Preparation and Characterization of Bacterial Cellulose/Natural Polymer Antibacterial Composites

Hits: 387
Select Volume / Issue:
Year:
2017
Type of Publication:
Article
Keywords:
Bacterial Cellulose, Chitosan, Sodium Alginate, Silver, E Coli, S Aureus
Authors:
Al-Mihyawi, RaedA.; AL-hussaini, Nazeer A.
Journal:
IJRAS
Volume:
4
Number:
1
Pages:
11-22
Month:
January
ISSN:
2348-3997
Abstract:
Bacterial cellulose (BC) produced by several strains of acetic acid bacteria has received immense consideration due to its unique structural, physic-mechanical, and biological properties. BC has served as a promising biomaterial and has been the subject of intensive research and development since last few decades. However, many of these applications have been limited by several limitations associated its physical and chemical nature such as lack of antimicrobial, magnetic, antioxidant, and conducting properties, and limited biocompatibility. These shortcomings can be overcome through the development of its composites with various materials to impart BC additional features. In current study, BC based bactericidal materials were prepared with chitosan (BC-Cs), alginate (BC-Alg), and alginate and silver nanoparticles together (BC-Alg/Ag) by added these materials in the media of cellulose. These materials were evaluated for various structural, physiological, and bactericidal properties through various techniques such as Field-emission scanning electron microscopy (FE-SEM), Fourier transform-infrared (FT-IR) spectroscopy, water holding capacity (WHC), water release rate (WRR), porosity, swelling, filtration, and antibacterial properties. FE-SEM confirmed the structural features of BC, BC-Cs, and BC-Alg and impregnation of Ag nanoparticles into the BC-Alg composite. FT-IR spectroscopy confirmed the presence of basic functional groups of Cs, Alg, and Ag in the chemical structure of BC, thus confirming the successful synthesis of BC-CS, BC-Alg, and BC-Alg/Ag composites. The WHC of BC, BC-CS, BC-Alg, and BC-Alg/Ag were found to be 125, 160, 138, 140 times their dry-weights, respectively. Porosity of BC, BC-CS, BC-Alg, and BC-Alg/Ag was found to be 58.9%, 47.8%,57.3%, 54.2%, respectively. Similarly, the swelling for BC, BC-CS, BC-Alg, and BC-Alg/Ag was found to be 64.8%, 57.6%, 62.8%, and 62.8%, respectively. Further, the filtration analysis results for BC, BC-CS, BC-Alg, and BC-Alg/Ag were found to be 23.5 ml/min, 17.75 ml/min, 21.24 ml/min, and 20.4 ml/min, respectively. The antibacterial activities of BC, BC-Cs, BC-Alg, and BC-Alg/Ag were determined through disc diffusion method and colony forming unit (CFU) method against Escherichia coli and Staphylococcus aureus. The results showed no antibacterial activity for pure BC and BC-Alg discs and powder. In contrast, BC-Cs and BC-Alg/Ag composites produced clear inhibition zones and significantly reduced the growth of E. coli and S. aureus. The modified BC produced in the current study can find its applications as antibacterial and antifungal materials in food packaging and storage, biomedical, and several other fields.
Full text: IJRAS_509_FINAL.pdf

Our Journals

IJECCE
International Journal of Electronics Communication and Computer Engineering
ISSN(Online): 2249 - 071X
ISSN (Print) : 2278 – 4209
www.ijecce.org
Submissions open
IJAIR
International Journal of Agriculture Innovations and Research ISSN(Online) : 2319 – 1473
www.ijair.org
Submissions open
IJISM
International Journal of Innovation in Science and Mathematics
ISSN : 2347 – 9051
www.ijism.org
Submissions open
IJEIR
International Journal of Engineering Innovations and Research
ISSN(Online) : 2277 – 5668
www.ijeir.org
Submissions are open.

IJAIM
International Journal of Artificial Intelligence and Mechatronics ISSN(Online) : 2320 – 5121
www.ijaim.org
Submissions open
IJRAS
International Journal of Research in Agricultural Sciences ISSN(Online) : 2348 – 3997
www.ijras.org
Submissions open

Indexed By: