Turning hydrophilic bacteria into biorenewable hydrophobic material with potential antimicrobial activity via interaction with chitosan

Hanpanich, Orakan; Wongkongkatep, Pravit; Pongtharangkul, Thunyarat; Wongkongkatep, Jirarut

doi:10.1016/j.biortech.2017.01.047

Cited by 16 publications

(9 citation statements)

References 40 publications

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“…Mostly, microorganisms have a negative charge close to the neutral and higher than the pH values. 48 OALH and TALS have more negative charges at the beginning of the fermentation process. Whereas the value of negative charges decreases because of the decreasing pH value during the fermentation process.…”

Section: Resultsmentioning

confidence: 96%

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One-Step and Low-Cost Designing of Two-Layered Active-Layer Superhydrophobic Silicalite-1/PDMS Membrane for Simultaneously Achieving Superior Bioethanol Pervaporation and Fouling/Biofouling Resistance

Kamelian

Mohammadi

2020

ACS Appl. Mater. Interfaces

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Recently, the coupling of biofuel fermentation broths and pervaporation has been receiving increasing attention. Some challenges, such as the destructive effects of constituents of the real fermentation broth on the membrane performances, the lethal effects of the membrane surface chemical modifiers on the microorganisms, and being expensive, are against this concept. For the first time, a continuous study on the one-step and low-cost preparation of superhydrophobic membranes for bioethanol separation is made to address these challenges. In our previous work, spraying as a fast, scalable, and low-cost procedure was applied to fabricate the one-layered active-layer hydrophobic (OALH) silicalite-1/polydimethylsiloxane (PDMS) membrane on the low-cost mullite support. In this work, the spraying method was adopted to fabricate a two-layered active-layer superhydrophobic (TALS) silicalite-1/PDMS membrane, where the novel active layer consisted of two layers with different hydrophobicities and densities. Contact-angle measurements, surface charge determination, scanning electron microscopy, atomic force microscopy, and pervaporation separation using a 5 wt % ethanol solution were used to statically evaluate the fouling/biofouling resistance and pervaporation performances of OALH and TALS membranes in this study. The TALS membrane presented a better resistance and performance. For dynamic experiments, the Box− Behnken design was used to identify the effects of substrates, microorganisms, and nutrient contents as the leading indicators of fermentation broth on the TALS membrane performances for the long-term utilization. The maximum performances of 1.88 kg/m 2 • h, 32.34, and 59.04 kg/m 2 •h concerning the permeation flux, separation factor, and pervaporation separation index were obtained, respectively. The dynamic fouling/biofouling resistance of the TALS membrane was also characterized using energy-dispersive X-ray spectroscopy of all the tested membranes. The TALS membrane demonstrated the synergistic resistance of membrane fouling and biofouling. Eventually, the novel TALS membrane was found to have potential for biofuel recovery, especially bioethanol.

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Section: Resultsmentioning

confidence: 96%

“…Thus, both microorganisms had a negative charge during the fermentation process. Mostly, microorganisms have a negative charge close to the neutral and higher than the pH values . OALH and TALS have more negative charges at the beginning of the fermentation process.…”

Section: Results and Discussionmentioning

confidence: 99%

One-Step and Low-Cost Designing of Two-Layered Active-Layer Superhydrophobic Silicalite-1/PDMS Membrane for Simultaneously Achieving Superior Bioethanol Pervaporation and Fouling/Biofouling Resistance

Kamelian

Mohammadi

2020

ACS Appl. Mater. Interfaces

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“…The negatively charged cell membrane proteins or functional groups interact with metal ion (silver) in the nanocomplex which can influence the surface charge of cells . A number of prior studies used DLS technique to study the bacterial membrane damaging properties of nanoparticles (especially Ag). , These studies prompted us to carry out DLS study (zeta potentials and hydrodynamic diameters) for measuring the bacterial membrane properties of the presently described AgNNPs. Generally the surface charge is a crucial factor for aggregation or dispersion of particles. , …”

Section: Resultsmentioning

confidence: 99%

“…After 6 h of incubation time, bacterial cells were collected by centrifugation and washed with 1X PBS, fixed in 2% formaldehyde followed by dehydration using subsequent washings with aqueous ethanol (50, 60, 70, and 90%) and finally with pure ethanol. The DLS studies of this processed bacteria were performed according to reported literature, 20 The processed bacterial samples (E. coli and B. subtilis) were also used for analyzing membrane damage and the bacterial aggregation was determined by staining with dyes (FITC, 1 μg/mL; and DAPI, 1 μg/mL) using confocal microscopy (Nikon, Ti Eclipx).…”

Section: Characterization Techniquesmentioning

confidence: 99%

Ag₂[Fe(CN)₅NO] Nanoparticles Exhibit Antibacterial Activity and Wound Healing Properties

Rao¹,

Kotcherlakota²,

Nethi³

et al. 2018

ACS Biomater. Sci. Eng.

