Synthesis and antifungal activity of chitosan-silver nanocomposite synergize fungicide against<i>Phytophthora capsici</i>

Le, Van Thu; Bạch, Long Giang; Le, Ngoc Thuy Trang; Ngoc, Uyen Thi Phan; Tran, Huong; Nguyen, Dai Hai

doi:10.1080/10601325.2019.1586439

Cited by 48 publications

(27 citation statements)

References 45 publications

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“…In recent years, researches on the use of nanocomposites have greatly expanded in the field of plant protection due to their high efficacy and eco-friendly nature [123]. For example, Ag-incorporated chitosan nanocomposites (Ag@CS) with fungicides antracol show an increased antifungal activity compared to that of each component alone [124]. Again, the development of nanocomposites of Bacillus thuringiensis (Bt) containing active Bt has further increased the efficacy and shelf life of pesticides and reduced the dosage required previously.…”

Section: Nanomaterials Accelerate Plant Adaptation To Progressive mentioning

confidence: 99%

Applications of Nanotechnology in Plant Growth and Crop Protection: A Review

et al. 2019

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In the era of climate change, global agricultural systems are facing numerous, unprecedented challenges. In order to achieve food security, advanced nano-engineering is a handy tool for boosting crop production and assuring sustainability. Nanotechnology helps to improve agricultural production by increasing the efficiency of inputs and minimizing relevant losses. Nanomaterials offer a wider specific surface area to fertilizers and pesticides. In addition, nanomaterials as unique carriers of agrochemicals facilitate the site-targeted controlled delivery of nutrients with increased crop protection. Due to their direct and intended applications in the precise management and control of inputs (fertilizers, pesticides, herbicides), nanotools, such as nanobiosensors, support the development of high-tech agricultural farms. The integration of biology and nanotechnology into nonosensors has greatly increased their potential to sense and identify the environmental conditions or impairments. In this review, we summarize recent attempts at innovative uses of nanotechnologies in agriculture that may help to meet the rising demand for food and environmental sustainability.

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Section: Nanomaterials Accelerate Plant Adaptation To Progressive mentioning

confidence: 99%

Applications of Nanotechnology in Plant Growth and Crop Protection: A Review

et al. 2019

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“…Nanoscale materials have been extensively studied with respect to their potential applications and synthesis procedures [1][2][3][4][5][6][7]. Among the research areas, the modification of methods for controlled synthesis of triangular silver nanoplates has attracted a lot of attention in recent years due to the widespread application of silver nanoplates in various fields, such as surface-enhanced Raman scattering (SERS) detection or manufacture of antibacterial agents [8][9][10][11][12][13]. Due to the high anisotropy of sharp vertices and edges, triangular silver nanoplates can exhibit unique optical [14] and antimicrobial properties [12].…”

Section: Introductionmentioning

confidence: 99%

“…However, to the best of our knowledge, there are very few works using the mixed solutions of gelatin and chitosan as the stabilizing system in the synthesis of triangular AgNPs. The mixture of gelatin and chitosan could be an ideal candidate in the chemical reduction method due to several advantages, including easy adjustment of the environment viscosity [9,28,29], electrostatic repulsion [28], and the presence of capping ligands for the selective facets of particles [30]. To be specific, the use of a mixed solution as the stabilizing system permits effortless adjustment of the solution viscosity by varying the pH and ionic strength conditions [28], which in turn governs the growth process of triangular AgNPs.…”

Section: Introductionmentioning

confidence: 99%

Controlled Synthesis of Triangular Silver Nanoplates by Gelatin–Chitosan Mixture and the Influence of Their Shape on Antibacterial Activity

Phung

Nguyen

et al. 2019

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Triangular silver nanoplates were prepared by using the seeding growth approach with the presence of citrate-stabilized silver seeds and a mixture of gelatin-chitosan as the protecting agent. By understanding the critical role of reaction components, the synthesis process was improved to prepare the triangular nanoplates with high yield and efficiency. Different morphologies of silver nanostructures, such as triangular nanoplates, hexagonal nanoprisms, or nanodisks, can be obtained by changing experimental parameters, including precursor AgNO 3 volume, gelatin-chitosan concentration ratios, and the pH conditions. The edge lengths of triangular silver nanoplates were successfully controlled, primarily through the addition of silver nitrate under appropriate condition. As-prepared triangular silver nanoplates were characterized by transmission electron microscopy (TEM), dynamic light scattering (DLS), UV-Vis, Fourier transform infrared spectroscopy (FT-IR), and X-Ray diffraction (XRD). Silver nanoplates had an average edge length of 65-80 nm depending on experimental conditions and exhibited a surface plasma resonance absorbance peak at 340, 450, and 700 nm. The specific interactions of gelatin and chitosan with triangular AgNPs were demonstrated by FT-IR. Based on the characterization, the growth mechanism of triangular silver nanoplates was theoretically proposed regarding the twinned crystal of the initial nanoparticle seeds and the crystal face-blocking role of the gelatin-chitosan mixture. Moreover, the antibacterial activity of triangular silver nanoplates was considerably improved in comparison with that of spherical shape when tested against Gram-positive and Gram-negative bacteria species, with 6.0 ug/mL of triangular silver nanoplates as the MBC (Minimum bactericidal concentration) for Escherichia coli and Vibrio cholera, and 8.0 ug/mL as the MBC for Staphylococcus aureus and Pseudomonas aeruginosa. The MIC (Minimum inhibitory concentration) of triangular Ag nanoplates was 4.0 ug/mL for E. coli, V. cholera, S. aureus, and P. aeruginosa.

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“…Normally, bacteria in the human body produce hydrolytic or reductive enzymes that can break down different types of polysaccharides including dextrin, chitosan, and pectin [131,132]. An example of reductive enzyme is azo-reductase, while hydrolytic enzymes may include glycosidases [8,92].…”

Section: Recent Trends Of Stimuli-responsive Dendrimers In Controlmentioning

confidence: 99%

Recent Progress and Advances of Multi-Stimuli-Responsive Dendrimers in Drug Delivery for Cancer Treatment

Nguyen

Cao

et al. 2019

Pharmaceutics

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Despite the fact that nanocarriers as drug delivery systems overcome the limitation of chemotherapy, the leakage of encapsulated drugs during the delivery process to the target site can still cause toxic effects to healthy cells in other tissues and organs in the body. Controlling drug release at the target site, responding to stimuli that originated from internal changes within the body, as well as stimuli manipulated by external sources has recently received significant attention. Owning to the spherical shape and porous structure, dendrimer is utilized as a material for drug delivery. Moreover, the surface region of dendrimer has various moieties facilitating the surface functionalization to develop the desired material. Therefore, multi-stimuli-responsive dendrimers or ‘smart’ dendrimers that respond to more than two stimuli will be an inspired attempt to achieve the site-specific release and reduce as much as possible the side effects of the drug. The aim of this review was to delve much deeper into the recent progress of multi-stimuli-responsive dendrimers in the delivery of anticancer drugs in addition to the major potential challenges.

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Synthesis and antifungal activity of chitosan-silver nanocomposite synergize fungicide againstPhytophthora capsici

Cited by 48 publications

References 45 publications

Applications of Nanotechnology in Plant Growth and Crop Protection: A Review

Applications of Nanotechnology in Plant Growth and Crop Protection: A Review

Controlled Synthesis of Triangular Silver Nanoplates by Gelatin–Chitosan Mixture and the Influence of Their Shape on Antibacterial Activity

Recent Progress and Advances of Multi-Stimuli-Responsive Dendrimers in Drug Delivery for Cancer Treatment

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