Effect of Solvent on Physico-Chemical Properties and Antibacterial Activity of Chitosan Membranes

2014 ◽  
Vol 63 (14) ◽  
pp. 708-715 ◽  
Author(s):  
Elon Ishmael Cadogan ◽  
Ching-Hwa Lee ◽  
Srinivasa Rao Popuri ◽  
Hang-Yi Lin
Keyword(s):  
Antibacterial Activity ◽  
Chemical Properties ◽  
Effect Of Solvent ◽  
Physico Chemical ◽  
Chitosan Membranes

Autoclave-assisted green synthesis of silver nanoparticles using A. fumigatus mycelia extract and the evaluation of their physico-chemical properties and antibacterial activity

2018 ◽  
Vol 7 (3) ◽  
pp. 217-224 ◽  
Author(s):  
Sarah Ghanbari ◽  
Hamideh Vaghari ◽  
Zahra Sayyar ◽  
Mohammad Adibpour ◽  
Hoda Jafarizadeh-Malmiri
Keyword(s):  
Particle Size ◽  
Silver Nanoparticles ◽  
Antibacterial Activity ◽  
Chemical Properties ◽  
Heating Time ◽  
Gram Negative Bacteria ◽  
Synthesis Conditions ◽  
High Antibacterial Activity ◽  
Physico Chemical ◽  
Ft Ir

Abstract Silver nanoparticles (AgNPs) were synthesized using Aspergillus fumigatus (A. fumigatus) mycelia extract via the hydrothermal method. The main reducing and stabilizing groups and components of A. fumigatus extract, such as amine, hydroxyl, amid, protein, enzymes, and cell saccharide compounds, were identified by Fourier transform infrared (FT-IR). Central composition design was used to plan the experiments, and response surface methodology was applied to evaluate of the effects of independent variables, including the amount of the prepared extract (5–7 ml) and heating time (10–20 min) at 121°C and 1.5 bar), on the particle size of the synthesized AgNPs, as manifested in broad emission peak (λmax). More stable and spherical monodispersed AgNPs, with mean particle size, polydispersity index (PDI) value, and maximum ζ potential value of 23 nm, 0.270, and +35.3 mV, respectively, were obtained at the optimal synthesis conditions using 7 ml of A. fumigatus extract and heating time of 20 min. The synthesized AgNPs indicated high antibacterial activity against both Gram-positive and Gram-negative bacteria.

scholarly journals The Effect of Solvent Type and Roasting Processes on Physico-Chemical Properties of Tigernut (Cyperus esculentus L.) Tuber Oil

2018 ◽  
Vol 67 (7) ◽  
pp. 823-828
Author(s):  
Fahad Aljuhaimi ◽  
Kashif Ghafoor ◽  
Mehmet Musa Özcan ◽  
Otilija Miseckaite ◽  
Elfadıl E Babiker ◽  
...  
Keyword(s):  
Chemical Properties ◽  
Cyperus Esculentus ◽  
Effect Of Solvent ◽  
Physico Chemical ◽  
Solvent Type

scholarly journals Gamma radiation as a green method to enhance the dielectric behaviour, magnetization, antibacterial activity and dye removal capacity of Co–Fe LDH nanosheets

RSC Advances ◽  
2019 ◽  
Vol 9 (56) ◽  
pp. 32544-32561 ◽  
Author(s):  
Rafat M. Amin ◽  
Mohamed Taha ◽  
S. A. Abdel Moaty ◽  
Fatma I. Abo El-Ela ◽  
Hossam F. Nassar ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Gamma Radiation ◽  
Dye Removal ◽  
Chemical Properties ◽  
Dielectric Behaviour ◽  
Green Method ◽  
Removal Capacity ◽  
Physico Chemical

Nowadays, improving the physico-chemical properties of nanomaterials to enhance their performance towards various applications is urgent.

scholarly journals Dependence of Antibacterial Activity of ZnO Powders on Their Physico-chemical Properties

2019 ◽  
Vol 66 (9) ◽  
pp. 434-441
Author(s):  
Thi Minh Phuong NGUYEN ◽  
Ken HIROTA ◽  
Masaki KATO ◽  
Kazuhiko TSUKAGOSHI ◽  
Hirohisa YAMADA ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Chemical Properties ◽  
Physico Chemical ◽  
Zno Powders
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