Synthesis and antimicrobial effects of colloidal silver nanoparticles in chitosan by<i>γ</i>-irradiation

Phú, Đặng Văn; Lang, Vo Thi Kim; Lan, Nguyen Thi; Duy, Nguyễn Ngọc; Chau, Nguyen Duc; Du, Bùi Duy; Cam, Bui Duy; Hiến, Nguyễn Quốc

doi:10.1080/17458080903383324

Cited by 54 publications

(40 citation statements)

References 22 publications

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“…It is clear that slightly basic medium (pH 7. solution before irradiation significantly affected the size of AuNPs. The same results of the pH effect were also reported by Phu et al on radiolytic synthesis of AgNPs stabilized by chitosan [37]. Particularly, the sizes of AgNPs were of 15.0 and 7.3 nm for pH 3 and 6, respectively.…”

Section: Effect Of Ph Results Of Uv-vis Spectra Insupporting

confidence: 76%

Synthesis of Gold Nanoparticles Stabilized in Dextran Solution by Gamma Co-60 Ray Irradiation and Preparation of Gold Nanoparticles/Dextran Powder

Diem

Thao

Phú

et al. 2017

Journal of Chemistry

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Gold nanoparticles (AuNPs) in spherical shape with diameter of 6-35 nm stabilized by dextran were synthesized by -irradiation method. The AuNPs were characterized by UV-Vis spectroscopy and transmission electron microscopy. The influence of pH, Au 3+ concentration, and dextran concentration on the size of AuNPs was investigated. Results indicated that the smallest AuNPs size (6 nm) and the largest AuNPs size (35 nm) were obtained for pH of 1 mM Au 3+ /1% dextran solution of 5.5 and 7.5, respectively. The smaller Au 3+ concentration favored smaller size and conversely the smaller dextran concentration favored bigger size of AuNPs. AuNPs powders were prepared by spay drying, coagulation, and centrifugation and their sizes were also evaluated. The purity of prepared AuNPs powders was also examined by energy dispersive X-ray (EDX) analysis. Thus, the as-prepared AuNPs stabilized by biocompatible dextran in solution and/or in powder form can be potentially applied in biomedicine and pharmaceutics.

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Section: Effect Of Ph Results Of Uv-vis Spectra Insupporting

confidence: 76%

Synthesis of Gold Nanoparticles Stabilized in Dextran Solution by Gamma Co-60 Ray Irradiation and Preparation of Gold Nanoparticles/Dextran Powder

Diem

Thao

Phú

et al. 2017

Journal of Chemistry

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“…The reason may be due to the cumbersomeness of high WSC Mw, which could antiagglomerate Au clusters to prevent forming big AuNPs better than low WSC Mw. Phu et al [13] obtained similar results in the study of the effect of chitosan Mw on radiation synthesis of silver nanoparticles.…”

Section: Synthesis and Characterization Of Aunpssupporting

confidence: 67%

“…A number of methods have been reported for the synthesis of AuNPs, such as chemical [3,[5][6][7], photochemical [8], sonochemical [9] and radiolytic [10][11][12] reduction. In these methods, ionizing radiation has been considered as an effective method due to several advantages, as described in our previous papers [12,13]; especially, mass production can be carried out and satisfies the requirements of clean production.…”

Section: Introductionmentioning

confidence: 99%

Electron beam/ γ -ray irradiation synthesis of gold nanoparticles and investigation of antioxidant activity

Nguyen

Dang

et al. 2014

Adv. Nat. Sci: Nanosci. Nanotechnol.

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Colloidal solutions of 1 mM gold nanoparticles (AuNPs) were synthesized by γ-ray Co-60 and electron beam irradiation using 1% water soluble chitosan (WSC) with different molecular weight (Mw) as stabilizer. The AuNPs size measured from TEM images was of 7.1 and 15.1 nm for electron beam and γ-ray Co-60, respectively. The AuNPs sizes of 9.8, 15.1 and 22.4 nm stabilized by different WSC Mw of 155 × 10 3 , 78 × 10 3 and 29 × 10 3 g mol −1 , respectively, were also synthesized by γ-ray Co-60 irradiation. Antioxidant activity of AuNPs with different size from 7.1 to 20.0 nm was investigated using free radical 2,2′-azino-bis (3-ethylbenzothiazoline-6sulphonic acid) (ABTS •+ ). Results indicated that the smaller size of AuNPs exhibited higher antioxidant activity. In particular, the antioxidant efficiency was of nearly 100, 75, 65, 52 and 30% for 7.1, 9.8, 15.1, 20.0 nm AuNPs and WSC 0.1%, respectively, at the same reaction time of 270 min. Thus, due to the compatibility of WSC and the unique property of AuNPs, the pure colloidal AuNPs/WSC solutions synthesized by irradiation method can be potentially applied in biomedicine, cosmetics and in other fields as well.

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“…In addition, 2 Journal of Nanomaterials silver nanoparticles (AgNPs) were extensively studied and widely used for a long time due to their unique properties such as bacterial and fungal inhibition and odor removal at low concentration and safe to human and the environment. The antifungal effect of AgNPs stabilized in chitosan has been studied on pathogen fungi such as Colletotrichum [8] and Corticium salmonicolor [9]. Moreover, irradiation with -rays using a Co-60 source was considered as an effective method for the synthesis of noble metal nanoparticles [10].…”

Section: Introductionmentioning

confidence: 99%

Radiation Synthesis of Silver Nanoparticles/Chitosan for Controlling Leaf Fall Disease on Rubber Trees Causing by Corynespora cassiicola

Nhien

Luong

Tien

et al. 2018

Journal of Nanomaterials

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Silver nanoparticles (AgNPs) were successfully prepared by -rays irradiation of solution containing 1.0-10 mM of silver nitrate and 1% chitosan. The optical characteristics and particles sizes of AuNPs were determined by UV-Vis spectra and TEM images, respectively. The size of AgNPs increased by the increase of silver concentration or the decrease of chitosan molecular weight in irradiated solution. The in vitro test showed that AgNPs inhibited the growth of Corynespora cassiicola on rubber-leaf extract media with the inhibitory efficiency of 52.1-100% by treatment of AgNPs with particle size from 15 to 5 nm, respectively. In addition, antifungal activity was found to reach ∼100% by the addition of 90 ppm AgNPs. The in vivo foliar treatment of AgNPs on 9-month-old rubber plants showed that the treatment with 2.5-12.5 ppm AgNPs on tested plants after inoculation by spraying with C. cassiicola spores enhanced the rate of non-disease-infected plants from 6.0 to 93.3%, respectively, compared to the untreated control. The inhibition effect of AgNPs on fungal growth of C. cassiicola mycelial was also elucidated via SEM images. The AgNPs/chitosan synthesized by -irradiation is potentially promising to use as a fungicidal product for treating C. cassiicola, a serious pathogen fungus on rubber trees.

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Synthesis and antimicrobial effects of colloidal silver nanoparticles in chitosan byγ-irradiation

Cited by 54 publications

References 22 publications

Synthesis of Gold Nanoparticles Stabilized in Dextran Solution by Gamma Co-60 Ray Irradiation and Preparation of Gold Nanoparticles/Dextran Powder

Synthesis of Gold Nanoparticles Stabilized in Dextran Solution by Gamma Co-60 Ray Irradiation and Preparation of Gold Nanoparticles/Dextran Powder

Electron beam/ γ -ray irradiation synthesis of gold nanoparticles and investigation of antioxidant activity

Radiation Synthesis of Silver Nanoparticles/Chitosan for Controlling Leaf Fall Disease on Rubber Trees Causing by Corynespora cassiicola

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