The Experts below are selected from a list of 132795 Experts worldwide ranked by ideXlab platform
Majid Montazer - One of the best experts on this subject based on the ideXlab platform.
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A robust friendly nano-encapsulated Plant Extract in hydrogel Tragacanth gum on cotton fabric through one single step in-situ synthesis and fabrication
Cellulose, 2016Co-Authors: Soraya Ghayempour, Majid MontazerAbstract:Encapsulation of various materials on textiles is an interesting task because of the controlled release and higher stability. Here, a robust cotton fabric was prepared through novel simultaneous treatment and nano-encapsulation of Chamomile Extract using Tragacanth gum (TG) as the wall material and an environmentally friendly binder with hydrogel properties. The nano-encapsulated and treated cotton (NE&TC) fabric was characterized by FESEM, FT-IR and UV-Vis spectrophotometry, which indicated the successful encapsulation of the Plant Extract within the TG and material and linkage on the cotton fabric. The peaks at 1736 and 1777 cm^−1 related to the TG and Chamomile Extract in the FT-IR spectrum and a strong peak around 270–400 nm in the UV-Vis spectrum of the NE&TC fabric confirmed the nano-encapsulation and treatment. The prepared NE&TC fabric indicated a relatively good washing and rubbing durability with reasonable release behavior. The DSC pattern of the NE&TC fabric showed a peak at 162 °C confirming the presence of Chamomile Extract in the nanocapsules. This article proposes a novel method for the application of TG as a natural polymer on cotton fabric for obtaining multifunction purposes including in-situ synthesis of encapsulated Chamomile Extract, stabilization of nanocapsules and introduction of hydrogel properties.
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tragacanth gum as a natural polymeric wall for producing antimicrobial nanocapsules loaded with Plant Extract
International Journal of Biological Macromolecules, 2015Co-Authors: Soraya Ghayempour, Majid MontazerAbstract:Abstract Tragacanth gum as a biocompatible and biodegradable polymer with good properties including emulsifying, viscosity and cross-linking ability can be used as the wall material in encapsulation of different compounds, specifically Plant Extracts. In this paper, for the first time, Tragacanth gum was used to produce nanocapsules containing Plant Extract through microemulsion method. The effect of different parameters on the average size of prepared nanocapsules in presence of aluminum and calcium chloride through ultrasonic and magnetic stirrer was investigated. The high efficient nanocapsules were prepared with spherical shape and smooth surface. The average size of nanocapsules prepared through ultrasonic using aluminum chloride (22 nm) was smaller than other products. The structure of prepared nanocapsules was studied by FT-IR spectroscopy. Antimicrobial activity of different nanocapsules against Escherichia coli , Staphylococcus aureus and Candida albicans was investigated by shake flask method during their release showed 100% microbial reduction after 12 h stirring.
Soraya Ghayempour - One of the best experts on this subject based on the ideXlab platform.
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A robust friendly nano-encapsulated Plant Extract in hydrogel Tragacanth gum on cotton fabric through one single step in-situ synthesis and fabrication
Cellulose, 2016Co-Authors: Soraya Ghayempour, Majid MontazerAbstract:Encapsulation of various materials on textiles is an interesting task because of the controlled release and higher stability. Here, a robust cotton fabric was prepared through novel simultaneous treatment and nano-encapsulation of Chamomile Extract using Tragacanth gum (TG) as the wall material and an environmentally friendly binder with hydrogel properties. The nano-encapsulated and treated cotton (NE&TC) fabric was characterized by FESEM, FT-IR and UV-Vis spectrophotometry, which indicated the successful encapsulation of the Plant Extract within the TG and material and linkage on the cotton fabric. The peaks at 1736 and 1777 cm^−1 related to the TG and Chamomile Extract in the FT-IR spectrum and a strong peak around 270–400 nm in the UV-Vis spectrum of the NE&TC fabric confirmed the nano-encapsulation and treatment. The prepared NE&TC fabric indicated a relatively good washing and rubbing durability with reasonable release behavior. The DSC pattern of the NE&TC fabric showed a peak at 162 °C confirming the presence of Chamomile Extract in the nanocapsules. This article proposes a novel method for the application of TG as a natural polymer on cotton fabric for obtaining multifunction purposes including in-situ synthesis of encapsulated Chamomile Extract, stabilization of nanocapsules and introduction of hydrogel properties.
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tragacanth gum as a natural polymeric wall for producing antimicrobial nanocapsules loaded with Plant Extract
International Journal of Biological Macromolecules, 2015Co-Authors: Soraya Ghayempour, Majid MontazerAbstract:Abstract Tragacanth gum as a biocompatible and biodegradable polymer with good properties including emulsifying, viscosity and cross-linking ability can be used as the wall material in encapsulation of different compounds, specifically Plant Extracts. In this paper, for the first time, Tragacanth gum was used to produce nanocapsules containing Plant Extract through microemulsion method. The effect of different parameters on the average size of prepared nanocapsules in presence of aluminum and calcium chloride through ultrasonic and magnetic stirrer was investigated. The high efficient nanocapsules were prepared with spherical shape and smooth surface. The average size of nanocapsules prepared through ultrasonic using aluminum chloride (22 nm) was smaller than other products. The structure of prepared nanocapsules was studied by FT-IR spectroscopy. Antimicrobial activity of different nanocapsules against Escherichia coli , Staphylococcus aureus and Candida albicans was investigated by shake flask method during their release showed 100% microbial reduction after 12 h stirring.
K Bharathi - One of the best experts on this subject based on the ideXlab platform.
