A Comparative Study of the Antibacterial Activity of Rosemary Extract Blended with Polymeric Biomaterials

2016 ◽  
Vol 10 (4) ◽  
pp. 326-330
Author(s):  
SukhwinderK. Bhullar ◽  
Deepti Rana ◽  
Burcak Kaya Ozsel ◽  
Ramesh Yadav ◽  
Ginpreet Kaur ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Comparative Study ◽  
Rosemary Extract ◽  
Polymeric Biomaterials

Comparative study of chitosan/Ag nanocomposites synthesis and test their antibacterial activity on Staphylococcus aureus and Escherichia coli

2018 ◽  
Vol 54(8) ◽  
pp. 96
Author(s):  
Quyen, T.T.B. ◽  
Toan, H.T. ◽  
Tuan, N.T. ◽  
Thien, D.V.H. ◽  
Thanh, L.H.V. ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Antibacterial Activity ◽  
Comparative Study

scholarly journals Biosynthesis, characterization, and antibacterial activity of ZnO nanoaggregates using aqueous extract from Anacardium occidentale leaf: comparative study of different precursors

2021 ◽  
Vol 10 (1) ◽  
Author(s):  
Eric Kwabena Droepenu ◽  
Ebenezer Aquisman Asare ◽  
Boon Siong Wee ◽  
Rafeah Binti Wahi ◽  
Frederick Ayertey ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Antibacterial Activity ◽  
Comparative Study ◽  
Aqueous Extract ◽  
Zinc Chloride ◽  
Zinc Acetate ◽  
Zinc Acetate Dihydrate ◽  
Inhibition Zone ◽  
Anacardium Occidentale ◽  
Acetate Dihydrate

Abstract Background Various parts of Anacardium occidentale plant possess curative qualities like antidiabetic, anti-inflammatory, antibacterial, antifungal, and antioxidant. Aqueous extract of this plant leaf was used in biosynthesizing zinc oxide (ZnO) nanoaggregates using two precursors of zinc salt (zinc acetate dihydrate [Zn(CH3COO)2∙2H2O] and zinc chloride [ZnCl2]). The synthesized ZnO samples were used in a comparative study to investigate the antibacterial activity against selected Gram-positive and Gram-negative microbes [Staphylococcus aureus, Exiguobacterium aquaticum (Gram +ve) and Escherichia coli, Klebsiella pneumoniae, Acinetobacter baumannii (Gram −ve)]. The synthesized ZnO nanoaggregates from the two precursors were characterized using Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and energy-dispersive x-ray spectroscopy (EDX) techniques. Results Micrographs of SEM and TEM confirmed nanoparticles agglomerated into aggregates. While spherical nanoaggregates were identified in samples prepared from Zn(CH3COO)2∙2H2O, flake-like structures were identified in samples synthesized from ZnCl2. Particle size determined by TEM was 107.03 ± 1.54 nm and 206.58 ± 1.86 nm for zinc acetate dihydrate and zinc chloride precursors respectively. ZnO nanoaggregate synthesized using zinc acetate as precursor gave higher antibacterial activity than its counterpart, zinc chloride with K. pneumonia recording the highest inhibition zone of 2.08 ± 0.03 mm (67.53%) whereas S. aureus recorded the least inhibition zone of 1.06 ± 0.14 mm (34.75%) for ZnO nanoaggregate from zinc chloride precursor. Also, antibacterial activity increases with increasing concentration of the extract in general. However, A. baumannii, E. aquaticum, and K. pneumoniae did not follow the continuity trend with regards to the 250 ppm and 500 ppm concentrations. Conclusion Biosynthesis of ZnO nanoaggregates using aqueous extract of A. occidentale leaf from zinc acetate dihydrate and zinc chloride as precursors was successful with the formation of nanospheres and nanoflakes. The study suggested that A. occidentale sp. could be an alternative source for the production of ZnO nanoparticles and are efficient antibacterial compounds against both Gram +ve and Gram −ve microbes with its promising effect against infectious bacteria.

scholarly journals Comparative Study of Antibacterial Activity of Different Essential Oils against Different Bacteria

IJARCCE ◽  
2019 ◽  
Vol 6 (6) ◽  
pp. 9-18
Author(s):  
Sharmin Akter ◽  
Anika Bushra Moumita ◽  
Tasnia Ahmed
Keyword(s):  
Antibacterial Activity ◽  
Comparative Study ◽  
Essential Oils

Protective effect of hydroxytyrosol and rosemary extract in a comparative study of the oxidative stability of Echium oil

2019 ◽  
Vol 290 ◽  
pp. 316-323 ◽  
Author(s):  
Celia Bañares ◽  
Diana Martin ◽  
Guillermo Reglero ◽  
Carlos F. Torres
Keyword(s):  
Comparative Study ◽  
Protective Effect ◽  
Oxidative Stability ◽  
Rosemary Extract ◽  
Echium Oil
Sign in / Sign up

Export Citation Format

Share Document