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Therapeutic agents harboring both wound healing and antibacterial activities have much demand in biomedical applications. Development of such candidates with clinically approved materials adds more advantages toward these applications. Recently, silver metal complex nanomaterials have been playing a major role in medical uses especially for antibacterial activity and wound healing. In this report, we designed and synthesized silver nitroprusside complex nanoparticles (abbreviated as AgNNPs) using sodium nitroprusside and silver nitrate (both are FDA approved precursors). The nanoparticles (AgNNPs) were thoroughly characterized by various physicochemical techniques such as XRD, FTIR, TGA, DLS, EDAX, Raman, ICP-OES, HRTEM, and FESEM. The cell viability assay in normal cells (EA.hy 926 cells, NIH 3T3) using MTT reagents and CEA assay (CEA: Chick embryo angiogenesis assay) in fertilized eggs demonstrate the biocompatibility of AgNNPs. These nanoparticles show effective antibacterial activity against both Gram positive and Gram negative bacteria through membrane and DNA damage. Additionally, AgNNPs accelerate the wound healing in C57BL6 mice by altering the macrophages from M1 to M2. Considering the results together, the current study may offer the development of new silver nanocomplex nanomaterials that shows synergistic effect on antibacterial activity and wound healing (2-in-1-system). To the best of our knowledge, this is the first report for the synthesis, characterization, and biomedical applications of silver nitroprusside nanoparticles.

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“…In this case, we can say that the tested material only has a bacteriostatic effect [13,28]. It is possible that the material affected the permeability of the cellular membrane but was unable to obtain the equilibrium needed to destroy the cellular membrane and to cause bacterial death [61][62][63]. When the cellulose was functionalized with HDTBPBr, it was observed that the inhibition rate is proportional with the functionalization ratio.…”

Section: Antimicrobial Effect Of Ch-hdtbpbr and Cel-hdtbpbrmentioning

confidence: 99%

Symmetry between Structure–Antibacterial Effect of Polymers Functionalized with Phosphonium Salts

et al. 2022

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In actual context, when the terms of biomass and bioenergy are extensively used, it becomes clear that the comparative study of some biopolymers, such as cellulose and chitosan, can offer a large usage range, based on the scientific progress obtained in the biomaterials field. Starting from the structural similarity of these two polymers, we synthesized composite materials by grafting on their surface biocide substances (phosphonium salts). After testing the biocidal effect, we can conclude that the antibacterial effect depends on the ratio of support to phosphonium salt, influenced by the interaction between the cationic component of the biocides and by the anionic component of the bacterial cellular membrane. It was also observed that for the materials obtained by cellulose functionalization with tri-n-butyl-hexadecyl phosphonium bromide, the bacterial effect on E. coli strain was much better when chitosan was used as the support material.

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Turning hydrophilic bacteria into biorenewable hydrophobic material with potential antimicrobial activity via interaction with chitosan

Cited by 16 publications

References 40 publications

One-Step and Low-Cost Designing of Two-Layered Active-Layer Superhydrophobic Silicalite-1/PDMS Membrane for Simultaneously Achieving Superior Bioethanol Pervaporation and Fouling/Biofouling Resistance

One-Step and Low-Cost Designing of Two-Layered Active-Layer Superhydrophobic Silicalite-1/PDMS Membrane for Simultaneously Achieving Superior Bioethanol Pervaporation and Fouling/Biofouling Resistance

Ag₂[Fe(CN)₅NO] Nanoparticles Exhibit Antibacterial Activity and Wound Healing Properties

Symmetry between Structure–Antibacterial Effect of Polymers Functionalized with Phosphonium Salts

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Turning hydrophilic bacteria into biorenewable hydrophobic material with potential antimicrobial activity via interaction with chitosan

Cited by 16 publications

References 40 publications

One-Step and Low-Cost Designing of Two-Layered Active-Layer Superhydrophobic Silicalite-1/PDMS Membrane for Simultaneously Achieving Superior Bioethanol Pervaporation and Fouling/Biofouling Resistance

One-Step and Low-Cost Designing of Two-Layered Active-Layer Superhydrophobic Silicalite-1/PDMS Membrane for Simultaneously Achieving Superior Bioethanol Pervaporation and Fouling/Biofouling Resistance

Ag2[Fe(CN)5NO] Nanoparticles Exhibit Antibacterial Activity and Wound Healing Properties

Symmetry between Structure–Antibacterial Effect of Polymers Functionalized with Phosphonium Salts

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Ag₂[Fe(CN)₅NO] Nanoparticles Exhibit Antibacterial Activity and Wound Healing Properties