Evaluation of the Effect of the Activity of Gum Arabic Aqueous Solution and Ozonated Water on the Chemical and Organoleptic Properties of Locally Produced Soft Cheese in Baghdad City

Thin films (2.0 nm) of copper on germanium internal reflection elements (IREs) were exposed to 10% gum arabic (aqueous solution), 2% alginic acid (aqueous solution), 1% bacterial culture supernatant (BCS, simulated seawater solution), and 0.5% Pseudomonas atlantica exopolymer (simulated seawater solution) and monitored in situ, real time, with the use of Fourier transform infrared/cylindrical internal reflection/attenuated total reflection spectroscopy as a function of time at ambient conditions. Ancillary graphite furnace atomic absorption spectroscopy was used to monitor the removal process of the copper thin film from the germanium IREs. Results indicate that some of the copper was removed from the Cu/Ge interface by all four polymers and incorporated into the polymer matrix. Thus, biocorrosion of copper was exhibited by the four polymers in the order of alginic acid < gum arabic < BCS > Pseudomonas atlantica exopolymer. The FT-IR/CIR/ATR technique can be successfully used to monitor biocorrosion systems in in situ, real-time settings.

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Contribution of arabinogalactan protein to the stabilization of single-walled carbon nanotubes in aqueous solution of gum arabic

Food Hydrocolloids ◽

10.1016/j.foodhyd.2017.08.013 ◽

2018 ◽

Vol 78 ◽

pp. 55-61 ◽

Cited By ~ 6

Author(s):

Xiaobei Li ◽

Hongbin Zhang ◽

Qiangwei Jin ◽

Zhixiang Cai

Keyword(s):

Carbon Nanotubes ◽

Aqueous Solution ◽

Gum Arabic ◽

Single Walled Carbon Nanotubes ◽

Arabinogalactan Protein ◽

Single Walled Carbon ◽

Walled Carbon Nanotubes

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Preparation of PLA and PLGA Magnetic Microspheres with T-Shaped Microchannel Reactor

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.609-610.425 ◽

2014 ◽

Vol 609-610 ◽

pp. 425-429 ◽

Cited By ~ 1

Author(s):

Peng Liu ◽

Yi Zhong ◽

Yan Luo

Keyword(s):

Aqueous Solution ◽

Solvothermal Method ◽

Gum Arabic ◽

Magnetic Microspheres ◽

Microchannel Reactor ◽

Characteristic Functional ◽

Dichloromethane Solution ◽

New Approach ◽

Ft Ir ◽

Uniform Particle Size

Monodisperse magnetic microspheres with biomaterial of polylactic acid (PLA) or poly lactic-co-glycolic acid (PLGA) as shell were successfully prepared via T-shaped microchannel reactor in this paper. Hydrophilic ferriferrous oxide (Fe3O4) with highly magnetic responsiveness was obtained by solvothermal method. Aqueous solution of Fe3O4 was then emulsified into a dichloromethane solution of PLA or PLGA to generate water-in-oil (W/O) emulsion. Different stabilizer, i.e. polyvinyl alcohol (PVA), gelatin or gum arabic, was then added into the W/O emulsion for the purpose of more stable system. Subsequently, W/O/W composite emulsion was formed by injecting W/O emulsion into PVA aqueous solution at the T-shaped joint of microchannel reactor. Magnetic microspheres were finally prepared by solvent evaporation in the microchannel. The characteristic functional groups of Fe3O4 were characterized by Fourier transform infrared spectroscopy (FT-IR). The magnetic property was measured with vibrating sample magnetometer (VSM). The morphology of all samples was observed by scanning electron microscopy (SEM). It was found that the magnetic microspheres exhibit a uniform particle size in micro-scale. Therefore, the T-shaped microchannel reactor was expected to create a new approach for fabricating magnetic microspheres.

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