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Plant Extract mediated synthesis of zno nanoparticles using pongamia pinnata and their activity against pathogenic bacteria
Advanced Powder Technology, 2015Co-Authors: M Sundrarajan, Subramanian Ambika, K BharathiAbstract:Abstract Bio-mediated synthesis of metal oxide nanoparticles using Plant Extract is a promising alternative of traditional chemical synthesis. The present study reports the synthesis of ZnO nanoparticles by biological method. Highly stable and hexagonal phase ZnO nanoparticles were synthesized using Pongamia pinnata leaves Extract and were characterized by XRD, UV–vis, DLS, SEM, TEM and FT-IR spectroscopy. The synthesized ZnO nanoparticles were confirmed by XRD and FTIR spectra. Morphology studies indicates spherical nature of the ZnO NPs and EDX shows the highly pure ZnO nanoparticles. The antibacterial activity of ZnO nanoparticles and ZnO nanoparticles coated cotton fabric were tested against Staphylococcus aureus (gram positive) and Escherichia coli (gram negative) organisms by agar diffusion method. Finally, the current study has clearly demonstrated that the ZnO NPs are responsible for significant higher antibacterial activities. Therefore, the study reveals an efficient, ecofriendly and simple method for the green synthesis of multifunctional ZnO NPs using green synthetic approach.
Kannaiyan Pandian - One of the best experts on this subject based on the ideXlab platform.
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Shape- and Size-Controlled Synthesis of Silver Nanoparticles Using Aloe vera Plant Extract and Their Antimicrobial Activity
Nanoscale Research Letters, 2016Co-Authors: Kaliyaperumal Logaranjan, Anasdass Jaculin Raiza, Subash C. B. Gopinath, Yeng Chen, Kannaiyan PandianAbstract:Biogenic synthesis of silver nanoparticles (AgNP) was performed at room temperature using Aloe vera Plant Extract in the presence of ammoniacal silver nitrate as a metal salt precursor. The formation of AgNP was monitored by UV-visible spectroscopy at different time intervals. The shape and size of the synthesized particle were visualized by scanning electron microscopy (SEM) and transmission electron microscopy (TEM) observations. These results were confirmed by X-ray powder diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR) analyses and further supported by surface-enhanced Raman spectroscopy/Raman scattering (SERS) study. UV-visible spectrum has shown a sharp peak at 420 nm and further evidenced by FTIR peak profile (at 1587.6, 1386.4, and 1076 cm^−1 with corresponding compounds). The main band position with SERS was noticed at 1594 cm^−1 (C–C stretching vibration). When samples were heated under microwave radiation, AgNP with octahedron shapes with 5–50 nm were found and this method can be one of the easier ways to synthesis anisotropic AgNP, in which the Plant Extract plays a vital role to regulate the size and shape of the nanoparticles. Enhanced antibacterial effects (two- to fourfold) were observed in the case of Aloe vera Plant protected AgNP than the routinely synthesized antibiotic drugs. Graphical Abstract Shape and size-controlled synthesis of silver nanoparticles using Aloe vera Plant Extract
Santiago P Aubourg - One of the best experts on this subject based on the ideXlab platform.
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effect of pre soaking whole pelagic fish in a Plant Extract on sensory and biochemical changes during subsequent frozen storage
Lwt - Food Science and Technology, 2007Co-Authors: A Lugasi, Vanesa Losada, J Hovari, Vera Lebovics, I Jakoczi, Santiago P AubourgAbstract:Abstract Plant Extract treatments have largely shown a positive effect on inhibiting the quality loss during the frozen storage of minced and filleted fish products. In the present case, the effect of a Plant Extract on a whole fish product was checked. For it, whole fresh horse mackerel was soaked in a commercial Extract solution during 60 min and then kept frozen up to 12 months at −20 °C. Sampling was carried out on the initial material and at months 1, 3, 5, 7, 9 and 12. Two parallel experiments consisting on untreated fish (Blank Control) and water treated fish (Water Control) were carried out in the same conditions. Lipid damage was measured by lipolysis development (free fatty acid formation), rancidity development (conjugated dienes (CDs), secondary oxidation compounds, fluorescent compounds and cholesterol oxides) and sensory (odour, firmness and colour) analyses. As a result of the previous Plant Extract treatment, better odour and colour scores were obtained that led to a larger shelf-life time (7 months) than in the two controls (5 months), according to the sensory analysis. Water treatment of fish (Water Control) also showed some better results in sensory (odour and colour) analysis than the Blank Control, that could be related to the elimination of some prooxidant molecules included in fish. Some biochemical indices (CDs and free fatty acids) also provided a damage inhibition ( P 0.05 ) in the 9–12 months period as a result of the Plant treatment and water treatment; however, fluorescence and cholesterol oxide detections did not show differences ( P > 0.05 ) when compared to the Blank Control. The present experiment provides promising results for soaking a pelagic whole fish in an aqueous Plant Extract as a previous step to its commercialization as a frozen product.
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damage inhibition during frozen storage of horse mackerel trachurus trachurus fillets by a previous Plant Extract treatment
Journal of Food Science, 2006Co-Authors: Santiago P Aubourg, Vera Lebovics, Andrea Lugasi, Judit Hovari, Carmen Pineiro, Ivan JakocziAbstract:We investigated the effect of a commercial Plant Extract, Rosmol-P (RP) on the stability of fish during frozen storage. Horse mackerel (Trachurus trachurus) fillets were soaked in water (water control) and 2 RP concentrations (RP-1 = 0.333%; RP-2 = 1.333%) and compared with untreated fillets (blank control). Fluorescence detection and thiobarbitoric acid index showed a lower oxidation development for both RP treatments than for both controls, especially in the case of the highest concentration (RP-2). The decrease in ghitathione peroxidase activity was found to be shower in the case of the RP-2 treatment. The sensory analysis showed an increased shelf-life according to the sequence blank control < water control < RP-1, RP-2.
