels supercritical drying method results in aerogels, and the freeze‐drying method generates cryogels, where their porous and sponge‐like structures are preserved. Additionally, antibacterial polymer gels are a new generation of polymers considered attractive due to their unique properties. The most recent studies and the latest innovations in polymer gels and hybrid polymers with intrinsic antibacterial properties were discussed in the present review. The reviewed studies from 2015 to April 2022 showed a tremendous revival in research about biopolymer hydrogel, aerogel, and cryogel as antibacterial agents.

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Section: Natural Antimicrobial Molecules In Cryogelsmentioning

confidence: 99%

“…Escherichia coli , Staphylococcus aureus , and Bacillus subtilis strains are selected to taste the antibacterial efficiency and proposed cryogel disinfects them well. [ 119 ]…”

Section: Cryogelsmentioning

confidence: 99%

Antibacterial activity of natural polymer gels and potential applications without synthetic antibiotics

Hamidi

Monajjemzadeh

Siahi‐Shadbad

et al. 2022

Polymer Engineering & Sci

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“…If the freezing takes place at a higher temperature (e.g.,−20 to 8 • C), ice nucleation is slower and the nuclei tend to grow into larger ice crystals, which results in the preparation of materials with large and randomly oriented pores after the freeze-drying process. The direction of freezing has a major effect on pore morphology; thus, by controlling the direction of freezing, the growth of ice crystal can be orientated in one direction due to a great temperature gradient across the sample with the ice crystals growing from the low to the higher temperature end [46]. Low temperatures (−10 to −25 • C) in water-based solvent systems enable the development of large solvent crystals and thus pore sizes [27].…”

Section: Application Of Immobilised Bacteriamentioning

confidence: 99%

“…In contrast to conventional antibiotics, some AMPs can reduce the inflammatory response by blocking lipopolysaccharide (LPS)-induced cytokine release by macrophages, which is a major cause of sepsis during antibiotic therapy [93]. Sahiner et al describe a design and application of Gum Arabic linked with divinyl sulfone cryogel and degradable and biocompatible humic acid nanoparticles crosslinked by trimethylolpropane triglycidyl ether, poly(ethylene glycol) diglycidyl ether, and trisodium trimetaphosphate [46]. These composite cryogels with silver or copper nanoparticles possess antimicrobial activity against Escherichia coli, Staphylococcus aureus, and Bacillus subtilis and can be considered for the final stage of water treatment [46].…”

Section: Applications Of Macroporous Cryogels For the Remediation Of mentioning

confidence: 99%

“…Sahiner et al describe a design and application of Gum Arabic linked with divinyl sulfone cryogel and degradable and biocompatible humic acid nanoparticles crosslinked by trimethylolpropane triglycidyl ether, poly(ethylene glycol) diglycidyl ether, and trisodium trimetaphosphate [46]. These composite cryogels with silver or copper nanoparticles possess antimicrobial activity against Escherichia coli, Staphylococcus aureus, and Bacillus subtilis and can be considered for the final stage of water treatment [46]. Shirbin et al [94] developed a synthetic oligopeptidebased macroporous cryogel for water purification using a polylysine-b-polyvaline polymer linked by GA.…”

Section: Applications Of Macroporous Cryogels For the Remediation Of mentioning

confidence: 99%

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Polymeric Materials Used for Immobilisation of Bacteria for the Bioremediation of Contaminants in Water

2021

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Bioremediation is a key process for reclaiming polluted soil and water by the use of biological agents. A commonly used approach aims to neutralise or remove harmful pollutants from contaminated areas using live microorganisms. Generally, immobilised microorganisms rather than planktonic cells have been used in bioremediation methods. Activated carbon, inorganic minerals (clays, metal oxides, zeolites), and agricultural waste products are acceptable substrates for the immobilisation of bacteria, although there are limitations with biomass loading and the issue with leaching of bacteria during the process. Various synthetic and natural polymers with different functional groups have been used successfully for the efficient immobilisation of microorganisms and cells. Promise has been shown using macroporous materials including cryogels with entrapped bacteria or cells in applications for water treatment and biotechnology. A cryogel is a macroporous polymeric gel formed at sub-zero temperatures through a process known as cryogelation. Macroporous hydrogels have been used to make scaffolds or supports for immobilising bacterial, viral, and other cells. The production of composite materials with immobilised cells possessing suitable mechanical and chemical stability, porosity, elasticity, and biocompatibility suggests that these materials are potential candidates for a range of applications within applied microbiology, biotechnology, and research. This review evaluates applications of macroporous cryogels as tools for the bioremediation of contaminants in wastewater.

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Sulfur Chemistry in Polymer and Materials Science

Mutlu

Ceper

et al. 2018

Macromol. Rapid Commun.

278

220

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The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/marc.201800650. ChemistryBefore moving to the recent advances within the last 5 years in the diverse applications of sulfur chemistry in polymer and Sulfur-Containing PolymersSulfur and its functional groups are major players in an area of exciting research taking place in modern polymer and materials science, both in academia and industry. In fact, manifold sulfur-based reactions that are both exceptionally versatile as well as tremendously useful have been implemented, and further utilized for the design and preparation of polymeric materials that lead to a plethora of applications ranging from medicine to optics and nanotechnology to separation science. Hence, within this review, an overview of strategies and developments used over the last 5 years to reinforce the importance of the sulfur functional group in modern polymer and materials science is presented. In particular, many important references in the primary literature of sulfur chemistry are referred to, including thiol-ene, thiol-yne, thiol-Michael addition, disulfide cross-linking, and thiol-disulfide exchange, among others, by explaining and illustrating the important principles. Last but not least, the grand aim to underpin the importance of sulfur in modern polymer and materials science is achieved by presenting selected examples in diverse fields and postulating the respective potential for real-world applications. he is now a full professor at KIT.sulfur atoms, and tetraphenylethene-bearing di(alkyl bromide) (Scheme 3). The yield of the polymerization was dependent on the di(alkyl bromide) monomer; the longer spacer between the aromatic moiety and the reactive bromide end groups Scheme 1. The discussion henceforth focuses on the synthesis of polymers possessing the depicted sulfur functional groups. Scheme 2.Representative examples of polythioethers prepared via A) the nucleophilic substitution reaction between an electrophilic dihalide with nucleophilic derivatives of dithiols under alkaline conditions; B) the thiol-ene/yne addition reaction between AA and BB type monomers (i.e., dithiols and dienes/diynes); and C) radical or ionic ring-opening of sulfurcontaining strained rings.Scheme 3. The thiol-bromo polymerization of conformationally fixed monomers to provide multifunctional polymers. [19] Macromol. Rapid Commun. 2019, 40, 1800650 Scheme 4. The regioselective selective nucleophilic aromatic substitution between thiol and fluorinated aromatic compounds, the para-fluorothiol reaction (PFTR).Scheme 5. Synthesis of a linear polymer via PFTR-reaction. [21]

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Humic acid particle embedded super porous gum Arabic cryogel network for versatile use

Cited by 9 publications

References 32 publications

Antibacterial activity of natural polymer gels and potential applications without synthetic antibiotics

Antibacterial activity of natural polymer gels and potential applications without synthetic antibiotics

Polymeric Materials Used for Immobilisation of Bacteria for the Bioremediation of Contaminants in Water

Sulfur Chemistry in Polymer and Materials Science

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